CN106357328A - Detecting device for input optical power of set-top box - Google Patents
Detecting device for input optical power of set-top box Download PDFInfo
- Publication number
- CN106357328A CN106357328A CN201610736402.7A CN201610736402A CN106357328A CN 106357328 A CN106357328 A CN 106357328A CN 201610736402 A CN201610736402 A CN 201610736402A CN 106357328 A CN106357328 A CN 106357328A
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- China
- Prior art keywords
- module
- resistance
- input
- top box
- outfan
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
- H04B10/07955—Monitoring or measuring power
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
- H04B10/69—Electrical arrangements in the receiver
- H04B10/691—Arrangements for optimizing the photodetector in the receiver
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
- H04B10/69—Electrical arrangements in the receiver
- H04B10/693—Arrangements for optimizing the preamplifier in the receiver
Abstract
The invention relates to the field of set-top box technology, and provides an detecting device for input optical power of set-top box to solve the problem that the current optical fiber input set-top box cannot directly detect the input signal. The device comprises a photoelectric conversion module, an amplifying module, a comparing module, an LED indicating module and a power supply module. The device amplifies the photoelectrically converted signal through the amplifying module, compares the optical fiber input signal through the comparison module, and then drives the indicator light to be lit within the prescribed range for signaling, so that the set-top box can detects the input fiber signal directly.
Description
Technical field
The invention belongs to set-top box technique field, particularly to a kind of Set Top Box input optical power detection means.
Background technology
Bandwidth demand with the network user constantly increases, and traditional adsl mode bandwidth becomes the bottleneck of network application,
Ftth (fiber to the home, fiber to the home) mode is widely used.
Ftth has the following characteristics that
1st, from local side to user, centre substantially can be accomplished passive.
2nd, have compared with short strip width, meet the large-scale application mode of operator.
3rd, supported protocol is more flexible etc..
Because ftth has above-mentioned advantage, the Set Top Box with optical fiber input module is more and more widely used by a user.
But, during using the viewing program of the Set Top Box with optical fiber input module, due to luminous power detection mould in optic module
Signal is changed into after voltage signal by block, signal very faint it is impossible to intuitively be detected, have impact on optical fiber input module
The application of Set Top Box.
Content of the invention
[technical problem to be solved]
It is an object of the invention to provide a kind of Set Top Box input optical power detection means, to solve current optical fiber input machine
Top box cannot direct detection input signal problem.
[technical scheme]
The present invention is achieved by the following technical solutions.
The present invention relates to a kind of Set Top Box input optical power detection means, including photoelectric conversion module, amplification module, compare
Module, led indicating module and supply module, described supply module is used for as photoelectric conversion module, amplification module and comparison module
Power supply, described amplification module includes amplifying unit and amplification adjustment unit, and described comparison module includes comparing unit and ratio
Compared with scope adjustment unit, described led indicating module includes led drive circuit and led adjustment circuit, described photoelectric conversion module
Outfan is connected with the input of amplification module, and the outfan of described amplification module is connected with the input of comparison module, described
The outfan of comparison module is connected with the input of ledled indicating module.
As one kind preferred embodiment, described comparison range adjustment unit includes 3rd resistor and 3rd resistor string
6th resistance of the 4th resistance, the 5th resistance and the 5th resistant series of connection, one end of described 3rd resistor, the 5th resistance
One end is all connected with supply module, and the common port of described 3rd resistor and the 4th resistance is connected with an input of comparing unit
Connect, described 5th resistance and the common port of the 6th resistance are connected with an input of comparing unit, described 6th resistance another
One end is grounded, and the outfan of described comparing unit is connected with led indicating member.
As another preferred embodiment, described amplification adjustment unit include the first resistor that is connected in series and
Second resistance, the common port of described first resistor and second resistance is connected with amplifying unit input, described first electricity
The other end of resistance is connected with the outfan of amplifying unit, the other end ground connection of described second resistance, the output of described amplifying unit
End is connected with an input of comparing unit.
[beneficial effect]
Technical scheme proposed by the present invention has the advantages that
Signal after opto-electronic conversion is amplified by the present invention by amplification module, by comparison module, optical fiber is inputted
Signal is compared, and then drives display lamp, allows display lamp to light in prescribed limit, carry out aid, make Set Top Box permissible
Intuitively detect input optical fibre signal, solve the problems, such as that current optical fiber input Set Top Box cannot direct detection input signal.
Brief description
The theory diagram of the Set Top Box input optical power detection means that Fig. 1 provides for embodiments of the invention one.
The circuit of the amplification module of the Set Top Box input optical power detection means that Fig. 2 provides for embodiments of the invention two is former
Reason figure.
The circuit of the comparison module of the Set Top Box input optical power detection means that Fig. 3 provides for embodiments of the invention two is former
Reason figure.
The electricity of the led indicating module of the Set Top Box input optical power detection means that Fig. 4 provides for embodiments of the invention two
Road schematic diagram.
Specific embodiment
For making the object, technical solutions and advantages of the present invention clearer, below by the specific embodiment to the present invention
Carry out clear, complete description.
Embodiment one
The theory diagram of the Set Top Box input optical power detection means that Fig. 1 provides for the embodiment of the present invention one.As Fig. 1 institute
Show, this device includes photoelectric conversion module 1, amplification module 2, comparison module 3, led indicating module 4 and power supply vcc.
Power supply vcc is used for powering for photoelectric conversion module 1, amplification module 2, comparison module 3 and led indicating module 4.
Amplification module 2 includes amplifying unit and amplification adjustment unit.Comparison module 3 includes comparing unit and comparison range adjustment is single
Unit.Led indicating module 4 includes led drive circuit and led adjustment circuit.The outfan of photoelectric conversion module 1 and amplification module 2
Input connect, photoelectric conversion module 1 by the fiber-optic signal receiving be converted to voltage signal and by this voltage signal send
To amplification module 2.The outfan of amplification module 2 is connected with the input of comparison module 3, and amplification module 2 receives voltage signal
Afterwards, send after being amplified to comparison module 3.The outfan of comparison module 3 is connected with the input of led indicating module 4, compares
The voltage signal receiving and reference value are compared by module 3, output control signals to led indicating module according to comparative result
The led drive circuit of 4, led indicating modules 4 and led adjustment circuit control display lamp according to the control signal that comparison module 3 exports
Display.
Embodiment two
On the basis of embodiment one, by specifically chosen amplification module 2, comparison module 3, led indicating module 4 realization
Circuit obtains embodiment two.Embodiment two provides a kind of Set Top Box input optical power detection means, and this device includes opto-electronic conversion
Module 1, amplification module 2, comparison module 3, led indicating module 4 and power supply vcc, power supply vcc is photoelectric conversion module
1st, amplification module 2, comparison module 3 are powered.
The circuit of the amplification module 2 of the Set Top Box input optical power detection means that Fig. 2 provides for embodiments of the invention two
Schematic diagram.As shown in Fig. 2 amplification module 2 includes amplifier u1, resistance r1, resistance r2, one end ground connection of resistance r2, resistance r2
The other end, one end of resistance r1 be connected with the negative input end of amplifier u1, the positive input terminal of amplifier u1 is as amplification module 2
Input be connected with the outfan of photoelectric conversion module 1, the outfan of amplifier u1 as amplification module 2 outfan with than
Connect compared with the positive input terminal ain+ and positive input terminal bin+ of module 3.Can be adjusted by the resistance of selection resistance r1, resistance r2 and put
The amplification of big module 2, amplification utilizes formula by voltage principle
It is calculated, wherein rr1For the resistance of resistance r1, rr2For the resistance of resistance r2, vaout is the output voltage letter of amplification module 2
The magnitude of voltage of number aout, vinput is the magnitude of voltage of the input voltage signal input of amplification module 2, the input electricity of amplification module 2
The fiber-optic signal of input is converted to by pressure signal input by photoelectric conversion module 1.
The circuit of the comparison module 3 of the Set Top Box input optical power detection means that Fig. 3 provides for embodiments of the invention two
Schematic diagram.As shown in figure 3, comparison module 3 adopts comparator u2 to realize, comparator u2 includes two comparing units.Resistance r3 and
As the comparison range adjustment unit of first comparing unit, the one of resistance r3 terminates power supply vcc to resistance r4, resistance r3's
The other end, one end of resistance r4 are connected with the negative input end of first comparing unit, the outfan conduct of first comparing unit
One outfan aout1 of comparison module 3 is connected with led indicating module 4；Resistance r5 and resistance r6 is as second comparing unit
Comparison range adjustment unit, a termination power supply vcc of resistance r5, the other end of resistance r5, one end of resistance r6 and the
The negative input end of two comparing units connects, and the outfan of second comparing unit is as another outfan of comparison module 3
Bout1 is connected with led indicating module 4.
The electricity of the led indicating module 4 of the Set Top Box input optical power detection means that Fig. 4 provides for embodiments of the invention two
Road schematic diagram.As shown in figure 4, led indicating module 4 includes audion q1, resistance r7, resistance r8, resistance r9, resistance r10 and two
Pole pipe led.Resistance r10 is connected with diode led, as led adjustment circuit, can be by adjusting the size adjustment of resistance r10
The brightness of diode led.One end of resistance r8 is connected with the outfan aout1 of comparison module, one end of resistance r7 with compare mould
The outfan bout1 of block connects, and the other end of resistance r8 is connected with one end of resistance r9, one end of resistance r10, resistance r10's
The other end is connected with the positive pole of diode led, and the other end of resistance r9 is connected with the colelctor electrode of audion q1, and audion q1 sends out
Emitter-base bandgap grading, the minus earth of diode led, the base stage of audion q1 is connected with the other end of resistance r7, wherein, in the present embodiment,
The resistance value of resistance r8 can be set to 100 ω, the resistance value of resistance r7 is set to 1k ω, and the resistance value of resistance r9 is set to
1k ω, audion q1 select npn audion.The magnitude of voltage of the outfan aout1 according to comparison module and outfan bout1,
Drive diode led to light by led indicating module 4 or extinguish.
The operation principle of embodiment two is described below.
Optical fiber input signal is converted into the signal of telecommunication by photoelectric conversion module 1, and input signal input is certain through amplification module
Multiple amplify after input comparison module, by with the reference voltage setting With
It is compared, wherein, vvccFor the magnitude of voltage of power supply vcc, rr3For the resistance of resistance r3, rr4For the resistance of resistance r4, rr5
For the resistance of resistance r5, rr6Resistance for resistance r6.In order to better illustrate this example approach, definitionFor low end range,For higher end range, when the voltage of input signal input
It is less thanWhen, outfan aout1 is low level, and outfan bout1 is low level, and diode led puts out
Go out；When input input voltage existsWithBetween when, now outfan
Aout1 is high level, and outfan bout1 is low level, and audion q1 ends, and diode led lights；When input input's
Voltage is more thanWhen, now outfan aout1 is high level, and bout1 is high level, and audion q1 leads
Logical, outfan aout1 voltage is dragged down by force, and diode led extinguishes.Thus realize diode led lighting within the specified range
Effect.
As can be seen from the above embodiments, the embodiment of the present invention solves current optical fiber input Set Top Box and cannot directly examine
Survey the problem of input signal.
It is to be appreciated that the embodiment of foregoing description is a part of embodiment of the present invention, rather than whole embodiments, also not
It is limitation of the present invention.Based on embodiments of the invention, those of ordinary skill in the art are not paying creative work premise
Lower obtained every other embodiment, broadly falls into protection scope of the present invention.
Claims (3)
1. a kind of Set Top Box input optical power detection means is it is characterised in that including photoelectric conversion module, amplification module, comparing mould
Block, led indicating module and supply module, described supply module is used for supplying for photoelectric conversion module, amplification module and comparison module
Electricity, described amplification module includes amplifying unit and amplification adjustment unit, and described comparison module includes comparing unit and compares
Scope adjustment unit, described led indicating module includes led drive circuit and led adjustment circuit, described photoelectric conversion module defeated
Go out end to be connected with the input of amplification module, the outfan of described amplification module is connected with the input of comparison module, described ratio
It is connected with the input of led indicating module compared with the outfan of module.
2. Set Top Box input optical power detection means according to claim 1 is it is characterised in that described amplification adjusts
Unit includes the first resistor being connected in series and second resistance, the common port of described first resistor and second resistance and amplifying unit
Input connect, the other end of described first resistor is connected with the outfan of amplifying unit, described second resistance another
One end is grounded, and the outfan of described amplifying unit is connected with comparing unit input.
3. Set Top Box input optical power detection means according to claim 1 is it is characterised in that described comparison range adjusts
Unit includes the 6th resistance of the 4th resistance, the 5th resistance and the 5th resistant series that 3rd resistor is connected with 3rd resistor,
One end of described 3rd resistor, one end of the 5th resistance are all connected with supply module, the public affairs of described 3rd resistor and the 4th resistance
Altogether end is connected with an input of comparing unit, the common port of described 5th resistance and the 6th resistance and one of comparing unit
Input connects, the other end ground connection of described 6th resistance, and the outfan of described comparing unit is connected with led indicating module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610736402.7A CN106357328B (en) | 2016-08-26 | 2016-08-26 | Set-top box input optical power detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610736402.7A CN106357328B (en) | 2016-08-26 | 2016-08-26 | Set-top box input optical power detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106357328A true CN106357328A (en) | 2017-01-25 |
| CN106357328B CN106357328B (en) | 2018-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610736402.7A Active CN106357328B (en) | 2016-08-26 | 2016-08-26 | Set-top box input optical power detection device |
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Citations (8)
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|---|---|---|---|---|
| CN1438715A (en) * | 2002-01-25 | 2003-08-27 | 夏普公司 | Optical communication circuit ship, optical-electrical sheared transmission device and optical sending device |
| JP2005130173A (en) * | 2003-10-23 | 2005-05-19 | Sharp Corp | Optical receiving circuit and electronic apparatus provided with the same |
| CN101385263A (en) * | 2006-02-15 | 2009-03-11 | 科学-亚特兰大股份有限公司 | Fiber-to-the-home (ftth) optical receiver with distributed gain control |
| CN102340349A (en) * | 2011-06-10 | 2012-02-01 | 浙江工业大学 | Multi-port automatic fault detection system for single-fiber three-way multiplexer |
| CN102447511A (en) * | 2010-10-14 | 2012-05-09 | 中国电信股份有限公司 | Light path tester |
| CN102496342A (en) * | 2011-12-29 | 2012-06-13 | 广东海博威视电子科技股份有限公司 | LED display panel automatic tester |
| CN102891717A (en) * | 2012-03-22 | 2013-01-23 | 索尔思光电（成都）有限公司 | Reinforced state monitoring, storage and report suitable for optical module |
| US8947347B2 (en) * | 2003-08-27 | 2015-02-03 | Sony Computer Entertainment Inc. | Controlling actions in a video game unit |
-
2016
- 2016-08-26 CN CN201610736402.7A patent/CN106357328B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1438715A (en) * | 2002-01-25 | 2003-08-27 | 夏普公司 | Optical communication circuit ship, optical-electrical sheared transmission device and optical sending device |
| US8947347B2 (en) * | 2003-08-27 | 2015-02-03 | Sony Computer Entertainment Inc. | Controlling actions in a video game unit |
| JP2005130173A (en) * | 2003-10-23 | 2005-05-19 | Sharp Corp | Optical receiving circuit and electronic apparatus provided with the same |
| CN101385263A (en) * | 2006-02-15 | 2009-03-11 | 科学-亚特兰大股份有限公司 | Fiber-to-the-home (ftth) optical receiver with distributed gain control |
| CN102447511A (en) * | 2010-10-14 | 2012-05-09 | 中国电信股份有限公司 | Light path tester |
| CN102340349A (en) * | 2011-06-10 | 2012-02-01 | 浙江工业大学 | Multi-port automatic fault detection system for single-fiber three-way multiplexer |
| CN102496342A (en) * | 2011-12-29 | 2012-06-13 | 广东海博威视电子科技股份有限公司 | LED display panel automatic tester |
| CN102891717A (en) * | 2012-03-22 | 2013-01-23 | 索尔思光电（成都）有限公司 | Reinforced state monitoring, storage and report suitable for optical module |
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| Publication number | Publication date |
|---|---|
| CN106357328B (en) | 2018-08-10 |
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