CN213305812U - Novel high-power LED pulse current driving device - Google Patents
Novel high-power LED pulse current driving device Download PDFInfo
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- CN213305812U CN213305812U CN202022607437.5U CN202022607437U CN213305812U CN 213305812 U CN213305812 U CN 213305812U CN 202022607437 U CN202022607437 U CN 202022607437U CN 213305812 U CN213305812 U CN 213305812U
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- 238000007493 shaping process Methods 0.000 claims abstract description 26
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 9
- 239000003990 capacitor Substances 0.000 claims abstract description 7
- 239000012528 membrane Substances 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 238000005286 illumination Methods 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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Abstract
The utility model describes a novel high-power LED pulse current driving device, which mainly comprises six modules, namely a shell, a power supply part, a key part, a main control part, a pulse signal generating part, a pulse signal shaping amplifying part and a display part; the housing comprises an upper shell and a lower shell; the power supply part comprises a diode, a capacitor and an L7805 voltage stabilizing chip; the key portion includes a membrane keypad; the main control module comprises an AT89S51 singlechip; the pulse signal generating section includes a D/A converter; the pulse signal shaping amplifying part comprises a MAX4622 waveform shaping chip and a triode; the display portion includes an LCD display screen. The utility model discloses can provide pulse drive current for high-power LED, regulation pulse drive current's that can be very convenient pulse frequency and duty cycle can solve high-power LED during operation effectively and generate heat and efficiency problem, simple structure, convenient operation.
Description
Technical Field
The utility model relates to the field of electronic technology, especially, relate to a novel high-power LED pulse current drive device.
Background
The high-power LED is used as a fourth generation electric light source, is endowed with a name of a green illumination light source, has the advantages of small volume, long service life, high response speed and the like, and has wide application prospect in special working lamps such as oil fields, petrifaction, railways, urban landscape illumination, display screens, gymnasiums and the like. However, the current high-power LED adopts a constant current driving mode, which is limited by factors such as high cost, poor heat dissipation, low power and the like, so that the high-power LED cannot be widely applied to the general illumination field in a short time. The limiting factors can be improved from a driving circuit of the high-power LED, the higher the efficiency of the driving circuit is, the higher the overall electro-optic conversion efficiency of the high-power LED is, and the advantage of energy conservation is reflected; in addition, the higher the efficiency of the driving circuit, the lower the amount of heat generated and thus the higher its reliability.
SUMMERY OF THE UTILITY MODEL
The utility model provides a novel high-power LED pulse current drive device, this utility model can be through giving high-power LED power supply with pulse current to reach the purpose of optimizing the heat dissipation, raising the efficiency.
The utility model adopts the technical proposal that:
1. the utility model provides a novel high-power LED pulse current drive device which characterized in that: the driving device comprises an upper shell (1), a lower shell (2), an LCD display screen (3), a membrane keyboard (4) and a pulse current output interface (5), wherein a power supply part, a key part, a main control part, a pulse signal generating part and a pulse signal shaping amplifying part of the driving device are arranged inside the upper shell (1) and the lower shell (2), the LCD display screen (3) is embedded on the upper shell (1), the membrane keyboard (4) is tightly attached to the surface of the upper shell (1), the pulse current output interface (5) is arranged at the right lower part of the upper shell (1), the power supply part comprises a diode, a capacitor and an L7805 voltage stabilizing chip, the pulse signal generating part comprises a D/A (digital to analog) conversion chip AD9850, the pulse signal shaping amplifying part comprises a MAX4622 waveform shaping chip and a triode, wherein the output end of the power supply part, the key part and the pulse signal shaping amplifying, The display part and the pulse signal generating part are respectively connected with the AT89S51 singlechip, the pulse signal generating part is connected with the pulse signal shaping amplifying part, and the pulse signal shaping amplifying part is connected with the pulse current output interface.
2. The upper shell (1) and the lower shell (2) are made of ABS plastics and are connected together through screws.
3. The main control part adopts an AT89S51 singlechip.
4. The key part adopts a 1 x4 film keyboard, and the frequency and the duty ratio of pulse current can be adjusted through keyboard input.
5. The power supply part adopts a diode, a capacitor and an L7805 voltage stabilizing chip to form a voltage stabilizing circuit to provide the required working voltage for the device.
6. The display part adopts an LCD1602, and can display the frequency and the duty ratio of the pulse current on a screen.
7. The pulse signal generating part adopts an AD9850 digital-to-analog conversion chip and is in serial communication with the singlechip, and the singlechip converts digital signals into analog signals through the AD 9850.
8. The pulse signal shaping and amplifying part adopts a MAX4622 waveform shaping chip and a Darlington triode consisting of two triodes.
The utility model has the advantages that:
the utility model discloses a programme the singlechip and convert digital signal into analog signal through AD9850, then carry out waveform shaping and amplification to the pulse current signal of output and drive high-power LED, can adjust the frequency and the duty cycle of pulse current through the button, can also improve high-power LED constant current drive heat production too much and the problem of inefficiency effectively; meanwhile, the utility model has the advantages of low cost, light weight and portability.
Drawings
Fig. 1 is a schematic structural diagram of the device of the present invention.
Fig. 2 is a general block diagram of the system of the present invention.
The reference numbers in the drawings are: 1, mounting a shell; 2, a lower shell; 3LCD display screen; 4, a thin film key; 5 pulse current output interface.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
as shown in fig. 1, a novel high-power LED pulse current driving device is characterized in that: the driving device comprises an upper shell (1), a lower shell (2), an LCD display screen (3), a membrane keyboard (4) and a pulse current output interface (5), wherein a power supply part, a key part, a main control part, a pulse signal generating part and a pulse signal shaping amplifying part of the driving device are arranged inside the upper shell (1) and the lower shell (2), the LCD display screen (3) is embedded on the upper shell (1), the membrane keyboard (4) is tightly attached to the surface of the upper shell (1), the pulse current output interface (5) is arranged at the lower right side of the upper shell (1), and the power supply part comprises a diode, a capacitor and an L7805 voltage stabilizing chip; the key part comprises a film keyboard, and the main control module comprises an AT89S51 singlechip; the pulse signal generating part comprises a D/A converter, the pulse signal shaping amplifying part comprises a MAX4622 waveform shaping chip and a triode, the display part comprises an LCD display screen, an output end of the power circuit, a key part, a display part and the pulse signal generating part are respectively connected with an AT89S51 single chip microcomputer, the pulse signal generating part is connected with the pulse signal shaping amplifying part, and the pulse signal shaping amplifying part is connected with the pulse current output interface.
The upper shell (1) and the lower shell (2) are made of ABS plastics and are connected together through screws, and the edge of the upper shell is provided with a slightly protruding part which can play a role in protecting the LCD display screen.
The display part adopts an LCD1602 display screen (3) to be embedded on the upper shell (1), and the frequency and the duty ratio of the pulse current can be displayed on the screen.
The thin film keyboard (4) is tightly attached to the surface of the upper shell (1), the frequency and the duty ratio of the pulse current can be adjusted through keyboard input, frequency adjusting keys, duty ratio adjusting keys, a height adjusting key and a height adjusting key are arranged on the thin film keyboard from left to right, the frequency of the pulse current can be adjusted to be low and high by pressing the frequency adjusting keys and then using the height adjusting keys, and the duty ratio of the pulse current can be adjusted to be low and high by pressing the duty ratio adjusting keys and then using the height adjusting keys.
The pulse current output interface (5) is arranged at the right lower corner of the driving device and is connected with the high-power LED through a lead so as to provide driving current for the high-power LED.
As shown in fig. 2, the utility model relates to a novel high-power LED pulse current drive device's system theory of operation:
the utility model discloses use the AT89S51 singlechip to be the master control, the power supply part is the entire system power supply, and the frequency and the duty cycle of output pulse current can be adjusted to the key input, compile through carrying out the procedure to the singlechip and obtain required pulse signal. The power supply part adopts a capacitor to filter and then an L7805 voltage stabilizing chip reduces the input voltage to 5V to supply power to the single chip microcomputer. Since the single chip microcomputer generates a digital signal, the digital signal generated by the single chip microcomputer is converted into an analog signal using an AD9850 chip in the pulse waveform generating part. The analog signal generated here is the pulse current signal that we need, because need drive high-power LED, therefore need use MAX4622 chip to carry on the shaping to the pulse current signal again and use two single triodes to make up Darlington triode to amplify the pulse current.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and all modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.
Claims (8)
1. The utility model provides a novel high-power LED pulse current drive device which characterized in that: the driving device comprises an upper shell (1), a lower shell (2), an LCD display screen (3), a membrane keyboard (4) and a pulse current output interface (5), wherein a power supply part, a key part, a main control part, a pulse signal generating part and a pulse signal shaping amplifying part of the driving device are arranged inside the upper shell (1) and the lower shell (2), the LCD display screen (3) is embedded on the upper shell (1), the membrane keyboard (4) is tightly attached to the surface of the upper shell (1), the pulse current output interface (5) is arranged at the right lower part of the upper shell (1), the power supply part comprises a diode, a capacitor and an L7805 voltage stabilizing chip, the pulse signal generating part comprises a D/A (digital to analog) conversion chip AD9850, the pulse signal shaping amplifying part comprises a MAX4622 waveform shaping chip and a triode, wherein the output end of the power supply part, the key part and the pulse signal shaping amplifying, The display part and the pulse signal generating part are respectively connected with the AT89S51 singlechip, the pulse signal generating part is connected with the pulse signal shaping amplifying part, and the pulse signal shaping amplifying part is connected with the pulse current output interface.
2. The novel high-power LED pulse current driving device as claimed in claim 1, wherein: the upper shell (1) and the lower shell (2) are made of ABS plastics and are connected together through screws.
3. The novel high-power LED pulse current driving device as claimed in claim 1, wherein: the main control part adopts an AT89S51 singlechip.
4. The novel high-power LED pulse current driving device as claimed in claim 1, wherein: the key part adopts a 1 x4 film keyboard, and the frequency and the duty ratio of pulse current can be adjusted through keyboard input.
5. The novel high-power LED pulse current driving device as claimed in claim 1, wherein: the power supply part adopts a diode, a capacitor and an L7805 voltage stabilizing chip to form a voltage stabilizing circuit to provide the required working voltage for the device.
6. The novel high-power LED pulse current driving device as claimed in claim 1, wherein: the display part adopts an LCD1602, and can display the frequency and the duty ratio of the pulse current on a screen.
7. The novel high-power LED pulse current driving device as claimed in claim 1, wherein: the pulse signal generating part adopts an AD9850 digital-to-analog converter chip and is in serial communication with the singlechip, and the singlechip converts digital signals into analog signals through the AD 9850.
8. The novel high-power LED pulse current driving device as claimed in claim 1, wherein: the pulse signal shaping and amplifying part adopts a MAX4622 waveform shaping chip and a Darlington triode consisting of two triodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022607437.5U CN213305812U (en) | 2020-11-11 | 2020-11-11 | Novel high-power LED pulse current driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022607437.5U CN213305812U (en) | 2020-11-11 | 2020-11-11 | Novel high-power LED pulse current driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213305812U true CN213305812U (en) | 2021-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022607437.5U Expired - Fee Related CN213305812U (en) | 2020-11-11 | 2020-11-11 | Novel high-power LED pulse current driving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213305812U (en) |
-
2020
- 2020-11-11 CN CN202022607437.5U patent/CN213305812U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210528 |