CN201742411U

CN201742411U - Checking instrument of optical cables, optical fibers and FTTX optical fibers

Info

Publication number: CN201742411U
Application number: CN2010202771932U
Authority: CN
Inventors: 陈国桐
Original assignee: Shanghai Telecommunication Engineering Co Ltd
Current assignee: Shanghai Telecommunication Engineering Co Ltd
Priority date: 2010-07-30
Filing date: 2010-07-30
Publication date: 2011-02-09
Anticipated expiration: 2020-07-30

Abstract

The utility model provides a checking instrument of optical cables, optical fibers and FTTX optical fibers, and relates to measuring equipment. The checking instrument comprises a time-base pulse generating circuit, a decimal metering circuit, a decimal carry metering circuit, a pulse decoding and sorting circuit and a plurality of LED light-emitting circuits, wherein the time-base pulse generating circuit is connected with the decimal metering circuit which is connected with the decimal carry metering circuit; the pulse decoding and sorting circuit is respectively connected with the decimal metering circuit and the decimal carry metering circuit; and the LED light-emitting circuits are respectively connected with the pulse decoding and sorting circuit. The checking instrument can effectively improve the working efficiency, reduce the generation of error fiber from jumping, and avoid the communication interrupt accidents brought by discharging the optical fibers by mistake in the process of removing the optical fibers.

Description

Optical cable, optical fiber, FTTX optical fiber are checked instrument

Technical field

The utility model relates to a kind of measuring equipment, and particularly a kind of optical cable, optical fiber, FTTX optical fiber are checked instrument.

Background technology

In the construction project of broadband A SL (asymmetric number loop technology), EPON (ethernet passive optical network technology), FTTB+LAN (Fiber-To-The-Building residence+local area network technology) metropolitan area network and city light net, relate to the jumper connection and the dismounting work of optical fiber in a large number at present.And when checking of optical fiber two ends detected, usually will be by means of light power meter, the light mouth module that is optical fiber one end comes optical fiber is confirmed that still existing this optical fiber is checked mode and existed some shortcomings then by the measurement of light power meter at the other end to the optical fiber input optical signal:

1, if the light signal of optical fiber one end is the laser beyond the visible spectrum, then other end eyes can't be observed (invisible spectrum and laser can injure eyes), cause the measuring position of light power meter uncertain, have greatly influenced optical fiber and have checked efficient.

2, the mode checked of the upset of in the past adopting confirms that promptly the optical fiber two ends all will be measured, and needs two people to cooperate, and once can only check a pair of optical fiber, inefficiency.

3, be not in place as yet for equipment or equipment is closed, when removing, promptly testing fiber is not equipped with or has removed light mouth module, causes and can't check optical fiber.

The utility model content

The purpose of this utility model provides a kind of optical cable, optical fiber, FTTX optical fiber and checks instrument, with solve existing optical fiber check mode complex operation, efficient low, be subjected to the problem of appointed condition restriction easily.

The utility model proposes a kind of optical cable, optical fiber, FTTX optical fiber and check instrument, main pulse generation circuit, decade counter circuit, decimal carry counting circuit, pulse decoding sorting circuit and some LED illuminating circuits when comprising, the time main pulse generation circuit link to each other with decade counter circuit, decade counter circuit links to each other with the decimal carry counting circuit, the pulse decoding sorting circuit links to each other with decade counter circuit and decimal carry counting circuit respectively, and the LED illuminating circuit all links to each other with the pulse decoding sorting circuit.

Check instrument according to the described optical cable of the utility model preferred embodiment, optical fiber, FTTX optical fiber, each LED illuminating circuit includes red laser light-emitting diode, green laser light-emitting diode and chip for driving, red laser light-emitting diode and green laser light-emitting diode are connected to the laser output interface, and the red laser light-emitting diode all links to each other with chip for driving with the green laser light-emitting diode.

Check instrument according to the described optical cable of the utility model preferred embodiment, optical fiber, FTTX optical fiber, the time main pulse generation circuit comprise timing chip and control capacittance, control capacittance links to each other with the timing chip, the timing chip links to each other with decade counter circuit.

Check instrument according to the described optical cable of the utility model preferred embodiment, optical fiber, FTTX optical fiber, decade counter circuit and decimal carry counting circuit are the CMOS integrated circuit.

Check instrument according to the described optical cable of the utility model preferred embodiment, optical fiber, FTTX optical fiber, the pulse decoding sorting circuit comprises some and door and some NOR gate, and each LED illuminating circuit corresponding one and door and a NOR gate, the input of NOR gate all links to each other with decade counter circuit, the output and the decimal carry counting circuit that are connected NOR gate with the input of door link to each other with the LED illuminating circuit with the output of door.

With respect to prior art, the beneficial effects of the utility model are: the utility model can provide the visual fiber position and the affirmation of logarithm, to increase work efficiency, reduce wrong fine generation the in the jumper connection, avoid removing in the optical fiber process because of tearing the communication disruption accident that wrong optical fiber brings open.

Description of drawings

Fig. 1 is a kind of embodiment Organization Chart that the utility model optical cable, optical fiber, FTTX optical fiber are checked instrument;

A kind of embodiment circuit diagram of main pulse generation circuit when Fig. 2 is the utility model;

Fig. 3 is a kind of embodiment circuit diagram of the utility model decade counter circuit;

Fig. 4 is a kind of embodiment circuit diagram of the utility model decimal carry counting circuit;

Fig. 5 is a kind of embodiment circuit diagram of the utility model LED illuminating circuit.

Embodiment

See also Fig. 1, it is a kind of embodiment Organization Chart that the utility model optical cable, optical fiber, FTTX optical fiber are checked instrument.This optical cable, optical fiber, FTTX optical fiber are checked instrument, main pulse generation circuit 11, decade counter circuit 12, decimal carry counting circuit 13, pulse decoding sorting circuit 14 and some LED illuminating circuits 15 when comprising, the time main pulse generation circuit 11 link to each other with decade counter circuit 12, decade counter circuit 12 is counted 13 circuit with decimal carry and is linked to each other, pulse decoding sorting circuit 14 links to each other with decade counter circuit 12 and decimal carry counting circuit 12 respectively, and LED illuminating circuit 15 all links to each other with pulse decoding sorting circuit 14.

Be convenient to further understand the utility model, the utility model be described below in conjunction with the physical circuit figure of each several part.See also Fig. 2, and in conjunction with Fig. 1, a kind of embodiment circuit diagram of main pulse generation circuit when it is the utility model, (preferred model is: NE555), resistance R 7, resistance R 8, capacitor C 12 and control capacittance C13 form by timing chip U8 for it, be used to produce bright successively count pulse and the carry pulse of respectively organizing LED illuminating circuit 15, pulse is in the Q pin output of timing chip U8.Main pulse output frequency when adjustment control capacittance C13 can change can clear resolution when lighting to adjust to LED.

See also Fig. 3 and Fig. 4, it is respectively the embodiment circuit diagram of the utility model decade counter circuit and decimal carry counting circuit.Decade counter circuit 12 and decimal carry counting circuit 13 are CMOS (Complementary Metal-Oxide-Semiconductor, CMOS are called for short CMOS) integrated circuit.(preferred model is: 4017) forms, the pulse of main pulse generation circuit 11 is carried out one to five counting by the input of CLK pin to decade counter circuit 12 when coming from, and correspondingly exports at Q0～Q4 pin by the U6 integrated circuit (IC) chip.(preferred model is decimal carry counting circuit 13: 4017) form by the U7 integrated circuit (IC) chip, when full ten pulses of U6 integrated circuit (IC) chip meter, the Q9 pin output pulse of U6 integrated circuit (IC) chip is input to the CLK pin of U7 integrated circuit (IC) chip, the U7 integrated circuit (IC) chip to the time main pulse generation circuit 11 per ten pulses carry out one to five counting, and in the Q0 of U7 integrated circuit (IC) chip～Q4 pin output, so that the carry signal of pulse sorting circuit to be provided.

In conjunction with Fig. 1 and Fig. 4, pulse decoding sorting circuit 14 of the present utility model can (preferred model be: 4078) form one to five pulse decoding electronic circuit by five NOR gate, export one, two, three, four, five pulse respectively corresponding to five LED illuminating circuits 15, and it is glittering once to five different number of times respectively to drive five LED illuminating circuits 15.And by five (preferred model is: 4081) be subjected to the Q0～Q4 of U7 integrated circuit (IC) chip export control, finish the sorting successively of LED illuminating circuit 15 is sorted with door.

See also Fig. 5, and in conjunction with Fig. 1, it is a kind of embodiment circuit diagram of the utility model LED illuminating circuit 15.Optical cable, optical fiber, a FTTX optical fiber are checked instrument and are provided with a plurality of LED illuminating circuits usually, and (preferred model is each LED illuminating circuit: MAX6301), red laser light-emitting diode D1, green laser light-emitting diode D2, resistance R 1, capacitor C 1, capacitor C 2 form by chip for driving U1.Chip for driving U1 is the drive integrated circult of lasing fluorescence diode, because the lasing fluorescence diode is under direct current directly drives, the luminous power that can produce is limited, influence transmitting range red, green glow, and the pulse current after this circuit employing high frequency modulated drives red laser light-emitting diode D1, green laser light-emitting diode D2, thereby has increased transmitting range.And red laser light-emitting diode D1, green laser light-emitting diode D2 are connected to the laser output interface, are used for connecting optical fiber to be checked.

During use, testing fiber is inserted red, the green laser output interface that optical cable, optical fiber, FTTX optical fiber are checked instrument, open optical cable, optical fiber, FTTX optical fiber and check the instrument power supply, can see glittering successively optical fiber tail end at an other end of optical fiber, what red, the green while was glittering is with a pair of optical fiber.And,, can once finish the affirmation of many optical fiber by glittering number of times (in the accompanying drawing of present embodiment, press glittering one to five time, be expressed as first to the 5th pair respectively).

The utility model can provide the visual fiber position and the affirmation of logarithm, to increase work efficiency, reduces wrong fine generation the in the jumper connection, avoids removing in the optical fiber process because of tearing the communication disruption accident that wrong optical fiber brings open.More than disclosed only be several specific embodiments of the application, but the application is not limited thereto, any those skilled in the art can think variation, all should drop in the application's the protection range.

Claims

1. optical cable, optical fiber, FTTX optical fiber is checked instrument, it is characterized in that, main pulse generation circuit when comprising one, a decade counter circuit, a decimal carry counting circuit, a pulse decoding sorting circuit and some LED illuminating circuits, this the time main pulse generation circuit link to each other with this decade counter circuit, this decade counter circuit links to each other with this decimal carry counting circuit, this pulse decoding sorting circuit links to each other with this decade counter circuit and this decimal carry counting circuit respectively, and these some LED illuminating circuits all link to each other with this pulse decoding sorting circuit.

2. optical cable as claimed in claim 1, optical fiber, FTTX optical fiber are checked instrument, it is characterized in that, each LED illuminating circuit includes a red laser light-emitting diode, a green laser light-emitting diode and a chip for driving, this red laser light-emitting diode and this green laser light-emitting diode are connected to a laser output interface, and this red laser light-emitting diode all links to each other with this chip for driving with this green laser light-emitting diode.

3. optical cable as claimed in claim 1, optical fiber, FTTX optical fiber are checked instrument, it is characterized in that, this the time main pulse generation circuit comprise a timing chip and a control capacittance, this control capacittance links to each other with this timing chip, this timing chip links to each other with this decade counter circuit.

4. optical cable as claimed in claim 1, optical fiber, FTTX optical fiber are checked instrument, it is characterized in that, this decade counter circuit and this decimal carry counting circuit are the CMOS integrated circuit.

5. optical cable as claimed in claim 1, optical fiber, FTTX optical fiber are checked instrument, it is characterized in that, this pulse decoding sorting circuit comprises some and door and some NOR gate, and each LED illuminating circuit corresponding one and door and a NOR gate, the input of these some NOR gate all links to each other with this decade counter circuit, these some inputs with door are connected output and this decimal carry counting circuit of these some NOR gate, and these are some to link to each other with these some LED illuminating circuits with the output of door.