CN209299564U - A kind of driving unit and a kind of LED street lamp - Google Patents
A kind of driving unit and a kind of LED street lamp Download PDFInfo
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- CN209299564U CN209299564U CN201821557927.5U CN201821557927U CN209299564U CN 209299564 U CN209299564 U CN 209299564U CN 201821557927 U CN201821557927 U CN 201821557927U CN 209299564 U CN209299564 U CN 209299564U
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- 239000003990 capacitor Substances 0.000 claims description 33
- 238000001514 detection method Methods 0.000 claims description 11
- 238000004146 energy storage Methods 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
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Abstract
The utility model relates to circuit fields, more particularly to a kind of driving unit and a kind of LED street lamp, the driving unit includes input terminal and multiple output ends, the input terminal is equipped with the single power supply for input direct-current signal, the multiple MOS modules of power sources in parallel, the MOS module are connected with corresponding output end respectively；Wherein, for the power input direct current signal to multiple MOS modules, direct current signal is converted to pwm signal according to duty ratio by the MOS module, and passes through output end output pwm signal.It is correspondingly arranged MOS module and output end, by the duty ratio output pwm signal of MOS module, to realize drive control.
Description
Technical Field
The utility model relates to a circuit field, concretely relates to drive unit and LED street lamp.
Background
In the existing LED street lamp, a dedicated power supply is often required to be configured, and the power supply is only provided with one output, and only can drive the LED street lamp to light but cannot adjust the color temperature. For example, the power supply can be switched off in the daytime to turn off the LED street lamp, and switched on at night to turn on the LED street lamp; however, the power supply cannot adjust the color temperature of the LED street lamp to be low in cloudy days and to be high in sunny days.
And when the LED street lamp is provided with a plurality of, must be equipped with a plurality of corresponding power, if need drive the LED street lamp simultaneously, then all powers need be put through simultaneously, realize control to the LED street lamp. Therefore, if a plurality of LED street lamps need to be driven, a plurality of power supplies need to be arranged, so that the cost is increased, in addition, the management of different output powers of the plurality of power supplies is complex, the LED street lamps have large volumes, the installation is inconvenient, the intelligent degree is not enough, and the large-area popularization and use cannot be realized.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, provide a drive unit and a LED street lamp, solve a plurality of LED street lamps and need a plurality of power drive's problem.
In order to solve the technical problem, the utility model provides a driving unit, the driving unit includes an input end and a plurality of output ends, the input end is provided with a single power supply for inputting direct current signals, the power supply is connected with a plurality of MOS modules in parallel, the MOS modules are respectively connected with the corresponding output ends; the power supply inputs direct current signals to the MOS modules, the MOS modules convert the direct current signals into PWM signals according to duty ratios, and the PWM signals are output through output ends.
Wherein, the preferred scheme is: the driving unit further comprises an energy storage module, wherein the energy storage module comprises a capacitor C1, and the capacitor C1 is connected with a power supply in parallel.
Wherein, the preferred scheme is: the driving unit further comprises a boosting module, the boosting module comprises an inductor L1, a diode D1, an MOS transistor Q1 and a capacitor C2, one end of the inductor is connected with the capacitor C1, the other end of the inductor is connected with the drain electrode of the MOS transistor Q1 and the anode of the diode D1 respectively, the cathode of the diode D1 is connected with the capacitor C2, and the capacitor C2 is further connected with the MOS module in parallel.
Wherein, the preferred scheme is: the driving unit further comprises an anti-reverse connection module, the anti-reverse connection module comprises an MOS tube Q2, the drain electrode of the MOS tube Q2 is respectively connected with a power supply, a grounding end and the MOS module, and the source electrode of the MOS tube Q2 is connected with the source electrode of the MOS tube Q1.
Wherein, the preferred scheme is: the driving unit further comprises a resistor R1, one end of the resistor R1 is connected with the capacitor C2, and the other end of the resistor R1 is connected with the MOS module respectively.
Wherein, the preferred scheme is: the driving unit further comprises a current detection module arranged at two ends of the resistor R1.
Wherein, the preferred scheme is: the MOS module is connected with a first protection diode in parallel.
Wherein, the preferred scheme is: and the MOS tube Q1 and the MOS tube Q2 are both connected with a second protection diode in parallel.
The utility model also provides a LED street lamp, the LED street lamp includes LED, main control unit, environment detecting element and the drive unit as above, the main control unit is connected with environment detecting element and drive unit respectively, the output of drive unit connects LED; the environment detection unit detects a brightness signal of an external environment and sends the brightness signal to the main control unit, the main control unit controls the driving unit to send a driving signal to the LED according to the brightness signal, and the LED sends an optical signal according to the driving signal.
Wherein, the preferred scheme is: the LED street lamp further comprises an indicator light, the indicator light is connected with the LED, the LED emits light signals, and the indicator light is turned on.
The utility model has the advantages that compared with the prior art, the utility model designs a driving unit and a LED street lamp, correspondingly sets a MOS module and an output end, outputs PWM signals through the duty ratio of the MOS module, thereby realizing the driving control; the driving unit is arranged in the LED street lamp, so that the power and the brightness of a plurality of LEDs can be simultaneously controlled by a single power supply under the condition of unchanging the total power, a plurality of power supplies are not needed, the cost is reduced, and the volume is reduced.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a schematic view of a drive unit of the present invention;
fig. 2 is a circuit diagram of the driving unit of the present invention;
fig. 3 is a schematic view of the LED street lamp of the present invention;
fig. 4 is a circuit diagram of the LED street lamp of the present invention.
Detailed Description
The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, the present invention provides a preferred embodiment of a drive unit.
Specifically, referring to fig. 1, the driving unit includes an input end and a plurality of output ends, the input end is provided with a single power supply 10 for inputting a dc signal, the power supply 10 may be an ac-to-dc power supply or a dc-to-dc power supply, after conversion, the power supply 10 only outputs a dc signal, the power supply 10 is connected in parallel with a plurality of MOS modules, the MOS modules are MOS transistors, such as the MOS transistor Q3 and the MOS transistor Q4 of fig. 2, of course, the MOS modules may be provided in a plurality, not just as two as shown in fig. 2, and the MOS modules are respectively connected with the corresponding output ends. The power supply 10 inputs a dc signal to the plurality of MOS modules at an input terminal, the MOS modules convert the dc signal into a PWM signal according to a duty ratio, and output the PWM signal through an output terminal, and the PWM signal can realize external drive control. Referring to fig. 1, the power supply 10 is respectively connected to the MOS module 21 and the MOS module 22, so that an electrical signal is input through the single power supply 10, and output of the electrical signal is realized through different duty ratios of the MOS module 21 and the MOS module 22. The MOS modules are respectively connected in parallel with a first protection diode, for example, a diode is connected in parallel with a MOS transistor Q3 of fig. 2, a diode is connected in parallel with a MOS transistor Q4, and the first protection diode provides a protection effect for each MOS module.
Further, referring to fig. 2, the driving unit further includes an energy storage module, the energy storage module includes a capacitor C1, the capacitor C1 is connected in parallel with the power supply 10 and all MOS modules, the power supply 10 sends the electrical signal to the capacitor C1 for storage, and the capacitor C1 releases the stored electrical signal to each MOS module, such as the MOS transistor Q3 and the MOS transistor Q4 in fig. 2.
Still further, referring to fig. 2, the driving unit further includes a boost module, where the boost module is a boost circuit, the boost module includes an inductor L1, a diode D1, a MOS transistor Q1, and a capacitor C2, the MOS transistor Q1 implements a switch, one end of the inductor is connected to the capacitor C1 and the power supply 10, the other end of the inductor is connected to the drain of the MOS transistor Q1 and the anode of the diode D1, the cathode of the diode D1 is connected to the capacitor C2 and each MOS module, for example, the MOS transistor Q3 and the MOS transistor Q4 in fig. 2, the capacitor C2 is further connected in parallel to each MOS module, and one end of the power supply 10, one end of the capacitor C1, and the source of the MOS transistor Q1 are connected. During charging, the MOS transistor Q1 is turned on, the input voltage of the power supply 10 flows through the inductor L1, if the capacitor C1 discharges an electric signal, the input voltage is provided by the capacitor C1, the diode D1 prevents the capacitor C2 from discharging to ground, the current in the inductor L1 linearly increases at a certain rate according to the size of the inductor L1 due to the dc signal input by the power supply 10, and the inductor L1 stores energy as the current in the inductor L1 increases. During the discharging process, the MOS transistor Q1 is turned off, and due to the current holding characteristic of the inductor L1, the current flowing through the inductor L1 does not immediately become 0, but slowly changes from the value at the time of charging to 0, and the original circuit is already turned off, so that the inductor L1 can only discharge through a new circuit, that is, the inductor L1 starts to charge the capacitor C2, the voltage across the capacitor C2 rises, and at this time, the voltage is already higher than the input voltage, and the voltage boosting is completed. If the turn-on and turn-off of the MOS transistor Q1 are repeated, a voltage higher than the input voltage is obtained across the capacitor C2. The upgrade module can reduce the impedance of a loop when the MOS transistor Q1 is conducted as much as possible, so that electric energy is converted into magnetic energy as much as possible, reduce the impedance of a load loop as much as possible, so that the magnetic energy is converted into the electric energy as much as possible, and simultaneously the loss of the loop is the lowest, and reduce the consumption of a control circuit as much as possible, because the consumption of the control circuit belongs to wasted energy in the conversion process, and must be avoided as much as possible. The MOS transistor Q1 is connected in parallel with a second protection diode, and the second protection diode provides protection for the MOS transistor Q1.
Further, referring to fig. 2, the driving unit further includes an anti-reverse connection module, the anti-reverse connection module includes a MOS transistor Q2, a drain of the MOS transistor Q2 is connected to the power supply 10, the ground terminal, the capacitor C1, the capacitor C2 and the MOS module, respectively, and a source of the MOS transistor Q2 is connected to a source of the MOS transistor Q1. The MOS transistor Q2 can prevent the reverse connection of the positive electrode and the negative electrode when the power supply 10 is input. The MOS tubes Q2 are all connected in parallel with second protection diodes, and the second protection diodes provide protection for the MOS tubes Q2.
Specifically, referring to fig. 2, the driving unit further includes a resistor R1, one end of the resistor R1 is connected to the capacitor C1, the capacitor C2, the drain of the MOS transistor Q2 and the power supply 10, and the other end is connected to each MOS module, for example, the MOS transistor Q3 and the MOS transistor Q4 in fig. 2. The driving unit further comprises a current detection module arranged at two ends of the resistor R1, and the current detection module can detect the magnitude of current flowing through the resistor R1.
As shown in fig. 3 and 4, the present invention further provides a preferred embodiment of the LED street lamp.
Specifically, referring to fig. 3 and 4, an LED street lamp includes an LED, a main control unit 40, an environment detection unit 50, and the driving unit as described above; the main control unit 40 is respectively connected to the environment detection unit 50 and the driving unit, the output end of the driving unit is connected to LEDs, the number of the LEDs is the same as that of the MOS modules, and the LEDs and the MOS modules are respectively and correspondingly arranged, in detail, the main control unit 40 is connected to the power supply 10, the power supply 10 is connected to each MOS module, the MOS modules are respectively connected to corresponding LEDs, for example, the power supply 10 in fig. 3 is connected to the MOS module 21, the MOS module 21 is connected to the LED31, the power supply 10 is connected to the MOS module 22, and the MOS module 22 is connected to the LED 32; the environment detection unit 50 detects a brightness signal of the external environment 100 and sends the brightness signal to the main control unit 40, the main control unit 40 controls the driving unit to send a driving signal to the LED according to the brightness signal, and the LED sends an optical signal according to the driving signal. The driving module is only provided with a single power supply 10, but can realize synchronous brightness adjustment and color temperature adjustment of a plurality of LEDs at the same time, and all the LEDs can simultaneously adjust the brightness or the color temperature under the driving of the power supply 10. It should be noted that, if the types of the plurality of LEDs are the same, the adjusted brightness or color temperature may be the same or different, and if the types of the plurality of LEDs are different, the adjusted brightness or color temperature may be the same or different, and both need to be determined according to the duty ratio of the MOS module corresponding to the LED.
The driving signal is a PWM signal, the PWM signal controls the duty ratio of the MOS module to achieve different brightness, and multi-stage adjustment of the color temperature of the LED is achieved. Therefore, the MOS module and the output end are correspondingly arranged, and the PWM signal is output through the duty ratio of the MOS module, so that the drive control is realized; the driving unit is arranged in the LED street lamp, so that the power and the brightness of a plurality of LEDs can be simultaneously controlled by a single power supply 10 under the condition that the total power is not changed, a plurality of power supplies 10 are not needed, the cost is reduced, and the size is reduced.
Further, referring to fig. 4, the LED street lamp further includes indicator lights, the number of the indicator lights is the same as the number of the LEDs, the indicator lights are respectively connected to the corresponding LEDs, the LEDs emit light signals to indicate that the driving unit is in the operating state, and the indicator lights corresponding to the LEDs are turned on.
In summary, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A drive unit characterized by: the driving unit comprises an input end and a plurality of output ends, the input end is provided with a single power supply for inputting direct current signals, the power supply is connected with a plurality of MOS modules in parallel, and the MOS modules are respectively connected with the corresponding output ends; wherein,
the power supply inputs direct current signals to the MOS modules, and the MOS modules convert the direct current signals into PWM signals according to duty ratios and output the PWM signals through output ends.
2. The drive unit of claim 1, wherein: the driving unit further comprises an energy storage module, wherein the energy storage module comprises a capacitor C1, and the capacitor C1 is connected with a power supply in parallel.
3. The drive unit of claim 2, wherein: the driving unit further comprises a boosting module, the boosting module comprises an inductor L1, a diode D1, an MOS transistor Q1 and a capacitor C2, one end of the inductor is connected with the capacitor C1, the other end of the inductor is connected with the drain electrode of the MOS transistor Q1 and the anode of the diode D1 respectively, the cathode of the diode D1 is connected with the capacitor C2, and the capacitor C2 is further connected with the MOS module in parallel.
4. The drive unit of claim 3, wherein: the driving unit further comprises an anti-reverse connection module, the anti-reverse connection module comprises an MOS tube Q2, the drain electrode of the MOS tube Q2 is respectively connected with a power supply, a grounding end and the MOS module, and the source electrode of the MOS tube Q2 is connected with the source electrode of the MOS tube Q1.
5. The drive unit of claim 4, wherein: the driving unit further comprises a resistor R1, one end of the resistor R1 is connected with the capacitor C2, and the other end of the resistor R1 is connected with the MOS module respectively.
6. The drive unit of claim 5, wherein: the driving unit further comprises a current detection module arranged at two ends of the resistor R1.
7. The drive unit of claim 4, wherein: the MOS module is connected with a first protection diode in parallel.
8. The drive unit of claim 7, wherein: and the MOS tube Q1 and the MOS tube Q2 are both connected with a second protection diode in parallel.
9. An LED street lamp, its characterized in that: the LED street lamp comprises an LED, a main control unit, an environment detection unit and the driving unit as claimed in any one of claims 1 to 8, wherein the main control unit is respectively connected with the environment detection unit and the driving unit, and the output end of the driving unit is connected with the LED; wherein,
the environment detection unit detects a brightness signal of an external environment and sends the brightness signal to the main control unit, the main control unit controls the driving unit to send a driving signal to the LED according to the brightness signal, and the LED sends an optical signal according to the driving signal.
10. The LED street lamp according to claim 9, characterized in that: the LED street lamp further comprises an indicator light, the indicator light is connected with the LED, the LED emits light signals, and the indicator light is turned on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821557927.5U CN209299564U (en) | 2018-09-21 | 2018-09-21 | A kind of driving unit and a kind of LED street lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821557927.5U CN209299564U (en) | 2018-09-21 | 2018-09-21 | A kind of driving unit and a kind of LED street lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209299564U true CN209299564U (en) | 2019-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821557927.5U Active CN209299564U (en) | 2018-09-21 | 2018-09-21 | A kind of driving unit and a kind of LED street lamp |
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| Country | Link |
|---|---|
| CN (1) | CN209299564U (en) |
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- 2018-09-21 CN CN201821557927.5U patent/CN209299564U/en active Active
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Address after: 518000 Guangdong, Shenzhen, Baoan District, Baoan District City, the third floor of the community of 13A, Wutong Industrial Park, 4 layers and 5 stories. Patentee after: Shenzhen Shuorixin Energy Technology Co.,Ltd. Address before: 3-5F, Building 13A, Taihua wutong Industrial Park, Gushu Development Zone, Hangcheng Street, Bao'an District, Shenzhen, Guangdong 518000 Patentee before: SHENZHEN SHUORI NEW ENERGY TECHNOLOGY Co.,Ltd. |