CN106357328B - Set-top box input optical power detection device - Google Patents
Set-top box input optical power detection device Download PDFInfo
- Publication number
- CN106357328B CN106357328B CN201610736402.7A CN201610736402A CN106357328B CN 106357328 B CN106357328 B CN 106357328B CN 201610736402 A CN201610736402 A CN 201610736402A CN 106357328 B CN106357328 B CN 106357328B
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- module
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- top box
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- amplification
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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 present invention relates to set-top box technique fields, a kind of set-top box input optical power detection device is provided, input signal can not be directly detected with the optical fiber input set-top box for solving the problems, such as current, which includes photoelectric conversion module, amplification module, comparison module, LED indication module and power supply module.Signal after opto-electronic conversion is amplified by the present invention by amplification module, by comparing module, is compared to optical fiber input signal, then indicator light is driven, it allows indicator light to be lighted in prescribed limit, carrys out aid, set-top box is allow intuitively to detect input optical fibre signal.
Description
Technical field
The invention belongs to set-top box technique field, more particularly to a kind of set-top box input optical power detection device.
Background technology
Constantly increasing with the bandwidth demand of the network user, 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 characteristics that：
1, from local side to user, centre can substantially accomplish passive.
2, possess wide compared with short strip, meet the large-scale application mode of operator.
3, supported protocol is more flexible etc..
Since FTTH has the advantages that above-mentioned, the set-top box with optical fiber input module is more and more extensive to be used by a user.
But when watching program using the set-top box with optical fiber input module, since luminous power detects mould in optic module
After signal is changed into voltage signal by block, signal is very faint, can not intuitively be detected, and affects with optical fiber input module
The application of set-top box.
Invention content
【Technical problems to be solved】
The object of the present invention is to provide a kind of set-top box input optical power detection devices, and machine is inputted to solve current optical fiber
Top box can not directly detect the problem of input signal.
【Technical solution】
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 device, including photoelectric conversion module, amplification module, compare
Module, LED indication module and power supply module, the power supply module are used to be photoelectric conversion module, amplification module and comparison module
Power supply, the amplification module includes amplifying unit and amplification factor adjustment unit, and the comparison module includes comparing unit and ratio
Compared with range adjustment unit, the LED indication module includes LED drive circuit and LED adjustment circuits, the photoelectric conversion module
The input terminal of output end and amplification module connects, and the output end of the amplification module and the input terminal of comparison module connect, described
The output end of comparison module is connect with the input terminal of LEDLED indicating modules.
As a preferred embodiment, the comparison range adjustment unit includes 3rd resistor and 3rd resistor string
4th resistance of connection, the 5th resistance, with concatenated 6th resistance of the 5th resistance, one end of the 3rd resistor, the 5th resistance
One end is connect with power supply module, and an input terminal of the common end and comparing unit of the 3rd resistor and the 4th resistance connects
Connect, the connection of an input terminal of the common end and comparing unit of the 5th resistance and the 6th resistance, the 6th resistance it is another
One end is grounded, and the output end of the comparing unit is connect with LED indication unit.
As another preferred embodiment, the amplification factor adjustment unit include the first resistor that is connected in series with and
Second resistance, the input terminal connection of the common end and amplifying unit of the first resistor and second resistance, first electricity
The other end of resistance and the output end of amplifying unit connect, the other end ground connection of the second resistance, the output of the amplifying unit
End is connect with an input terminal of comparing unit.
【Advantageous effect】
Technical solution proposed by the present invention has the advantages that：
Signal after opto-electronic conversion is amplified by the present invention by amplification module, by comparing module, is inputted to optical fiber
Signal is compared, and then drives indicator light, and indicator light is allowed to be lighted in prescribed limit, carrys out aid, makes set-top box can be with
Intuitive detection input optical fibre signal solves the problems, such as that current optical fiber input set-top box can not directly detect input signal.
Description of the drawings
Fig. 1 is the functional block diagram for the set-top box input optical power detection device that the embodiment of the present invention one provides.
Fig. 2 is that the circuit of the amplification module for the set-top box input optical power detection device that the embodiment of the present invention two provides is former
Reason figure.
Fig. 3 is that the circuit of the comparison module for the set-top box input optical power detection device that the embodiment of the present invention two provides is former
Reason figure.
Fig. 4 is the electricity of the LED indication module for the set-top box input optical power detection device that the embodiment of the present invention two provides
Road schematic diagram.
Specific implementation mode
It to make the object, technical solutions and advantages of the present invention clearer, below will be to the specific implementation mode of the present invention
Carry out clear, complete description.
Embodiment one
Fig. 1 is the functional block diagram for the set-top box input optical power detection device that the embodiment of the present invention one provides.Such as Fig. 1 institutes
Show, which includes photoelectric conversion module 1, amplification module 2, comparison module 3, LED indication module 4 and power supply VCC.
Power supply VCC is used to power for photoelectric conversion module 1, amplification module 2, comparison module 3 and LED indication module 4.
Amplification module 2 includes amplifying unit and amplification factor adjustment unit.Comparison module 3 includes that comparing unit and comparison range adjustment are single
Member.LED indication module 4 includes LED drive circuit and LED adjustment circuits.The output end of photoelectric conversion module 1 and amplification module 2
Input terminal connection, the fiber-optic signal received is converted to voltage signal and sends the voltage signal by photoelectric conversion module 1
To amplification module 2.The output end of amplification module 2 is connect with the input terminal of comparison module 3, and amplification module 2 receives voltage signal
Afterwards, comparison module 3 is sent to after being amplified.The output end of comparison module 3 is connect with the input terminal of LED indication module 4, is compared
The voltage signal received is compared by module 3 with reference value, and LED indication module is output control signals to according to comparison result
4, the LED drive circuit and LED adjustment circuits of LED indication module 4 control indicator light according to the control signal that comparison module 3 exports
Display.
Embodiment two
On the basis of embodiment one, by the realization for being specifically chosen amplification module 2, comparison module 3, LED indication module 4
Circuit obtains embodiment two.Embodiment two provides a kind of set-top box input optical power detection device, which includes opto-electronic conversion
Module 1, amplification module 2, comparison module 3, LED indication module 4 and power supply VCC, power supply VCC are photoelectric conversion module
1, amplification module 2, comparison module 3 are powered.
Fig. 2 is the circuit of the amplification module 2 for the set-top box input optical power detection device that the embodiment of the present invention two provides
Schematic diagram.As shown in Fig. 2, amplification module 2 includes amplifier U1, resistance R1, resistance R2, and one end ground connection of resistance R2, resistance R2
The other end, resistance R1 one end connect with the negative input end of amplifier U1, the positive input terminal of amplifier U1 is as amplification module 2
Input terminal connect with the output end of photoelectric conversion module 1, the output end of amplifier U1 as amplification module 2 output end with than
Positive input terminal AIN+ compared with module 3 is connected with positive input terminal BIN+.It is put by selecting the resistance value of resistance R1, resistance R2 that can adjust
The amplification factor of big module 2, amplification factor utilize formula by voltage principle
It is calculated, wherein RR1For the resistance value of resistance R1, RR2For the resistance value of resistance R2, VAout is that the output voltage of amplification module 2 is believed
The voltage value of number Aout, Vinput are the voltage value 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.
Fig. 3 is the circuit of the comparison module 3 for the set-top box input optical power detection device that the embodiment of the present invention two provides
Schematic diagram.As shown in figure 3, comparison module 3 is realized using comparator U2, comparator U2 includes two comparing units.Resistance R3 and
Comparison range adjustment units of the resistance R4 as first comparing unit, a termination power supply VCC of resistance R3, resistance R3's
The other end, resistance R4 one end connect with the negative input end of first comparing unit, the output end conduct of first comparing unit
One output terminals A OUT1 of comparison module 3 is connect with LED indication 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 connection of two comparing units, another output end of the output end of second comparing unit as comparison module 3
BOUT1 is connect with LED indication module 4.
Fig. 4 is the electricity of the LED indication module 4 for the set-top box input optical power detection device that the embodiment of the present invention two provides
Road schematic diagram.As shown in figure 4, LED indication module 4 includes triode Q1, resistance R7, resistance R8, resistance R9, resistance R10 and two
Pole pipe LED.Resistance R10 connects with diode (LED), as LED adjustment circuits, can be adjusted by adjusting the size of resistance R10
The brightness of diode (LED).One end of resistance R8 and the output terminals A OUT1 connections of comparison module, one end of resistance R7 mould compared with
The output end BOUT1 connections of block, the other end of resistance R8 are connect with one end of one end of resistance R9, resistance R10, resistance R10's
The anode of the other end and diode (LED) connects, and the other end of resistance R9 is connect with the collector of triode Q1, the hair of triode Q1
The cathode ground connection of emitter-base bandgap grading, diode (LED), the base stage of triode Q1 are connect with the other end of resistance R7, wherein in the present embodiment,
It can set resistance R8 resistance value to 100 Ω, the resistance value of resistance R7 is set as 1k Ω, and the resistance value of resistance R9 is set as
1k Ω, triode Q1 select NPN type triode.According to the voltage value of the output terminals A OUT1 and output end BOUT1 of comparison module,
Diode (LED) is driven to light or extinguish by LED indication module 4.
Illustrate the operation principle of embodiment two below.
Optical fiber input signal is converted into electric signal by photoelectric conversion module 1, and input signal INPUT passes through amplification module one
Input comparison module after determining multiple amplification, by with the reference voltage that sets WithIt is compared, wherein VVCCFor the voltage value of power supply VCC, RR3For the resistance value of resistance R3, RR4For
The resistance value of resistance R4, RR5For the resistance value of resistance R5, RR6For the resistance value of resistance R6.In order to better illustrate this example approach, defineFor low end range,For higher end range, when the voltage of input signal INPUT
It is less thanWhen, output terminals A OUT1 is low level, and output end BOUT1 is low level, and diode (LED) is put out
It goes out；When input terminal INPUT voltages existWithBetween when, output end at this time
AOUT1 is high level, and output end BOUT1 is low level, and triode Q1 ends, and diode (LED) is lighted；When input terminal INPUT's
Voltage is more thanWhen, output terminals A OUT1 is high level at this time, and BOUT1 is high level, and triode Q1 is led
Logical, output terminals A OUT1 voltages are dragged down by force, and diode (LED) extinguishes.To realize that diode (LED) is lighted 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 can not directly examine
The problem of surveying input signal.
It is to be appreciated that the embodiment of foregoing description is a part of the embodiment of the present invention, rather than whole embodiments, also not
It is limitation of the present invention.Based on the embodiment of the present invention, those of ordinary skill in the art are not making the creative labor premise
Lower obtained every other embodiment, belongs to protection scope of the present invention.
Claims (3)
1. a kind of set-top box input optical power detection device, it is characterised in that including photoelectric conversion module, amplification module, compare mould
Block, LED indication module and power supply module, the power supply module are used to supply for photoelectric conversion module, amplification module and comparison module
Electricity, the amplification module include amplifying unit and amplification factor adjustment unit, and the comparison module includes comparing unit and compares
Range adjustment unit, the LED indication module include LED drive circuit and LED adjustment circuits, the photoelectric conversion module it is defeated
The input terminal of outlet and amplification module connects, and the output end of the amplification module and the input terminal of comparison module connect, the ratio
Output end compared with module is connect with the input terminal of LED indication module；After amplification module receives voltage signal, sent out after being amplified
It send to comparison module, the voltage signal received is compared by comparison module with reference value, is exported and is controlled according to comparison result
Signal is to LED indication module, control that the LED drive circuit and LED adjustment circuits of LED indication module are exported according to comparison module
Signal controls the display of indicator light.
2. set-top box input optical power detection device according to claim 1, it is characterised in that the amplification factor adjustment
Unit includes the first resistor and second resistance being connected in series with, the common end and amplifying unit of the first resistor and second resistance
The connection of an input terminal, the output end of the other end of the first resistor and amplifying unit connects, the second resistance it is another
One end is grounded, and the output end of the amplifying unit and comparing unit input terminal connect.
3. set-top box input optical power detection device according to claim 1, it is characterised in that the comparison range adjustment
Unit include 3rd resistor, with concatenated 4th resistance of 3rd resistor, the 5th resistance, with concatenated 6th resistance of the 5th resistance,
One end of the 3rd resistor, the 5th resistance one end connect with power supply module, the public affairs of the 3rd resistor and the 4th resistance
End is connect with an input terminal of comparing unit altogether, one of the common end and comparing unit of the 5th resistance and the 6th resistance
Input terminal connects, and the other end ground connection of the 6th resistance, the output end of the comparing unit is connect with LED indication 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 CN106357328A (en) | 2017-01-25 |
| CN106357328B true CN106357328B (en) | 2018-08-10 |
Family
ID=57855263
Family Applications (1)
| 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 |
Country Status (1)
| Country | Link |
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| CN (1) | CN106357328B (en) |
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 |
|---|---|
| CN106357328A (en) | 2017-01-25 |
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