CN207557936U - USB in LED light adjusting circuits turns single wire communication circuit - Google Patents
USB in LED light adjusting circuits turns single wire communication circuit Download PDFInfo
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- CN207557936U CN207557936U CN201721870356.6U CN201721870356U CN207557936U CN 207557936 U CN207557936 U CN 207557936U CN 201721870356 U CN201721870356 U CN 201721870356U CN 207557936 U CN207557936 U CN 207557936U
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- Prior art keywords
- oxide
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- dim
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses the USB in LED light adjusting circuits to turn single wire communication circuit, turn serial port chip including DIM signal ends, the USB in LED light adjusting circuits, the power management chip and USB interface of relevant voltage are provided to circuit, turn to be connected between serial port chip and DIM signal ends DIM in USB and be managed by multiple mos and peripheral circuit is realized according to the difference of signal sending end be used as USB ends and be received and the switching circuit of transmission.The DIM signals that usb signal is sent in LED light modulations are made USB as signal sending end by the utility model, DIM signals in LED light modulations simultaneously can also be sent to USB, USB is as signal receiving end at this time, it is connect so as to fulfill USB with the single-wire communication at DIM ends, it can be realized as the multiple analog dim signal on computer being sent to DIM ends, so as to fulfill the effect tested automatically, the testing efficiency of LED is finally improved.
Description
Technical field
The utility model is related to a kind of communicating circuit, the USB in particularly a kind of LED light adjusting circuits turns single line communication electricity
Road.
Background technology
By the way that DIM signal ends are inputted a pwm signal in LED light adjusting circuits, the letter is then obtained by the DIM on controller
Number the final control LED light of variation light modulation effect, but the dim signal of current LED light adjusting circuits is single, once light modulation model
It encloses determining, can only change in the range of this, if during the experiment, needing to select the signal of different dimming scopes, to multigroup
When LED carries out light modulation detection, it is necessary to by the way that corresponding light modulation pwm signal is connected on corresponding DIM signal ends manually, in addition
In test process is dimmed, think that some dimming scope is most suitable for, and this dimming scope size is wanted to be applied to another
During group LED light, it is also desirable to connection manually increases difficulty of test instead in this way, and USB interface is a universal serial bus,
It is to connect computer system and a kind of serial bus standard and a kind of technical specification of input/output interface of external equipment,
It is widely used in the information communications product such as PC and mobile equipment, he can simulate different for computer
Dim signal, therefore how by the DIM ports that are sent to the analog signal on computer by USB in LED light adjusting circuits, make
It obtains USB to send as individual event, the different of control LED light light modulation select or DIM signals are sent to USB, make USB as single
Item receives, and turns single line communication connection between the final DIM signals and USB realized in LED light adjusting circuits, finally facilitates user's
The problem of test, is particularly important.
Utility model content
The purpose of this utility model is to provide a kind of to be sent to usb signal to solve above-mentioned the deficiencies in the prior art
DIM signals in LED light modulations, at this point, the DIM signals during USB is dimmed as signal sending end, while LED can be also sent to
USB, at this time USB connect as signal receiving end so as to fulfill USB with the single-wire communication at DIM ends, it will be able to realize computer
On multiple analog dim signal be sent to DIM ends, so as to fulfill the effect tested automatically, in addition the signal at DIM ends is sent to
USB is sent to other next group of equipment, in the LED light adjusting circuits for the testing efficiency for finally improving LED by USB by computer
USB turn single wire communication circuit.
To achieve these goals, the USB in the LED light adjusting circuits designed by the utility model turns single wire communication circuit,
Turn serial port chip U1 including DIM signal ends DIM, USB in LED light adjusting circuits, the power management of relevant voltage is provided to circuit
Chip U3 and USB interface P1 turns to be connected with switching circuit, the switching between serial port chip U1 and DIM signal end DIM in USB
Circuit includes the first PNP triode Q1, the second metal-oxide-semiconductor Q2, third metal-oxide-semiconductor Q3, the 4th metal-oxide-semiconductor Q4, the 5th metal-oxide-semiconductor Q5 and the 6th
Metal-oxide-semiconductor Q6,
Wherein：The emitter E of the first PNP triode Q1 connects the supply voltage of+10V, institute by second resistance
It states and is connected with the first voltage-stabiliser tube Z1, the first PNP triode Q1 between the base stage B and its emitter of the first PNP triode Q1
Collector C pass through the 4th diode D4 connection DIM signal ends DIM；
DIM signal ends DIM also passes through the grid G of the 5th resistance R5 connection third metal-oxide-semiconductors Q3, the source S of third metal-oxide-semiconductor Q3
The second voltage-stabiliser tube Z2 is connected between the grid G of third metal-oxide-semiconductor Q3, the drain D of third metal-oxide-semiconductor Q3 is connected by the 4th resistance R4
Connect the supply voltage of+3.3V；
The grid G of second metal-oxide-semiconductor Q2 and the drain D of the 5th metal-oxide-semiconductor Q5 are both connected to third metal-oxide-semiconductor Q3 and the 4th resistance R4
Feeder ear on, the drain D of the second metal-oxide-semiconductor Q2 is by the supply voltage of 3rd resistor R3 connections+3.3V, and the second metal-oxide-semiconductor Q2
The communication receiving terminal RXD for turning serial port chip U1 with the public connecting end of 3rd resistor R3 with USB is connect, and driving is received as communication
End；
The communication transmitting terminal RST that the grid G of 4th metal-oxide-semiconductor Q4 turns serial port chip U1 with USB is connect, and is sent and is driven as communication
Moved end；The drain D of 4th metal-oxide-semiconductor Q4 is by the supply voltage of the 7th resistance R7 connections+3.3V, and the 4th metal-oxide-semiconductor Q4 and the 7th
The public connecting end of resistance R7 is connect with the grid G of the 5th metal-oxide-semiconductor Q5 and the grid G of the 6th metal-oxide-semiconductor Q6, the 6th metal-oxide-semiconductor Q6's
Drain D is connect by the 6th resistance R6 with DIM signal ends DIM, and the second metal-oxide-semiconductor Q2, third metal-oxide-semiconductor Q3, the 4th metal-oxide-semiconductor
The source S of Q4, the 5th metal-oxide-semiconductor Q5 and the 6th metal-oxide-semiconductor Q6 are all connected with ground terminal GND.
In order to make circuit more stable, the 8th resistance is connected between the base stage B of the first PNP triode Q1 and ground terminal GND
R8。
In order to make circuit simpler, and the antistatic protection to USB can be played the role of, the negative voltage number of USB interface P1
Turn the D- ends of serial port chip U1 according to line D- connections USB, the positive voltage data line D+ connections USB of USB interface P1 turns serial port chip U1
D+ ends, the supply voltage of the VBUS ends connection+5V of USB interface P1, and electrostatic protection chip is connected on USB interface P1
U2。
USB in the LED light adjusting circuits that the utility model obtains turns single wire communication circuit, and usb signal is sent to LED tune
DIM signals in light, at this point, USB is as signal sending end, while the USB that the DIM signals in LED light modulations can be also sent to,
USB is connect as signal receiving end so as to fulfill USB with the single-wire communication at DIM ends at this time, it will be able to which realizing will be more on computer
Kind of simulation dim signal is sent to DIM ends, and so as to fulfill the effect tested automatically, in addition the signal at DIM ends is sent to USB, by
USB is sent to other next group of equipment by computer, finally improves the testing efficiency of LED.
Description of the drawings
Fig. 1 is the particular circuit configurations schematic diagram that USB in the present embodiment in LED light adjusting circuits turns single wire communication circuit.
In figure：Switching circuit 1.
Specific embodiment
The utility model is further illustrated with reference to the accompanying drawings and examples.
Embodiment：
As shown in Figure 1, the USB in LED light adjusting circuits provided in this embodiment turns single wire communication circuit, dimmed including LED
DIM signal ends DIM, USB in circuit turn serial port chip U1, the power management chip U3 and USB of relevant voltage are provided to circuit
Interface P1, is connected with switching circuit 1 between USB turns serial port chip U1 and DIM signal end DIM, and the switching circuit 1 includes the
One PNP triode Q1, the second metal-oxide-semiconductor Q2, third metal-oxide-semiconductor Q3, the 4th metal-oxide-semiconductor Q4, the 5th metal-oxide-semiconductor Q5 and the 6th metal-oxide-semiconductor Q6,
Wherein：The emitter E of the first PNP triode Q1 connects the supply voltage of+10V, institute by second resistance
It states and is connected with the first voltage-stabiliser tube Z1, the first PNP triode Q1 between the base stage B and its emitter of the first PNP triode Q1
Collector C pass through the 4th diode D4 connection DIM signal ends DIM；
DIM signal ends DIM also passes through the grid G of the 5th resistance R5 connection third metal-oxide-semiconductors Q3, the source S of third metal-oxide-semiconductor Q3
The second voltage-stabiliser tube Z2 is connected between the grid G of third metal-oxide-semiconductor Q3, the drain D of third metal-oxide-semiconductor Q3 is connected by the 4th resistance R4
Connect the supply voltage of+3.3V；
The grid G of second metal-oxide-semiconductor Q2 and the drain D of the 5th metal-oxide-semiconductor Q5 are both connected to third metal-oxide-semiconductor Q3 and the 4th resistance R4
Feeder ear on, the drain D of the second metal-oxide-semiconductor Q2 is by the supply voltage of 3rd resistor R3 connections+3.3V, and the second metal-oxide-semiconductor Q2
The communication receiving terminal RXD for turning serial port chip U1 with the public connecting end of 3rd resistor R3 with USB is connect, and driving is received as communication
End；
The communication transmitting terminal RST that the grid G of 4th metal-oxide-semiconductor Q4 turns serial port chip U1 with USB is connect, and is sent and is driven as communication
Moved end；The drain D of 4th metal-oxide-semiconductor Q4 is by the supply voltage of the 7th resistance R7 connections+3.3V, and the 4th metal-oxide-semiconductor Q4 and the 7th
The public connecting end of resistance R7 is connect with the grid G of the 5th metal-oxide-semiconductor Q5 and the grid G of the 6th metal-oxide-semiconductor Q6, the 6th metal-oxide-semiconductor Q6's
Drain D is connect by the 6th resistance R6 with DIM signal ends DIM, and the second metal-oxide-semiconductor Q2, third metal-oxide-semiconductor Q3, the 4th metal-oxide-semiconductor
The source S of Q4, the 5th metal-oxide-semiconductor Q5 and the 6th metal-oxide-semiconductor Q6 are all connected with ground terminal GND.
In order to make circuit more stable, the 8th resistance is connected between the base stage B of the first PNP triode Q1 and ground terminal GND
R8。
In order to make circuit simpler, and the antistatic protection to USB can be played the role of, the negative voltage number of USB interface P1
Turn the D- ends of serial port chip U1 according to line D- connections USB, the positive voltage data line D+ connections USB of USB interface P1 turns serial port chip U1
D+ ends, the supply voltage of the VBUS ends connection+5V of USB interface P1, and electrostatic protection chip is connected on USB interface P1
U2。
By usb signal be sent to LED light modulation in DIM signals, at this point, USB be used as signal sending end, while LED light modulation
In the USB that can also be sent to of DIM signals, as signal receiving end, the single line so as to fulfill USB and DIM ends leads to USB at this time
News connection, it will be able to realize and the multiple analog dim signal on computer is sent to DIM ends, so as to fulfill the effect tested automatically
Fruit, in addition the signal at DIM ends be sent to USB, other next group of equipment is sent to by computer by USB, finally improves LED's
Testing efficiency.
Operation principle is connected with the USB of computer connection on USB interface P1, when starting computer, multigroup light modulation on computer
Signal can be then sent to USB, sending a signal to USB by USB turns serial port chip U1 according to one group of dim signal size of selection
On 7 feet, at this time USB turn serial port chip U1 work, control USB turn serial port chip U1 26 foot TXD ends work, at this time by USB
Data are sent to by interface P1 as signal sending end by the 4th metal-oxide-semiconductor Q4, the 5th metal-oxide-semiconductor Q5 and the 6th metal-oxide-semiconductor Q6
DIM signal end DIM when DIM signal ends DIM will dim data as signal sending end is sent to USB, pass through second at this time
Metal-oxide-semiconductor Q2, third metal-oxide-semiconductor Q3 driving USB turn the 25 foot RXD ends work of serial port chip U1, as communication receiving terminal, final output
To USB, transmitted so as to fulfill the single-wire communication of USB.
It should be noted that it is to turn serial ports using the USB of model cp2102 that the USB in the present embodiment, which turns serial port chip U1,
Chip, and since cp2102 can be commercially available, while how by writing software-driven its work after cp2102 connections
It is this field routine techniques, so not specifically describing.
Claims (3)
1. the USB in a kind of LED light adjusting circuits turns single wire communication circuit, including the DIM signal ends in LED light adjusting circuits（DIM）、
USB turns serial port chip（U1）, to circuit provide supply voltage power supply chip（U3）And USB interface（P1）, it is characterized in that：
USB turns serial port chip（U1）With DIM signal ends（DIM）Between be connected with switching circuit（1）, the switching circuit（1）Including
One PNP triode（Q1）, the second metal-oxide-semiconductor（Q2）, third metal-oxide-semiconductor（Q3）, the 4th metal-oxide-semiconductor（Q4）, the 5th metal-oxide-semiconductor（Q5）With the 6th
Metal-oxide-semiconductor（Q6）, wherein：
First PNP triode（Q1）Emitter E connect the supply voltage of+10V by second resistance, described first
PNP triode（Q1）Base stage B and its emitter between be connected with the first voltage-stabiliser tube（Z1）, first PNP triode（Q1）
Collector C pass through the 4th diode（D4）Connect DIM signal ends（DIM）；
DIM signal ends（DIM）Also pass through the 5th resistance（R5）Connect third metal-oxide-semiconductor（Q3）Grid G, third metal-oxide-semiconductor（Q3）'s
Source S and third metal-oxide-semiconductor（Q3）Grid G between be connected with the second voltage-stabiliser tube（Z2）, third metal-oxide-semiconductor（Q3）Drain D pass through
4th resistance（R4）The supply voltage of connection+3.3V；
Second metal-oxide-semiconductor（Q2）Grid G and the 5th metal-oxide-semiconductor（Q5）Drain D be both connected to third metal-oxide-semiconductor（Q3）With the 4th resistance
（R4）Feeder ear on, the second metal-oxide-semiconductor（Q2）Drain D pass through 3rd resistor（R3）The supply voltage of connection+3.3V, and second
Metal-oxide-semiconductor（Q2）With 3rd resistor（R3）Public connecting end and USB turn serial port chip（U1）The RXD connections of communication receiving terminal, make
Driving end is received for communication；
4th metal-oxide-semiconductor（Q4）Grid G and USB turn serial port chip（U1）The RST connections of communication transmitting terminal, as communication send drive
Moved end；4th metal-oxide-semiconductor（Q4）Drain D pass through the 7th resistance（R7）The supply voltage of connection+3.3V, and the 4th metal-oxide-semiconductor（Q4）
With the 7th resistance（R7）Public connecting end and the 5th metal-oxide-semiconductor（Q5）Grid G and the 6th metal-oxide-semiconductor（Q6）Grid G connection, the
Six metal-oxide-semiconductors（Q6）Drain D pass through the 6th resistance（R6）With DIM signal ends（DIM）Connection, and second metal-oxide-semiconductor（Q2）,
Three metal-oxide-semiconductors（Q3）, the 4th metal-oxide-semiconductor（Q4）, the 5th metal-oxide-semiconductor（Q5）With the 6th metal-oxide-semiconductor（Q6）Source S be all connected with ground terminal
（GND）.
2. the USB in LED light adjusting circuits according to claim 1 turns single wire communication circuit, it is characterized in that：First PNP tri-
Pole pipe（Q1）Base stage B and ground terminal（GND）Between be connected with the 8th resistance（R8）.
3. the USB in LED light adjusting circuits according to claim 1 turns single wire communication circuit, it is characterized in that：USB interface
（P1）Negative voltage data line（D-）Connection USB turns serial port chip（U1）D- ends, USB interface（P1）Positive voltage data line（D
+）Connection USB turns serial port chip（U1）D+ ends, USB interface（P1）VBUS ends connection+5V supply voltage, and connect in USB
Mouthful（P1）On be connected with electrostatic protection chip（U2）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721870356.6U CN207557936U (en) | 2017-12-28 | 2017-12-28 | USB in LED light adjusting circuits turns single wire communication circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721870356.6U CN207557936U (en) | 2017-12-28 | 2017-12-28 | USB in LED light adjusting circuits turns single wire communication circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207557936U true CN207557936U (en) | 2018-06-29 |
Family
ID=62660882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721870356.6U Expired - Fee Related CN207557936U (en) | 2017-12-28 | 2017-12-28 | USB in LED light adjusting circuits turns single wire communication circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207557936U (en) |
-
2017
- 2017-12-28 CN CN201721870356.6U patent/CN207557936U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20180629 Termination date: 20181228 |