CN105262546B - A kind of optical module - Google Patents
A kind of optical module Download PDFInfo
- Publication number
- CN105262546B CN105262546B CN201510609374.8A CN201510609374A CN105262546B CN 105262546 B CN105262546 B CN 105262546B CN 201510609374 A CN201510609374 A CN 201510609374A CN 105262546 B CN105262546 B CN 105262546B
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- circuit
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- power circuit
- optical module
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Abstract
The invention discloses a kind of optical modules; include the functional circuit for receiving or emitting optical signal and the power circuit for powering for the functional circuit; the voltage input end of the functional circuit is provided with protection circuit; when the output voltage of the power circuit is more than preset value, the protection circuit disconnects the supply access of the functional circuit.The optical module of the present invention protects circuit by setting, when the output voltage of power circuit is more than preset value, can disconnect the supply access of functional circuit, and achievees the purpose that protect optical module.
Description
Technical field
The invention belongs to technical field of photo communication, specifically, being to be related to a kind of optical module.
Background technology
The supply voltage of optical module be generally it is constant, with the development of optical communication technique, to the performance requirement of optical module
Also be gradually increased, optical module can high performance work must have stable supply voltage as premise, but actually make
It in the process, is limited by its use environment, not all environment can provide stable supply voltage, in certain evils
Hyperbaric environment, spread of voltage environment under bad environment, such as in mine, the working performance of corresponding optical module will also drop
It is low, cannot be satisfied optic communication requirement, or even damage to optical module, can not normal communication accordingly bury safety in production hidden danger.
Invention content
The present invention is poor in order to solve existing optical module adaptive capacity to environment, is easily damaged when in severe voltage environment
Problem, it is proposed that a kind of optical module can solve the above problems.
In order to solve the above-mentioned technical problem, the present invention is achieved by the following scheme：
A kind of optical module includes functional circuit for receiving or emitting optical signal and for being supplied for the functional circuit
The power circuit of electricity, protection circuit is provided in the voltage input end of the functional circuit, when the output electricity of the power circuit
When pressure is more than preset value, the protection circuit disconnects the supply access of the functional circuit.
Compared with prior art, the advantages and positive effects of the present invention are：The optical module of the present invention, by the way that protection electricity is arranged
Road can disconnect the supply access of functional circuit when the output voltage of power circuit is more than preset value, and reach protection light
The purpose of module.
After the detailed description of embodiment of the present invention is read in conjunction with the figure, the other features and advantages of the invention will become more
Add clear.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of embodiment functional-block diagram of optical module proposed by the invention；
Fig. 2 is a kind of embodiment circuit diagram of optical module proposed by the invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment one, the present embodiment propose a kind of optical module, as shown in Figure 1, including for receiving or emitting light letter
Number functional circuit and power circuit for powering for the functional circuit, be arranged in the voltage input end of the functional circuit
There is protection circuit, when the output voltage of the power circuit is more than preset value, the protection circuit is by the functional circuit
Supply access disconnects, and then optical module suspends the transmitting-receiving work to signal, when the output voltage of power circuit restores to normal model
When enclosing, the protective effect to optical module can be played, prevents unstable supply voltage from being damaged to optical module, when protection electricity
The supply access of the functional circuit is connected on road, and optical module is resumed work, and does not influence normal communication function.
As a preferred embodiment, as shown in Fig. 2, the protection circuit includes the electricity for being connected to the functional circuit
The second class protection electricity of the first class of protection circuit of pressure input terminal front end and the voltage input end rear end for being connected on the functional circuit
Road, the first class of protection are electrically connected between the voltage output end of the power circuit and ground terminal GND, when the power circuit
Output voltage VCC when being more than the first preset value V1, the first class of protection circuit by the voltage output end of the power circuit with
Ground terminal GND short circuit, the safe secondary protection circuit detect the output voltage VCC of the power circuit, defeated when the power circuit
When going out voltage VCC and being more than the second preset value V2, by the voltage input end of the voltage output end of power circuit and the functional circuit
Between circuit disconnect.Wherein, the front-end and back-end defined in the present embodiment refer to powering for function module according to power circuit
The flow direction of electric current, the circuit first passed around be front end, after by circuit be rear end, power circuit be sequentially connected with first class of protection electricity
It is connect with functional circuit after road, safe secondary protection circuit, when power circuit is that functional circuit is powered, electric current is followed by first class of protection
Circuit, safe secondary protection circuit, level-one functional circuit, when the output voltage of the power circuit is more than the first preset value V1, institute
First class of protection circuit is stated by the voltage output end of the power circuit and ground terminal GND short circuits, and then can will be located at stage circuit
Safe secondary protection circuit and the functional circuit short circuit at its rear, electric current are no longer flow towards safe secondary protection circuit and functional circuit short circuit, energy
Enough play the role of while protecting safe secondary protection circuit and functional circuit.
Wherein, in the present embodiment, the first class of protection circuit includes diode D1, anode and the ground of the diode D1
End connection, cathode are connect with the voltage output end of the power circuit.When power circuit output voltage VCC is less than diode D1's
When inverse peak voltage, diode D1 is off, i.e.,：It is functional circuit part to allow power circuit output voltage VCC
Power supply, when power circuit output voltage VCC is more than the inverse peak voltage of diode D1, diode D1 reverse-conductings, i.e.,：It is short
The circuit at road first class of protection circuit rear, to defencive function circuit and safe secondary protection circuit part.
In the present embodiment, the safe secondary protection circuit includes the voltage output end and ground terminal for being connected to the power circuit
Voltage detecting controller between GND and be connected to the power circuit voltage output end and the functional circuit voltage it is defeated
Enter the control switch between end, the control switches on-off the control that state receives the voltage detecting controller.Voltage is examined
The output voltage VCC that controller detects power circuit in real time is surveyed, when the output voltage VCC of power circuit exceeds the second preset value V2
（For example, the supply voltage of optical module is 3.3V, the second preset value V2 can be set as maximum working voltage 3.6V）When, second class protection
Circuit can control the control switch and disconnect, with the access of cut off the power circuit and functional circuit, to achieve the purpose that protection；
When voltage drops to normal working voltage（For example, 3V~3.6V）When, safe secondary protection circuit can control the control switch and be closed, from
And restore normal operating conditions.
By the operation principle of first class of protection circuit and safe secondary protection circuit it is found that first class of protection circuit is passive protection electricity
Road, safe secondary protection circuit are active protection circuit, and the effect of first class of protection circuit is when preventing safe secondary protection circuit from failing, in order to
When preventing the severe supply voltage of the limit to functional circuit may caused by injure, therefore, the first preset value V1 is big
Under the second preset value V2, normal work, the access of controlling power circuit and functional circuit is generally realized by safe secondary protection circuit
Break-make.
Include mainly microcontroller, light emission component and/or light-receiving component, practical work process in optical module functional circuit
In, above-mentioned module needs work on power, and complete corresponding signal transmitting and receiving and signal processing work.
In order to facilitate the production of circuit and the inserting of interface, it is provided with and connects between the functional circuit and the power circuit
Mouth circuit, the power circuit are that the functional circuit is powered by the interface circuit.
Certainly, above description is not limitation of the present invention, and the present invention is also not limited to the example above, this technology neck
The variations, modifications, additions or substitutions that the those of ordinary skill in domain is made in the essential scope of the present invention, should also belong to this hair
Bright protection domain.
Claims (5)
- Include functional circuit for receiving or emitting optical signal and for powering for the functional circuit 1. a kind of optical module Power circuit, it is characterised in that：The voltage input end of the functional circuit is provided with protection circuit, when the power circuit Output voltage when being more than preset value, the protection circuit disconnects the supply access of the functional circuit, the protection circuit Including be connected to the functional circuit voltage input end front end first class of protection circuit and be connected on the functional circuit The safe secondary protection circuit of voltage input end rear end, the first class of protection be electrically connected to the voltage output end of the power circuit with Between ground terminal, when the output voltage of the power circuit is more than the first preset value V1, the first class of protection circuit is by the electricity The voltage output end of source circuit detects the output voltage of the power circuit, works as institute with ground terminal shortcircuit, the safe secondary protection circuit When stating the output voltage of power circuit and being more than the second preset value V2, by the voltage output end of power circuit and the functional circuit Circuit between voltage input end disconnects, and the first preset value V1 is more than the second preset value V2.
- 2. optical module according to claim 1, it is characterised in that：The first class of protection circuit includes diode, and described two The anode of pole pipe is connect with ground terminal, and cathode is connect with the voltage output end of the power circuit.
- 3. optical module according to claim 1 or 2, it is characterised in that：The safe secondary protection circuit is described including being connected to Voltage detecting controller between the voltage output end and ground terminal of power circuit and the voltage output for being connected to the power circuit Control between end and the voltage input end of the functional circuit switchs, and the control switches on-off state and receives the voltage Detect the control of controller.
- 4. optical module according to claim 1 or 2, it is characterised in that：The functional circuit includes microcontroller, light emitting group Part and/or light-receiving component.
- 5. optical module according to claim 1 or 2, it is characterised in that：Between the functional circuit and the power circuit It is provided with interface circuit, the power circuit is powered by the interface circuit for the functional circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510609374.8A CN105262546B (en) | 2015-09-23 | 2015-09-23 | A kind of optical module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510609374.8A CN105262546B (en) | 2015-09-23 | 2015-09-23 | A kind of optical module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105262546A CN105262546A (en) | 2016-01-20 |
| CN105262546B true CN105262546B (en) | 2018-08-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510609374.8A Active CN105262546B (en) | 2015-09-23 | 2015-09-23 | A kind of optical module |
Country Status (1)
| Country | Link |
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| CN (1) | CN105262546B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109814045A (en) * | 2017-11-17 | 2019-05-28 | 中兴通讯股份有限公司 | A kind of device and method for testing optical interface |
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| CN2922290Y (en) * | 2006-07-12 | 2007-07-11 | 华为技术有限公司 | Radio-frequency device protecting circuit |
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| CN102136252A (en) * | 2010-01-25 | 2011-07-27 | 三星电子株式会社 | Backlight assembly and display apparatus having the same |
| CN102196623A (en) * | 2010-03-16 | 2011-09-21 | 登丰微电子股份有限公司 | LED (light-emitting diode) drive circuit with circuit detection function and power switching circuit |
| US8305717B2 (en) * | 2008-09-09 | 2012-11-06 | Inshore Holdings, Llc | LED modules for sign channel letters and driving circuit |
| CN102982770A (en) * | 2012-11-23 | 2013-03-20 | 四川长虹欣锐科技有限公司 | Flat panel light emitting diode (LED) backlight drive output short circuit protective circuit |
| CN103460803A (en) * | 2011-11-04 | 2013-12-18 | 丰裕国际电子私人有限公司 | System and device for driving a plurality of high powered LED units |
| CN204103921U (en) * | 2014-10-23 | 2015-01-14 | 绵阳冠瑞科技有限责任公司 | Passive pulse electrical to optical converter |
| CN104614603A (en) * | 2015-01-08 | 2015-05-13 | 国电南瑞科技股份有限公司 | On-site protection device status detection system and detection method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI308033B (en) * | 2006-04-28 | 2009-03-21 | Hon Hai Prec Ind Co Ltd | Discharge lamp driving device and voltage detecting circuit thereof |
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2015
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Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7324316B2 (en) * | 2004-07-16 | 2008-01-29 | Delta Electronics, Inc. | Hot-swap circuit system for fan tray module |
| CN2922290Y (en) * | 2006-07-12 | 2007-07-11 | 华为技术有限公司 | Radio-frequency device protecting circuit |
| KR20100000597A (en) * | 2008-06-25 | 2010-01-06 | 주식회사 반디라이트 | Input/output communication protection circuit of led lighting circuit |
| US8305717B2 (en) * | 2008-09-09 | 2012-11-06 | Inshore Holdings, Llc | LED modules for sign channel letters and driving circuit |
| CN101998726A (en) * | 2009-08-12 | 2011-03-30 | 有吉电子企业有限公司 | LED lamp driving circuit with surge protection function |
| CN102136252A (en) * | 2010-01-25 | 2011-07-27 | 三星电子株式会社 | Backlight assembly and display apparatus having the same |
| CN102196623A (en) * | 2010-03-16 | 2011-09-21 | 登丰微电子股份有限公司 | LED (light-emitting diode) drive circuit with circuit detection function and power switching circuit |
| CN103460803A (en) * | 2011-11-04 | 2013-12-18 | 丰裕国际电子私人有限公司 | System and device for driving a plurality of high powered LED units |
| CN102982770A (en) * | 2012-11-23 | 2013-03-20 | 四川长虹欣锐科技有限公司 | Flat panel light emitting diode (LED) backlight drive output short circuit protective circuit |
| CN204103921U (en) * | 2014-10-23 | 2015-01-14 | 绵阳冠瑞科技有限责任公司 | Passive pulse electrical to optical converter |
| CN104614603A (en) * | 2015-01-08 | 2015-05-13 | 国电南瑞科技股份有限公司 | On-site protection device status detection system and detection method thereof |
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|---|---|
| CN105262546A (en) | 2016-01-20 |
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