CN204010635U - Based on the brightness regulating circuit of raspberry group - Google Patents
Based on the brightness regulating circuit of raspberry group Download PDFInfo
- Publication number
- CN204010635U CN204010635U CN201420416599.2U CN201420416599U CN204010635U CN 204010635 U CN204010635 U CN 204010635U CN 201420416599 U CN201420416599 U CN 201420416599U CN 204010635 U CN204010635 U CN 204010635U
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- raspberry
- computer
- processing unit
- central processing
- brightness regulating
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Abstract
The utility model relates to a kind of brightness regulating circuit based on raspberry group, comprise that photometry sensor, analog to digital converter, raspberry send computer and PMW signal output part, described photometry sensor sends computer to be connected by analog to digital converter and raspberry, and described raspberry sends computer to be connected with PMW signal output part; Described raspberry sends computer to comprise central processing unit and the internal memory being connected with central processing unit respectively, SD card, network interface and USB interface, and described central processing unit is connected with photometry sensor by analog to digital converter.Compared with prior art, the utlity model has the advantages such as simple in structure, powerful, easy to operate, security is high.
Description
Technical field
The utility model relates to a kind of brightness regulating circuit, especially relates to a kind of brightness regulating circuit based on raspberry group.
Background technology
Be directed in portable equipment, the use of LCDs is more and more extensive.Because LCD self can not be luminous, it needs a powerful light source to provide backlight to it, to clearly show information.But the backlight illumination of most of product is all fixed.Fixing backlight illumination is generally to set for darker external environment, and this backlight illumination is optional and power consumption is larger in the stronger situation of extraneous light intensity.
Utility model content
The purpose of this utility model is exactly to provide a kind of simple in structure, powerful, easy to operate, safe brightness regulating circuit based on raspberry group in order to overcome the defect that above-mentioned prior art exists.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of brightness regulating circuit based on raspberry group, it is characterized in that, comprise that photometry sensor, analog to digital converter, raspberry send computer and PMW signal output part, described photometry sensor sends computer to be connected by analog to digital converter and raspberry, and described raspberry sends computer to be connected with PMW signal output part; Described raspberry sends computer to comprise central processing unit and the internal memory being connected with central processing unit respectively, SD card, network interface and USB interface, and described central processing unit is connected with photometry sensor by analog to digital converter.
Described raspberry sends computer also to comprise the GPU being connected with central processing unit.
Video output interface and audio output interface that described raspberry sends computer also to comprise to be connected with central processing unit.
Also comprise the radio communication circuit of sending computer to be connected with raspberry.
Described radio communication circuit is wireless radio frequency circuit, Bluetooth circuit or ZIGbee circuit.
Also comprise send with raspberry that computer is connected for showing the oscillograph of PMW signal.
Also comprise the alarm of sending computer to be connected with raspberry.
Compared with prior art, the utlity model has following advantage:
1, simple in structure, powerful, utilize raspberry group as realizing environment, raspberry sends self structure little, functional powerful, utilize its this feature of simulation output, in conjunction with photometry sensor BF1750, exempt and utilized photoresistance to make the complicacy of amplifying circuit, more simplified;
2, easy to operate, there is radio function, can realize short-distance wireless control;
3, safe, by alarm is set, report to the police running under abnormal conditions.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
Embodiment
As shown in Figure 1, a kind of brightness regulating circuit based on raspberry group, comprise that photometry sensor 1, analog to digital converter 2, raspberry send computer 3 and PMW signal output part 4, described photometry sensor 1 sends computer 3 to be connected by analog to digital converter 2 and raspberry, and described raspberry sends computer 3 to be connected with PMW signal output part 4; Described raspberry sends computer 3 to comprise central processing unit 31 and the internal memory 32, SD card 33, network interface 34 and the USB interface 35 that are connected with central processing unit 31 respectively, and described central processing unit is connected with photometry sensor by analog to digital converter.
GPU36, video output interface 37 and audio output interface 38 that described raspberry sends computer 3 also to comprise to be connected with central processing unit 31 respectively.
The utility model also comprises respectively with raspberry sends radio communication circuit 5 that computer is connected, for showing oscillograph 6 and the alarm 7 of PMW signal.Described radio communication circuit 5 is wireless radio frequency circuit, Bluetooth circuit or ZIGbee circuit.
The utility model adopts raspberry to send as a single-chip microcomputer, based on the little functional powerful feature of its structure, can make a lot of inventions.The function that possesses simulation output based on it, can carry out regulation and control to the brightness of display.Consider the convenience of reduction and the use of equipment power dissipation, propose for equipment according to the scheme of extraneous light intensity regulating screen backlight at present, mainly make comparison and feedback by accepting extraneous light intensity Signals & Systems inside exactly, the pwm signal of internal circuit control light source is realized regulatory function with this.
Claims (7)
1. the brightness regulating circuit based on raspberry group, it is characterized in that, comprise that photometry sensor, analog to digital converter, raspberry send computer and PMW signal output part, described photometry sensor sends computer to be connected by analog to digital converter and raspberry, and described raspberry sends computer to be connected with PMW signal output part; Described raspberry sends computer to comprise central processing unit and the internal memory being connected with central processing unit respectively, SD card, network interface and USB interface, and described central processing unit is connected with photometry sensor by analog to digital converter.
2. a kind of brightness regulating circuit based on raspberry group according to claim 1, is characterized in that, described raspberry sends computer also to comprise the GPU being connected with central processing unit.
3. a kind of brightness regulating circuit based on raspberry group according to claim 1, is characterized in that, video output interface and audio output interface that described raspberry sends computer also to comprise to be connected with central processing unit.
4. a kind of brightness regulating circuit based on raspberry group according to claim 1, is characterized in that, also comprises the radio communication circuit of sending computer to be connected with raspberry.
5. a kind of brightness regulating circuit based on raspberry group according to claim 4, is characterized in that, described radio communication circuit is wireless radio frequency circuit, Bluetooth circuit or ZIGbee circuit.
6. a kind of brightness regulating circuit based on raspberry group according to claim 1, is characterized in that, also comprise send with raspberry that computer is connected for showing the oscillograph of PMW signal.
7. a kind of brightness regulating circuit based on raspberry group according to claim 1, is characterized in that, also comprises the alarm of sending computer to be connected with raspberry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420416599.2U CN204010635U (en) | 2014-07-25 | 2014-07-25 | Based on the brightness regulating circuit of raspberry group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420416599.2U CN204010635U (en) | 2014-07-25 | 2014-07-25 | Based on the brightness regulating circuit of raspberry group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204010635U true CN204010635U (en) | 2014-12-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420416599.2U Expired - Fee Related CN204010635U (en) | 2014-07-25 | 2014-07-25 | Based on the brightness regulating circuit of raspberry group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204010635U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078012A (en) * | 2014-07-25 | 2014-10-01 | 上海工程技术大学 | Brightness adjustment circuit based on Raspberry Pi |
-
2014
- 2014-07-25 CN CN201420416599.2U patent/CN204010635U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078012A (en) * | 2014-07-25 | 2014-10-01 | 上海工程技术大学 | Brightness adjustment circuit based on Raspberry Pi |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20180725 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |