CN201964201U - Large power intelligent LED floodlight - Google Patents
Large power intelligent LED floodlight Download PDFInfo
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- CN201964201U CN201964201U CN2011200300703U CN201120030070U CN201964201U CN 201964201 U CN201964201 U CN 201964201U CN 2011200300703 U CN2011200300703 U CN 2011200300703U CN 201120030070 U CN201120030070 U CN 201120030070U CN 201964201 U CN201964201 U CN 201964201U
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Abstract
The utility model discloses a large power intelligent LED floodlight, which comprises a PWM switch circuit, a constant current output circuit, a single chip control circuit, a current voltage sampling circuit, an LED load circuit and a filter circuit with a power input end, wherein the filter circuit with the power input end is electrically connected with the PWM switch circuit which is electrically connected with the constant current output circuit that is electrically connected with the LED load circuit and the current voltage sampling circuit, the current voltage sampling circuit is electrically connected with the single chip control circuit which s electrically connected with the PWM switch circuit, a current voltage value output by the constant current output circuit is collected and sent to the single chip control circuit by the current voltage sampling circuit, the single chip control circuit controls the PWM switch circuit, and the single chip control circuit comprises a single chip. The large power intelligent LED floodlight has low cost and stable illumination brightness.
Description
Technical field
The utility model relates to a kind of high power intelligent LED illuminating lamp.
Background technology
LED illuminating lamp on existing market if directly use battery-operatedly, needs 3 to 4 to save common batteries, then must adopt the step-down current limliting and makes efficient not high, and its volume is big too in addition; If use 1 to 2 joint common batteries, just must use the special LED driver, but special LED driver price be not low at present.
Summary of the invention
The purpose of this utility model is to provide a kind of cost low and can make the stable high power intelligent LED illuminating lamp of LED luminosity.
The utility model realizes that the technical scheme of above-mentioned purpose is, a kind of high power intelligent LED illuminating lamp, its innovative point is: comprise the PWM on-off circuit, constant current output circuit, single chip machine controlling circuit, the current/voltage sample circuit, LED load circuit and filter circuit with power input, described filter circuit with power input is electrically connected with the PWM on-off circuit, described PWM on-off circuit is electrically connected with constant current output circuit, described constant current output circuit is electrically connected with the LED load circuit, described constant current output circuit is electrically connected with the current/voltage sample circuit, described current/voltage sample circuit is electrically connected with single chip machine controlling circuit, described single chip machine controlling circuit is electrically connected with the PWM on-off circuit, described current/voltage sample circuit is gathered the current/voltage value of constant current output circuit output and the current/voltage value that collects is delivered to single chip machine controlling circuit, described single chip machine controlling circuit control PWM on-off circuit, described single chip machine controlling circuit comprises single-chip microcomputer, and described filter circuit with power input is electrically connected with the PWM on-off circuit.
Described PWM on-off circuit comprises transistor T1, T2, resistor R 2, R3, R4, diode D1, D2, D3, D4 and inductance L 1, the emitter stage of described transistor T1 is electrically connected with an end of resistor R 2, the other end of described resistor R 2 is electrically connected with the base stage of transistor T1 and is electrically connected with an end of resistor R 3, the other end of resistor R 3 is electrically connected with the P1.7 pin of single-chip microcomputer, the colelctor electrode of described transistor T1 is electrically connected with an end of inductance L 1, the other end of inductance L 1 is electrically connected with the positive pole of diode D4, one end of described inductance L 1 also is connected with the negative electricity of diode D2, the plus earth of diode D2, the other end of described inductance L 1 is electrically connected with the colelctor electrode of transistor T2, the base stage of described transistor T2 is connected with the negative electricity of diode D1, the positive pole of described diode D1 is electrically connected with the P1.6 pin of single-chip microcomputer, the negative pole of described diode D1 is electrically connected with the positive pole of diode D3, the negative pole of described diode D3 is electrically connected with the colelctor electrode of transistor T2, one end of described resistor R 4 is connected with the negative electricity of diode D1, and the other end of described resistor R 4 is electrically connected with the emitter stage of transistor T2 and ground connection.
Described constant current output circuit comprises transistor T3, T4, resistor R 5, R6, R7, R8, R9, R10, capacitor C5, C6, the base stage of described transistor T3 and resistor R 7, the end of R9 and an end of capacitor C 6 are electrically connected, the emitter stage of described transistor T3 is electrically connected with an end of resistor R 6, the other end of described resistor R 6 is electrically connected with the emitter stage of transistor T4, the base stage of described transistor T4 is electrically connected with the other end of resistor R 9 and an end of resistor R 10, the colelctor electrode of described transistor T4 is electrically connected with an end of resistor R 10, the other end of described resistor R 10 is electrically connected with the other end of resistor R 8, one end of resistor R 8 is electrically connected with the other end of capacitor C6 and is electrically connected with the colelctor electrode of transistor T3, one end of described resistor R 5 is electrically connected with the colelctor electrode of transistor T3, the other end of resistor R 5 is electrically connected with an end of capacitor C 5, and the other end of described capacitor C5 is electrically connected with the other end of resistor R 8.
Described current/voltage sample circuit comprises voltage sampling part and current sampling part, described voltage sampling partly comprises operational amplifier OPA1, Zener diode D5 and resistor R 11, R12, R13, R14, the negative input end of described operational amplifier OPA1 is electrically connected with an end of resistor R 11 and is electrically connected with the positive pole of Zener diode D5, the positive input terminal of described operational amplifier OPA1 is electrically connected with the end of resistor R 12 and R13, the other end of described resistor R 13 is electrically connected with the other end of resistor R 14, one end ground connection of described resistor R 14, the other end of described resistor R 13 is electrically connected with the P1.0 pin of single-chip microcomputer, the output of described operational amplifier OPA1 is electrically connected with the P3.3 pin of single-chip microcomputer, and described current sampling value is connected to the P1.1 pin of single-chip microcomputer by the other end of resistor R 5.
The utility model adopts Single-chip Controlling high-power LED illuminating lamp, can be used for general lighting, traffic signals demonstration etc., adopts the 9-36V DC-voltage supply, maximum output current 1A, power output 10W.Have output voltage stabilization, current ripples is low, the characteristics that display brightness is stable, and the single-chip microcomputer of employing is cheap and have intellectuality, so the utility model cost is low and prodigiosin makes the LED luminosity stable.
Description of drawings
Fig. 1 is a structured flowchart of the present utility model;
Fig. 2 is a circuit diagram of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is done and to be described in further detail.
As Fig. 1, shown in 2, a kind of high power intelligent LED illuminating lamp, comprise PWM on-off circuit 1, constant current output circuit 2, single chip machine controlling circuit 3, current/voltage sample circuit 4, LED load circuit 5 and filter circuit 6 with power input, described filter circuit 6 with power input is electrically connected with PWM on-off circuit 1, described PWM on-off circuit 1 is electrically connected with constant current output circuit 2, described constant current output circuit 2 is electrically connected with LED load circuit 5, described constant current output circuit 2 is electrically connected with current/voltage sample circuit 4, described current/voltage sample circuit 4 is electrically connected with single chip machine controlling circuit 3, described single chip machine controlling circuit 3 is electrically connected with PWM on-off circuit 1, described current/voltage sample circuit 4 is gathered the current/voltage value of constant current output circuit 2 outputs and the current/voltage value that collects is delivered to single chip machine controlling circuit 3, described single chip machine controlling circuit 3 control PWM on-off circuits 1, described single chip machine controlling circuit 3 comprises single-chip microcomputer U1, and described filter circuit 6 with power input is electrically connected with PWM on-off circuit 1.
Described PWM on-off circuit 1 comprises transistor T1, T2, resistor R 2, R3, R4, diode D1, D2, D3, D4 and inductance L 1, the emitter stage of described transistor T1 is electrically connected with an end of resistor R 2, the other end of described resistor R 2 is electrically connected with the base stage of transistor T1 and is electrically connected with an end of resistor R 3, the other end of resistor R 3 is electrically connected with the P1.7 pin of single-chip microcomputer U1, the colelctor electrode of described transistor T1 is electrically connected with an end of inductance L 1, the other end of inductance L 1 is electrically connected with the positive pole of diode D4, one end of described inductance L 1 also is connected with the negative electricity of diode D2, the plus earth of diode D2, the other end of described inductance L 1 is electrically connected with the colelctor electrode of transistor T2, the base stage of described transistor T2 is connected with the negative electricity of diode D1, the positive pole of described diode D1 is electrically connected with the P1.6 pin of single-chip microcomputer U1, the negative pole of described diode D1 is electrically connected with the positive pole of diode D3, the negative pole of described diode D3 is electrically connected with the colelctor electrode of transistor T2, one end of described resistor R 4 is connected with the negative electricity of diode D1, and the other end of described resistor R 4 is electrically connected with the emitter stage of transistor T2 and ground connection.
Described constant current output circuit 2 comprises transistor T3, T4, resistor R 5, R6, R7, R8, R9, R10 and capacitor C5, C6, the base stage of described transistor T3 and resistor R 7, the end of R9 and an end of capacitor C 6 are electrically connected, the emitter stage of described transistor T3 is electrically connected with an end of resistor R 6, the other end of described resistor R 6 is electrically connected with the emitter stage of transistor T4, the base stage of described transistor T4 is electrically connected with the other end of resistor R 9 and an end of resistor R 10, the colelctor electrode of described transistor T4 is electrically connected with an end of resistor R 10, the other end of described resistor R 10 is electrically connected with the other end of resistor R 8, one end of resistor R 8 is electrically connected with the other end of capacitor C6 and is electrically connected with the colelctor electrode of transistor T3, one end of described resistor R 5 is electrically connected with the colelctor electrode of transistor T3, the other end of resistor R 5 is electrically connected with an end of capacitor C 5, and the other end of described capacitor C5 is electrically connected with the other end of resistor R 8.
Described current/voltage sample circuit 4 comprises voltage sampling part and current sampling part, described voltage sampling partly comprises operational amplifier OPA1, Zener diode D5 and resistor R 11, R12, R13, R14, the negative input end of described operational amplifier OPA1 is electrically connected with an end of resistor R 11 and is electrically connected with the positive pole of Zener diode D5, the positive input terminal of described operational amplifier OPA1 is electrically connected with the end of resistor R 12 and R13, the other end of described resistor R 13 is electrically connected with the other end of resistor R 14, one end ground connection of described resistor R 14, the other end of described resistor R 13 is electrically connected with the P1.0 pin of single-chip microcomputer U1, the output of described operational amplifier OPA1 is electrically connected with the P3.3 pin of single-chip microcomputer U1, and described current sampling value is connected to the P1.1 pin of single-chip microcomputer U1 by the other end of resistor R 5.The sampling value of output voltage is connected to the P1.3 pin of single-chip microcomputer U1 by operational amplifier OPA1 output.
High power intelligent LED illuminating lamp of the present utility model is by DC power supply, and its operation principle is as follows:
Dc source is via the filter circuit 6 with power input, be added to constant current output circuit 2 by PWM on-off circuit 1 again, produce a LED LED load in the low ripple current driving LED load circuit 5,4 pairs of output current magnitude of voltage samplings of current/voltage sample circuit also are transmitted back to single chip machine controlling circuit 3, single-chip microcomputer U1 changes the pulse duty factor of PWM on-off circuit 1 according to sampling value, realize the PWM modulation, regulated output voltage, reduce output current ripple, thereby make the LED luminosity stable.
Among Fig. 2:
Frame of broken lines 6 is input circuits, and port BATT1 and GND are connected the positive pole and the negative pole of dc source respectively, and electrolytic capacitor C1 is an input filter capacitor.
Frame of broken lines 7 is small-signal power circuits, electrolytic capacitor C8, and C10, capacitor C9, C11 forms electric source filter circuit, and three terminal regulator U2 reduces input DC power and output 5V direct-flow steady voltage, and single-chip microcomputer and operational amplifier power supply are provided.
Frame of broken lines 3 is single-chip minimum system circuit, electrolytic capacitor C4, and resistor R 1 is formed reset circuit of SCM; Crystal TX and capacitor C1, C2 forms oscillating circuit, and the single-chip microcomputer operating frequency is provided; Single-chip microcomputer U1 is the design's a control core, by predetermined waveform parameter in the program, compare with the current/voltage of the outer samples circuit that on P1.1, P3.4 pin, reads, producing the PWM modulating pulse exports on P1.6, P1.7 pin, realization makes output voltage stabilization in design load to the control of outside PWM switch.
Frame of broken lines 1 is the PWM on-off circuit, transistor T1, resistor R 2, R3 and transistor T2, diode D1, D3, resistor R 4 is formed 2 on-off circuits, T1 respectively, the base stage of T2 is respectively by single-chip microcomputer P1.6, the control of P1.7 pin, when single-chip microcomputer P1.6, P1.7 output pulse signal, T1, T2 will be operated in conducting and cut-off state thereupon.Work as T1, during the T2 conducting, inductance L 1 storage power is worked as T1, and when T2 ended, inductance L 1 was passed through diode D2, D4, and resistor R 6 is to load circuit output electric energy.Change the pulse duty factor of pwm signal, the output electric energy also will change, and make the luminosity of LED load controlled.
Frame of broken lines 5 is LED load circuits, according to using needs, can connect 3-8 great power LED light emitting diode.
Claims (4)
1. high power intelligent LED illuminating lamp, it is characterized in that: comprise PWM on-off circuit (1), constant current output circuit (2), single chip machine controlling circuit (3), current/voltage sample circuit (4), LED load circuit (5) and have the filter circuit (6) of power input, described filter circuit (6) with power input is electrically connected with PWM on-off circuit (1), described PWM on-off circuit (1) is electrically connected with constant current output circuit (2), described constant current output circuit (2) is electrically connected with LED load circuit (5), described constant current output circuit (2) is electrically connected with current/voltage sample circuit (4), described current/voltage sample circuit (4) is electrically connected with single chip machine controlling circuit (3), described single chip machine controlling circuit (3) is electrically connected with PWM on-off circuit (1), described current/voltage sample circuit (4) is gathered the current/voltage value of constant current output circuit (2) output and the current/voltage value that collects is delivered to single chip machine controlling circuit (3), described single chip machine controlling circuit (3) control PWM on-off circuit (1), described single chip machine controlling circuit (3) comprises single-chip microcomputer (U1).
2. high power intelligent LED illuminating lamp according to claim 1, it is characterized in that: described PWM on-off circuit (1) comprises transistor T1, T2, resistor R 2, R3, R4, diode D1, D2, D3, D4 and inductance L 1, the emitter stage of described transistor T1 is electrically connected with an end of resistor R 2, the other end of described resistor R 2 is electrically connected and is electrically connected with an end of resistor R 3 with the base stage of crystal 33 utmost point pipe T1, the other end of resistor R 3 is electrically connected with the P1.7 pin of single-chip microcomputer (U1), the colelctor electrode of described transistor T1 is electrically connected with an end of inductance L 1, the other end of inductance L 1 is electrically connected with the positive pole of diode D4, one end of described inductance L 1 also is connected with the negative electricity of diode D2, the plus earth of diode D2, the other end of described inductance L 1 is electrically connected with the colelctor electrode of transistor T2, the base stage of described transistor T2 is connected with the negative electricity of diode D1, the positive pole of described diode D1 is electrically connected with the P1.6 pin of single-chip microcomputer (U1), the negative pole of described diode D1 is electrically connected with the positive pole of diode D3, the negative pole of described diode D3 is electrically connected with the colelctor electrode of transistor T2, one end of described resistor R 4 is connected with the negative electricity of diode D1, and the other end of described resistor R 4 is electrically connected with the emitter stage of transistor T2 and ground connection.
3. high power intelligent LED illuminating lamp according to claim 1, it is characterized in that: described constant current output circuit (2) comprises transistor T3, T4, resistor R 5, R6, R7, R8, R9, R10 and capacitor C5, C6, the base stage of described transistor T3 and resistor R 7, the end of R9 and an end of capacitor C 6 are electrically connected, the emitter stage of described transistor T3 is electrically connected with an end of resistor R 6, the other end of described resistor R 6 is electrically connected with the emitter stage of transistor T4, the base stage of described transistor T4 is electrically connected with the other end of resistor R 9 and an end of resistor R 10, the colelctor electrode of described transistor T4 is electrically connected with an end of resistor R 10, the other end of described resistor R 10 is electrically connected with the other end of resistor R 8, one end of resistor R 8 is electrically connected with the other end of capacitor C6 and is electrically connected with the colelctor electrode of transistor T3, one end of described resistor R 5 is electrically connected with the colelctor electrode of transistor T3, the other end of resistor R 5 is electrically connected with an end of capacitor C 5, and the other end of described capacitor C5 is electrically connected with the other end of resistor R 8.
4. high power intelligent LED illuminating lamp according to claim 1, it is characterized in that: described current/voltage sample circuit (4) comprises voltage sampling part and current sampling part, described voltage sampling partly comprises operational amplifier OPA1, Zener diode D5 and resistor R 11, R12, R13, R14, the negative input end of described operational amplifier OPA1 is electrically connected with an end of resistor R 11 and is electrically connected with the positive pole of Zener diode D5, the positive input terminal of described operational amplifier OPA1 is electrically connected with the end of resistor R 12 and R13, the other end of described resistor R 13 is electrically connected with the other end of resistor R 14, one end ground connection of described resistor R 14, the other end of described resistor R 13 is electrically connected with the P1.0 pin of single-chip microcomputer (U1), the output of described operational amplifier OPA1 is electrically connected with the P3.3 pin of single-chip microcomputer (U1), and described current sampling value is connected to the P1.1 pin of single-chip microcomputer (U1) by the other end of resistor R 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200300703U CN201964201U (en) | 2011-01-28 | 2011-01-28 | Large power intelligent LED floodlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200300703U CN201964201U (en) | 2011-01-28 | 2011-01-28 | Large power intelligent LED floodlight |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201964201U true CN201964201U (en) | 2011-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200300703U Expired - Fee Related CN201964201U (en) | 2011-01-28 | 2011-01-28 | Large power intelligent LED floodlight |
Country Status (1)
| Country | Link |
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| CN (1) | CN201964201U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105636301A (en) * | 2014-10-31 | 2016-06-01 | 天津津航技术物理研究所 | Large-current switching amplification circuit employing PWM control |
| CN109121268A (en) * | 2018-08-21 | 2019-01-01 | 江苏优为视界科技有限公司 | A kind of high efficiency intelligent fluorescent lamp control system |
-
2011
- 2011-01-28 CN CN2011200300703U patent/CN201964201U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105636301A (en) * | 2014-10-31 | 2016-06-01 | 天津津航技术物理研究所 | Large-current switching amplification circuit employing PWM control |
| CN109121268A (en) * | 2018-08-21 | 2019-01-01 | 江苏优为视界科技有限公司 | A kind of high efficiency intelligent fluorescent lamp control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110907 Termination date: 20140128 |