CN101510810B - Device and method for automatically closing laser based on light sensitive element - Google Patents
Device and method for automatically closing laser based on light sensitive element Download PDFInfo
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- CN101510810B CN101510810B CN 200810242125 CN200810242125A CN101510810B CN 101510810 B CN101510810 B CN 101510810B CN 200810242125 CN200810242125 CN 200810242125 CN 200810242125 A CN200810242125 A CN 200810242125A CN 101510810 B CN101510810 B CN 101510810B
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- veneer
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Abstract
The invention discloses a light sensor-based device which automatically closes a laser, and a system and a method thereof. The method comprises the following steps: an optical fiber is separated from a veneer laser, the laser light of which illuminates on the light sensor to cause an impedance change of the light sensor; the circuit state is changed automatically according to the impedance change of the light sensor; and the circuit state is polled incessantly so as to automatically close the laser through the change of the circuit state. The current change of a detection light sensor is adopted to change the circuit state, the laser is closed automatically through polling the changed circuit state so as to ensure that the veneer laser is closed in time after veneer optical fiber is pulled out, thereby effectively avoiding damage caused by the laser to human body; meanwhile, the contact of an optical interface with the outside is cut off, thus effectively reducing dust pollution to the optical interface, having very good dust-proof effect and saving unnecessary waste.
Description
Technical field
The present invention relates to supervising device and system and the technical field of wave division multiplexing WDM equipment laser amplifier, in particular, what relate to is a kind of improvement of device and the system and method thereof based on the light-sensitive element automatically closing laser.
Background technology
Intensive multiplexed optical wave also transmits with an optical fiber with one group of optical wavelength of DWDM (Dense Wavelength Division Multiplexing is hereinafter to be referred as DWDM) technology combination.This is a laser technology that is used for improving at existing fiber shaft bandwidth on the net.This technology is in the optical fiber of an appointment, and the tight spectrum spacing of multiplexed single fiber carrier is in order to utilize the transmission performance that can reach.
Present intensive multiplexed optical wave can provide the single fiber transmission capacity of 16/20 ripple or 32/40 ripple with dwdm system, and maximum can arrive 160 ripples, has flexibly extended capability.
And laser amplifier as intensive multiplexed optical wave with the part in the dwdm system, amplify when having realized in the optical fiber multipath light signal, greatly reduce the cost of light relaying; Also can realize good coupling with Transmission Fibers simultaneously, have the advantages such as high-gain low-noise.Therefore successfully be applied to wave division multiplexing WDM (Wavelength Division Multiplexing is hereinafter to be referred as WDM) optical communication system, greatly increased capacity and the transmission range of the information that can transmit in the optical fiber.
But favourable just have a fraud, also brought high risk when laser has high-gain.The tester is in testing equipment, perhaps the attendant is in service equipment, usually need the manual optical fiber that pulls out, at this moment, if the laser of veneer does not cut out timely, because laser is luminous stronger, will tester or attendant's health be damaged, especially maximum to the harm of eyes.
Existing intensive multiplexed optical wave does not still have a kind of system and device in time to close laser amplifier when pulling out veneer output port optical fiber with dwdm system.Therefore in the urgent need to a kind of device and system, after veneer output port optical fiber pulls out, in time close the laser of veneer, the injury of effectively avoiding laser that the person is caused.
In addition, because existing intensive multiplexed optical wave exposes outside with the light mouth of DWDM equipment veneer is frequent, if do not use for a long time, will be infected with a large amount of dusts, untimely cleaning during use then can reduce the light transmissioning efficiency that intensive multiplexed optical wave is used dwdm system greatly.And each cleaning all can take user of service's plenty of time, consumes simultaneously a large amount of alcohol and lens paper.
Therefore, prior art still awaits improving and development.
Summary of the invention
The object of the invention is to, a kind of device based on the light-sensitive element automatically closing laser and system and method thereof are provided, after veneer optical fiber is extracted, close timely the laser of veneer, the injury of effectively avoiding laser that the person is caused; Simultaneously, can also play good dust-proof effect to the optical output port of veneer, save unnecessary waste.
Technical scheme of the present invention is as follows:
A kind of device based on the light-sensitive element automatically closing laser comprises a light-sensitive element and a light signal module that is electrically connected with it, wherein,
Described light-sensitive element is attached on the slide plate of a veneer laser optical mouth, described slide plate is used for landing in the situation of optical fiber disengaging veneer laser, and block described veneer laser optical mouth, so that the laser of described veneer laser shines directly on the described light-sensitive element;
Described light-sensitive element is used for breaking away from the situation of veneer laser at optical fiber, receives the Ear Mucosa Treated by He Ne Laser Irradiation of described veneer laser, and the impedance of described light-sensitive element is changed;
Described light signal module is positioned at the rear end of described light-sensitive element, is used for judging the impedance variation of described light-sensitive element, in order to come automatically closing laser by changing circuit state.
Described device, wherein, described light signal module specifically comprises a detector and a register that is positioned at its rear end, wherein:
Described detector is used for judging by detecting the electric current of described light-sensitive element whether the impedance of described light-sensitive element changes;
Described register is electrically connected with described detector, is convenient to described detector when the impedance of judging described light-sensitive element changes, and the usefulness of carrying out set is to change circuit state.
A kind of method based on the light-sensitive element automatically closing laser may further comprise the steps:
A, optical fiber break away from the veneer laser, and the Ear Mucosa Treated by He Ne Laser Irradiation of described veneer laser changes the impedance of described light-sensitive element to light-sensitive element;
B, according to the impedance variation of described light-sensitive element, system changes circuit state automatically;
C, the uninterrupted described circuit state of poll are in order to come automatically closing laser by the circuit state that changes;
Operation when wherein, optical fiber breaks away from the veneer laser in the described steps A specifically comprises:
A1, described light-sensitive element is attached on the slide plate of a veneer laser optical mouth;
Described veneer laser optical mouth is blocked in landing when A2, described slide plate break away from the veneer laser at optical fiber, and the laser of described veneer laser is shone directly on the described light-sensitive element.
Described method, wherein, the operation when changing circuit state among the described step B specifically comprises:
The electric current of B1, the described light-sensitive element of detection judges whether the impedance of described light-sensitive element changes;
Setting circuit state when B2, the impedance that detects described light-sensitive element and its normal value are not inconsistent.
Described method, wherein, the operation among the described step C during the described circuit state of poll specifically comprises:
Issue the order of closing laser to described veneer laser when being polled to circuit state and being set.
Described method, wherein, the operation of system also comprises after the described C:
D1, after described veneer laser cuts out, the impedance of described light-sensitive element returns to normal value;
D2, by detecting the variation of light-sensitive element electric current in the scheduled time, judge whether the impedance of described light-sensitive element conforms to its normal value, be reset circuit state then.
A kind of device and system and method thereof based on the light-sensitive element automatically closing laser provided by the present invention, owing to adopt the curent change that detects light-sensitive element to change circuit state, and the circuit state automatically closing laser that changes by poll, so that after veneer optical fiber is extracted, in time closed the laser of veneer, the injury of effectively having avoided laser that the person is caused; Simultaneously, cut off light mouth and extraneous contacting, effectively reduced the contamination by dust of light mouth, played good dust-proof effect, saved unnecessary waste.
Description of drawings
Fig. 1 is hardware configuration schematic diagram of the present invention;
Fig. 2 is Executive Module schematic flow sheet of the present invention;
Fig. 3 is detection module schematic flow sheet of the present invention.
Embodiment
Below with reference to shown in accompanying drawing, embodiment and the embodiment that the present invention is based on the light-sensitive element automatically closing laser described in detail.
A kind of device and system and method thereof based on the light-sensitive element automatically closing laser of the present invention, main core point are, change circuit state according to the curent change that detects light-sensitive element, and the circuit state automatically closing laser that changes by poll; Be well known to those skilled in the art as for WDM, DWDM, veneer laser and the technology such as light mouth, slide plate and register thereof, do not repeat them here.
Briefly, be exactly to break away from the situation of veneer laser at optical fiber, utilize the Ear Mucosa Treated by He Ne Laser Irradiation light-sensitive element in the laser, the impedance of light-sensitive element is changed.After the impedance that detection module detects light-sensitive element changes, circuit state set.The primary control program of veneer issues the order of closing laser after being polled to circuit state set, realize the autoshutdown of laser.
The device and the system thereof that the present invention is based on the light-sensitive element automatically closing laser comprise following components altogether, as shown in Figure 1:
Light-sensitive element 100: light-sensitive element 100 is attached on the slide plate of veneer laser 130 light mouths, after optical fiber is extracted, light-sensitive element 100 is along with the slide plate of this light mouth falls, the laser of veneer laser 130 is shone directly on the light-sensitive element 100, because the irradiation of laser, the impedance of light-sensitive element 100 changes.The both sides of light-sensitive element 100 connect specified voltage, and after impedance changes, thereby the electric current of light-sensitive element 100 changes.
Light signal module 110: inclusion test device 111 and register 112.Detector 111 is used for by the electric current of detection light-sensitive element 100, and judges according to curent change whether the impedance of light-sensitive element 100 changes, and set or reseting register 112.
It is different from its normal value that detector 111 detects the impedance of light-sensitive element 100, then set register 112; The impedance that detects light-sensitive element 100 is identical with its normal value, and then reseting register 112.
Veneer primary control program 120: this program is associated with described light signal module, continual polling circuit state, and namely the state of register 112 when the state that is polled to register 112 is in SM set mode, issues to veneer laser 130 and closes laser command.
Compared with prior art, the device and the system thereof that the present invention is based on the light-sensitive element automatically closing laser have following advantage and beneficial effect:
The one, can protect tester and attendant.When the veneer amplifier was being worked, if the optical fiber of failing light-emitting window is pulled out in tester and attendant's active or misoperation, detector can detect output light rapidly, closes laser within the extremely short time, avoids personnel are damaged.
The 2nd, have good dustproof effect.When output optical fibre was pulled out, the slide plate of detector can along with sliding, be closed defeated light-emitting window and extraneous contacting.
The below is elaborated to the method that the present invention is based on the light-sensitive element automatically closing laser according to other accompanying drawings, wherein,
Install the detecting step of part as shown in Figure 3:
Step S310, pull out optical fiber after, optical fiber breaks away from the veneer laser;
Step S320, with the slide plate landing of light-sensitive element, block out veneer laser optical mouth;
The light-sensitive element of the Ear Mucosa Treated by He Ne Laser Irradiation of step S330, veneer laser to the slide plate, after light-sensitive element received laser, its impedance changed;
Step S340, detection module change in the utmost point detects light-sensitive element in such as 30ms in the short time impedance, and judge whether the impedance of light-sensitive element conforms to its normal value, are then detection of end operations, otherwise enter step S350;
The impedance of step S350, light-sensitive element does not conform to its normal value, detection module set register.
The execution in step of components of system as directed is as shown in Figure 2:
Step S210, veneer primary control program poll characterize the register of circuit state, when being polled to register and being set, enter step S220, otherwise finish polling operation;
Step S220, issue the order of closing laser and finish polling operation.
After laser was closed, laser can't shine on the light-sensitive element, and light-sensitive element is when the irradiation that does not have laser, and its impedance recovers again normal value; Detection module the utmost point in the short time such as 30ms in, by detecting the variation of light-sensitive element electric current, the impedance that detects light-sensitive element conforms to normal value, the detection module reseting register.
Technology based on light-sensitive element in the above preferred embodiment can adopt existing various possible schemes, is well known to those skilled in the art, and also repeats no more at this.
A kind of device and the system and method thereof based on the light-sensitive element automatically closing laser that provide in the specific embodiment of the invention, owing to adopt the curent change that detects light-sensitive element to change circuit state, and the circuit state automatically closing laser that changes by poll, so that after veneer optical fiber is extracted, in time closed the laser of veneer, the injury of effectively having avoided laser that the person is caused; Simultaneously, cut off light mouth and extraneous contacting, effectively reduced the contamination by dust of light mouth, played good dust-proof effect, saved unnecessary waste.
Should be understood that; for those of ordinary skills; can be improved according to the explanation of such scheme or conversion; replace curent change etc. such as the change in voltage that detects described light-sensitive element, and all these improvement and conversion all should belong to the protection range of claims of the present invention.
Claims (6)
1. the device based on the light-sensitive element automatically closing laser comprises a light-sensitive element and a light signal module that is electrically connected with it, it is characterized in that,
Described light-sensitive element is attached on the slide plate of a veneer laser optical mouth, described slide plate is used for landing in the situation of optical fiber disengaging veneer laser, and block described veneer laser optical mouth, so that the laser of described veneer laser shines directly on the described light-sensitive element;
Described light-sensitive element is used for breaking away from the situation of veneer laser at optical fiber, receives the Ear Mucosa Treated by He Ne Laser Irradiation of described veneer laser, and the impedance of described light-sensitive element is changed;
Described light signal module is positioned at the rear end of described light-sensitive element, is used for judging the impedance variation of described light-sensitive element, in order to come automatically closing laser by changing circuit state.
2. device according to claim 1 is characterized in that, described light signal module specifically comprises a detector and a register that is positioned at its rear end, wherein:
Described detector is used for judging by detecting the electric current of described light-sensitive element whether the impedance of described light-sensitive element changes;
Described register is electrically connected with described detector, is convenient to described detector when the impedance of judging described light-sensitive element changes, and the usefulness of carrying out set is to change circuit state.
3. method based on the light-sensitive element automatically closing laser may further comprise the steps:
A, optical fiber break away from the veneer laser, and the Ear Mucosa Treated by He Ne Laser Irradiation of described veneer laser changes the impedance of described light-sensitive element to light-sensitive element;
B, according to the impedance variation of described light-sensitive element, system changes circuit state automatically;
C, the uninterrupted described circuit state of poll are in order to come automatically closing laser by the circuit state that changes;
Operation when wherein, optical fiber breaks away from the veneer laser in the described steps A specifically comprises:
A1, described light-sensitive element is attached on the slide plate of a veneer laser optical mouth;
Described veneer laser optical mouth is blocked in landing when A2, described slide plate break away from the veneer laser at optical fiber, and the laser of described veneer laser is shone directly on the described light-sensitive element.
4. method according to claim 3 is characterized in that, the operation when changing circuit state among the described step B specifically comprises:
The electric current of B1, the described light-sensitive element of detection judges whether the impedance of described light-sensitive element changes;
Setting circuit state when B2, the impedance that detects described light-sensitive element and its normal value are not inconsistent.
5. method according to claim 4 is characterized in that, the operation among the described step C during the described circuit state of poll specifically comprises:
Issue the order of closing laser to described veneer laser when being polled to circuit state and being set.
6. method according to claim 5 is characterized in that, the operation of system also comprises after the described C:
D1, after described veneer laser cuts out, the impedance of described light-sensitive element returns to normal value;
D2, by detecting the variation of light-sensitive element electric current in the scheduled time, judge whether the impedance of described light-sensitive element conforms to its normal value, be reset circuit state then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810242125 CN101510810B (en) | 2008-12-31 | 2008-12-31 | Device and method for automatically closing laser based on light sensitive element |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810242125 CN101510810B (en) | 2008-12-31 | 2008-12-31 | Device and method for automatically closing laser based on light sensitive element |
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| Publication Number | Publication Date |
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| CN101510810A CN101510810A (en) | 2009-08-19 |
| CN101510810B true CN101510810B (en) | 2013-03-20 |
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| CN 200810242125 Expired - Fee Related CN101510810B (en) | 2008-12-31 | 2008-12-31 | Device and method for automatically closing laser based on light sensitive element |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1641391A (en) * | 2004-01-14 | 2005-07-20 | 王子梁 | Photosensitive oiptical fiber connecting seat |
| CN101178151A (en) * | 2006-11-10 | 2008-05-14 | 詹诺普蒂克自动化技术有限公司 | Laser protection arrangement with safety cutoff |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1641391A (en) * | 2004-01-14 | 2005-07-20 | 王子梁 | Photosensitive oiptical fiber connecting seat |
| CN101178151A (en) * | 2006-11-10 | 2008-05-14 | 詹诺普蒂克自动化技术有限公司 | Laser protection arrangement with safety cutoff |
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| CN101510810A (en) | 2009-08-19 |
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Granted publication date: 20130320 Termination date: 20171231 |