CN101776479A - Digital photo induction device - Google Patents
Digital photo induction device Download PDFInfo
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- CN101776479A CN101776479A CN200910001922A CN200910001922A CN101776479A CN 101776479 A CN101776479 A CN 101776479A CN 200910001922 A CN200910001922 A CN 200910001922A CN 200910001922 A CN200910001922 A CN 200910001922A CN 101776479 A CN101776479 A CN 101776479A
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- hold amplifier
- digital
- induction device
- sampling hold
- analog
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Abstract
The invention relates to a digital photo induction device, which comprises a sample-and-hold amplifier and an analog-digital converter (ADC). A non-inverting input end and an inverting input end of the sample-and-hold amplifier are respectively connected with a photo induction diode; an output end of the sample-and-hold amplifier is connected with the analog-digital converter (ADC); a digital signal can be output by the analog-digital converter (ADC) to fulfill the aim of detecting a light source; and the output of the digital signal is generated along with the change of the light source.
Description
Technical field
The present invention relates to a kind of Photoinduction device, particularly a kind of digital photo induction device.
Background technology
See also shown in Figure 1ly, it is the synoptic diagram of photoresistance, and the characteristics of photoresistance 100 be exactly resistivity is to react to light with the resistance that the power of incident light changes, have the light time, immediately conduction; When unglazed, end immediately.
See also shown in Figure 2, it is the synoptic diagram of optical diode, optical diode 200 is structures of utilizing diode, when photon irradiation arrives the depletion region of diode, the electron hole pair that is produced causes the electron hole separately because the electric power that is subjected to is opposite, enters N type and P type differential gap respectively, form photocurrent, allow circuit turn-on.
Yet general optical inductor is if use above-mentioned photoresistance 100 or optical diode 200 separately, and it be subjected to temperature or noise easily, and its output has only single signal can't respond to two segment signals when work; Therefore, for the existing disappearance problem of forgoing, this case inventor is with professional attainment and technical concept that itself was possessed and itself be engaged in this work experience for many years, through studying and improveing repeatedly, and provide a kind of digital photo induction device, it is not easy to be subjected to temperature or noise, reaching the purpose of accurate detecting light source, and produces the output of digital signal along with the variation of light source.
Summary of the invention
Fundamental purpose of the present invention is the defective that overcomes above-mentioned prior art, and a kind of digital photo induction device is provided, and it can provide the detecting light source, and is accompanied by the variation of light source and the output that produces digital signal.
In order to achieve the above object, the invention provides a kind of digital photo induction device, it comprises: a sampling hold amplifier (Sampling Hold AMP), be to connect a photoinduction diode respectively at its normal phase input end and inverting input, the output terminal by the sampling hold amplifier connects an analog-digital converter (ADC) again; One analog-digital converter (ADC) via the exportable digital signal of described analog-digital converter (ADC), to reach the purpose of detecting light source, is followed the variation of light source and the output that produces digital signal.
Beneficial effect of the present invention is: by above-mentioned member, make digital photo induction device of the present invention, when work, be not easy to be subjected to temperature or noise, and it is behind the induction light source, can export with digital signal, can allow use have more diversity,, can learn the brightness that light source sent at that time by the digital signal of its generation.
Description of drawings
Fig. 1 is the synoptic diagram of existing photoresistance;
Fig. 2 is the synoptic diagram of existing optical diode;
Fig. 3 is a circuit diagram of the present invention;
Fig. 4 is the oscillogram of output signal corresponding light source of the present invention.
Description of reference numerals: 1-digital photo induction device; 10-photoinduction diode; The 20-hold amplifier of taking a sample; 30-analog-digital converter (ADC); The 100-photoresistance; The 200-optical diode.
Embodiment
Your juror is convenient to understand content of the present invention in order to make, and the effect that can reach, now cooperates graphic, figure number to be described in detail as follows:
See also Fig. 3, it is a circuit diagram of the present invention, a kind of digital photo induction device 1, and it comprises:
One sampling hold amplifier (Sampling Hold AMP) 20 is to connect a photoinduction diode 10 respectively at its normal phase input end and inverting input, and the output terminal by sampling hold amplifier 20 connects an analog-digital converter (ADC) 30 again; Wherein said photoinduction diode 10 has two, the P type of a photoinduction diode 10 connects the normal phase input end that face is connected in sampling hold amplifier 20, the P type of another photoinduction diode 10 connects the inverting input that face is connected in sampling hold amplifier 20, and the N type of these two photoinduction diodes 10 connects face and then holds with being connected in.
One analog-digital converter (ADC) 30, the output terminal of sampling hold amplifier 20 is via described analog-digital converter (ADC) 30 exportable digital signals.
See also Fig. 4, it is the oscillogram of output signal corresponding light source of the present invention, and its detecting is during light source, changes the output that produces digital signal with the brightness of light source, by the digital signal of its generation, can learn the brightness that light source sent at that time.
Be special for highlighting the present invention now, its advantage done one be summarized as follows:
Advantage of the present invention:
1, have progressive, the present invention is not easy to be subjected to temperature or noise jamming when work.
2, have industry applications, the present invention can reach the control requirement accurately behind the induction light source, and is accompanied by the variation of light source and the output that produces data signal.
In sum, the present invention is breaking through under the previous technology, has reached the effect that institute's desire is promoted really, and also is familiar with this skill person and is not easy to consider; Moreover not open before the present patent application, the progressive of its tool, novelty show the application important document that has met novel patent, propose novel application in accordance with the law.
More than explanation is just illustrative for the purpose of the present invention, and nonrestrictive, those of ordinary skills understand; under the situation of the spirit and scope that do not break away from following claims and limited, can make many modifications, change; or equivalence, but all will fall within the scope of protection of the present invention.
Claims (2)
1. digital photo induction device is characterized in that it comprises:
One sampling hold amplifier is to connect a photoinduction diode respectively at its normal phase input end and inverting input, and the output terminal by described sampling hold amplifier connects an analog-digital converter again;
The output terminal of described sampling hold amplifier is via described analog-digital converter output digital signal.
2. digital photo induction device according to claim 1, it is characterized in that, described photoinduction diode has two, the P type of a photoinduction diode connects the normal phase input end that face is connected in described sampling hold amplifier, the P type of another photoinduction diode connects the inverting input that face is connected in described sampling hold amplifier, and the N type of described two photoinduction diodes connects face and then holds with being connected in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910001922A CN101776479A (en) | 2009-01-14 | 2009-01-14 | Digital photo induction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910001922A CN101776479A (en) | 2009-01-14 | 2009-01-14 | Digital photo induction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101776479A true CN101776479A (en) | 2010-07-14 |
Family
ID=42512997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910001922A Pending CN101776479A (en) | 2009-01-14 | 2009-01-14 | Digital photo induction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101776479A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018226516A1 (en) * | 2017-06-05 | 2018-12-13 | Osram Sylvania Inc. | Device and system for measuring flicker |
-
2009
- 2009-01-14 CN CN200910001922A patent/CN101776479A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018226516A1 (en) * | 2017-06-05 | 2018-12-13 | Osram Sylvania Inc. | Device and system for measuring flicker |
| US10816397B2 (en) | 2017-06-05 | 2020-10-27 | Osram Sylvania Inc. | Device and system for measuring flicker |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: DIODES INC. Free format text: FORMER OWNER: YIHENG ELECTRONIC CO., LTD. Effective date: 20100925 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20100925 Address after: Taipei County, Taiwan Province, China Applicant after: Diodes Taiwan Inc. Address before: Hsinchu City, Taiwan, China Applicant before: Yiheng Electronic Co., Ltd. |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100714 |