CN212229203U - Be applied to circuit piping lane and confirm current output module that accompanies optical cable and exist - Google Patents
Be applied to circuit piping lane and confirm current output module that accompanies optical cable and exist Download PDFInfo
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- CN212229203U CN212229203U CN202021157706.6U CN202021157706U CN212229203U CN 212229203 U CN212229203 U CN 212229203U CN 202021157706 U CN202021157706 U CN 202021157706U CN 212229203 U CN212229203 U CN 212229203U
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Abstract
The invention discloses a current output module applied to a line pipe gallery for confirming existence of an accompanying optical cable, which comprises: the voltage stabilizing module U3 is used for outputting a standard voltage; the signal converter R39 is used for synthesizing a standard voltage signal output by the voltage stabilizing module U3 and a Current control signal provided by a Bias Current terminal into a Current control signal of the laser transmitter, and the Bias Current terminal is a terminal for providing the Current control signal to the Current output module by the single chip microcomputer; the laser current output module is used for transmitting a laser transmitter current signal to the singlechip; the LDPOW power terminal is a terminal through which the current output module transmits a laser transmitter power signal to the singlechip. The invention can quickly identify and adjust the working current of the laser emitter in the optical analysis host to be kept at a proper level, thereby ensuring that the laser emitter can stably run for a long time.
Description
Technical Field
The invention relates to the field of cable inspection, in particular to a current output module which is applied to a hammering method for confirming existence of an accompanying optical cable in a line pipe gallery.
Background
The existing methods for confirming the existence of the accompanying optical cable include the following methods: routing graph searching: calling original files for laying optical cables, and checking the original files one by one from an original routing diagram; the identification method comprises the following steps: taking an original routing diagram of the optical cable as a reference, performing well opening and well descending operation on a key tube well through which a target optical cable passes, manually scanning a label on the target optical cable from a plurality of optical cables in the well, and confirming the existence of the accompanying optical cable; a red light method: red light is injected into one end of the optical cable by using a red light pen, and whether the red light irradiates the paper board is observed by using a small paper board at the other end of the optical cable.
The routing graph is characterized in that: files need to be called, whether original routing diagram data are kept or not is not determined, and even if the original routing diagram data are checked on paper, the problems of data uncertainty and information inaccuracy exist due to the fact that the environment outside the field is changeable, line operation is frequent and messy, paper data are lost due to manual transmission and the like; the marking method is characterized in that: when optical fibers are laid, although the optical cables are adhered with labels, the optical cables are buried in an underground pipe gallery, the labels are in a humid environment for a long time, the field environment is severe and changeable, line operation is frequent, the labels inevitably fall off, a well cover needs to be opened when the labels are checked, a plurality of unknown optical cables exist in the well, and manual checking is time-consuming and labor-consuming; the red light method is characterized in that: the manual mode that need open every well lid, beat red light one by one to numerous optical cables in the well is confirmed, and is not obvious at daytime red light, wastes time and energy and is unscientific.
The optical cable vibration detection system is high in reliability, scientific, accurate, simple to operate, economical and economical, can confirm the existence of the accompanying optical cable, and is beneficial to efficiently, accurately and troubleshooting target optical cables. According to the system, a time domain vibration signal generated by knocking is utilized to confirm the existence of an accompanying optical cable, namely, the optical cable is knocked nearby a key pipe well cover in a pipe gallery, the accompanying optical cable can be vibrated, the phase of light in the optical cable is disturbed to change at the moment, namely, the vibration signal is converted into an optical signal, the optical signal is reflected by a passive optical terminal box and transmitted to an optical analysis host, and the optical analysis host demodulates the signal to obtain the position information of the accompanying optical cable. The optical analysis host needs to use a laser emitter to emit a coherent light source into the optical cable, and the optical analysis host needs to operate for a long time, so that the working current of the laser emitter needs to be kept at a stable level, and the output current of the laser emitter needs to be adjusted according to the working condition of the laser emitter.
Disclosure of Invention
In view of the above problems, the present invention provides a current output module, which is applied to an optical analysis host machine for confirming existence of an optical cable along with a line pipe gallery by using a hammering method, and can keep a working current of a laser emitter stable and adjust the magnitude of the output current according to the working condition of the laser emitter.
In order to achieve the above object, the present invention provides a current output module for use in confirming presence of an accompanying optical cable in a line pipe gallery by a hammering method, the current output module having a main circuit including: an IN pin of the voltage stabilizing module U3 is connected to a VCC power supply and grounded through a capacitor C13, a GND pin of the voltage stabilizing module U3 is grounded, an OUT pin of the voltage stabilizing module U3 is connected to a pin 1 of a signal converter R39, and the voltage stabilizing module U3 is configured to output a standard voltage; the laser emitter comprises a signal converter R39, a pin 3 of the signal converter R39 is connected with a Bias Current terminal, a pin 2 of the signal converter R39 is grounded through series connection of a resistor R22, a variable resistor W1 and a resistor R40, the signal converter R39 is used for synthesizing a standard voltage signal output by a voltage stabilizing module U3 and a Current control signal provided by the Bias Current terminal into a Current control signal of the laser emitter, and the Bias Current terminal is a terminal for providing the Current control signal to a Current output module by a single chip microcomputer; a pin 3 of a non-inverting input terminal of the power amplifier U1A is connected with a common terminal of a resistor R22 and a variable resistor W1 through a resistor R33 and is grounded through a capacitor C14, a pin 3 of a non-inverting input terminal of the power amplifier U1A is connected with a common terminal of resistors R57 and R58 through a diode D7, the other terminal of the resistor R57 is connected with a 2.5V power supply, the other terminal of the resistor R58 is grounded, a pin 2 of an inverting input terminal of the power amplifier U1A is connected with a pin 5 of a non-inverting input terminal of the power amplifier U1 29 through parallel connection of resistors R27, R28, R29, an output terminal pin 1 of the power amplifier U1 29 is connected with a pin 2 of an inverting input terminal of the power amplifier U1 29 through a capacitor C29 and is connected with a gate of a field effect transistor Q29 through a resistor R29, a gate of the field effect transistor Q29 is grounded through a capacitor C29, a source of the non-inverting input terminal of the power amplifier U1 29, the drain electrode of the field effect transistor Q1 is a terminal connected with a cathode pin of the laser emitter; the laser emitting device comprises a power amplifier U1B, wherein an inverting input end pin 6 of the power amplifier U1B is connected with an output end pin 7, the output end pin 7 of the power amplifier U1B is connected with an LDCUR current terminal, and the LDCUR current terminal is a terminal for transmitting a laser emitting device current signal to a single chip microcomputer by a current output module.
Preferably, the additional signal input circuit of the current output module includes: an external feedback signal interface P2, wherein a signal output terminal pin 1 of the external feedback signal interface P2 is connected with a non-inverting input terminal pin 3 of a power amplifier U8 through the series connection of a capacitor C16 and a resistor R46, and a pin 2 of the external feedback signal interface P2 is grounded; a pin 3 of a non-inverting input terminal of the power amplifier U8 is connected to a common terminal of a resistor R47 and a variable resistor W1 through a resistor R47, a pin 4 of an inverting input terminal of the power amplifier U8 is connected to the ground through a resistor R49 and is connected to a pin 1 of an output terminal of the power amplifier U8 through parallel connection of a resistor R50 and a capacitor C42, a pin 5 of a V + power supply input terminal of the power amplifier U8 is connected to a VCC power supply and is connected to the ground through a capacitor C6, a pin 2 of a V-power supply input terminal of the power amplifier U8 is connected to the ground, and a pin 1 of the output terminal of the power amplifier U8 is connected to a pin 3 of a non-inverting input terminal of the power amplifier U A.
Preferably, the feedback signal circuit of the current output module includes: the power amplifier U5B, the non-inverting input terminal pin 5 of power amplifier U5B is ground connection, the inverting input terminal pin 6 of power amplifier U5B passes through resistance R32 and links to each other with output terminal pin 7, the inverting input terminal pin 6 of power amplifier U5B is the terminal that links to each other with laser emitter power signal, the output terminal pin 7 of power amplifier U5B links to each other with LDPOW power terminal, LDPOW power terminal is the terminal that current output module transmitted laser emitter power signal to the singlechip.
The invention has the beneficial effects that: the current output module can quickly identify the working current change of the laser transmitter in the optical analysis host and adjust the working current of the laser transmitter to be kept at a proper level, so that the laser transmitter can stably run for a long time, and all-weather real-time monitoring and protection of the power optical cable are effectively guaranteed.
Drawings
FIG. 1 is a main circuit diagram of a current output module according to the present invention;
FIG. 2 is a circuit diagram of an additional signal input of the current output module according to the present invention;
FIG. 3 is a circuit diagram of a feedback signal of the current output module according to the present invention;
FIG. 4 is a diagram illustrating the practical effects of the optical analysis host of the present invention;
FIG. 5 is a time domain signal diagram of the output waveform of the optical analysis mainframe of the present invention;
FIG. 6 is a frequency domain signal diagram of the waveform diagram output by the optical analysis mainframe according to the present invention.
Detailed Description
As shown in fig. 1, a main circuit of the present invention applied to a current output module for confirming existence of an optical cable accompanying a line pipe corridor by a hammering method includes: an IN pin of the voltage stabilizing module U3 is connected to a VCC power supply and grounded through a capacitor C13, a GND pin of the voltage stabilizing module U3 is grounded, an OUT pin of the voltage stabilizing module U3 is connected to a pin 1 of a signal converter R39, and the voltage stabilizing module U3 is configured to output a standard voltage; the laser emitter comprises a signal converter R39, a pin 3 of the signal converter R39 is connected with a Bias Current terminal, a pin 2 of the signal converter R39 is grounded through series connection of a resistor R22, a variable resistor W1 and a resistor R40, the signal converter R39 is used for synthesizing a standard voltage signal output by a voltage stabilizing module U3 and a Current control signal provided by the Bias Current terminal into a Current control signal of the laser emitter, and the Bias Current terminal is a terminal for providing the Current control signal to a Current output module by a single chip microcomputer; a pin 3 of a non-inverting input terminal of the power amplifier U1A is connected with a common terminal of a resistor R22 and a variable resistor W1 through a resistor R33 and is grounded through a capacitor C14, a pin 3 of a non-inverting input terminal of the power amplifier U1A is connected with a common terminal of resistors R57 and R58 through a diode D7, the other terminal of the resistor R57 is connected with a 2.5V power supply, the other terminal of the resistor R58 is grounded, a pin 2 of an inverting input terminal of the power amplifier U1A is connected with a pin 5 of a non-inverting input terminal of the power amplifier U1 29 through parallel connection of resistors R27, R28, R29, an output terminal pin 1 of the power amplifier U1 29 is connected with a pin 2 of an inverting input terminal of the power amplifier U1 29 through a capacitor C29 and is connected with a gate of a field effect transistor Q29 through a resistor R29, a gate of the field effect transistor Q29 is grounded through a capacitor C29, a source of the non-inverting input terminal of the power amplifier U1 29, the drain electrode of the field effect transistor Q1 is a terminal connected with a cathode pin of the laser emitter; the laser emitting device comprises a power amplifier U1B, wherein an inverting input end pin 6 of the power amplifier U1B is connected with an output end pin 7, the output end pin 7 of the power amplifier U1B is connected with an LDCUR current terminal, and the LDCUR current terminal is a terminal for transmitting a laser emitting device current signal to a single chip microcomputer by a current output module.
As shown in fig. 2, the additional signal input circuit of the current output module includes: an external feedback signal interface P2, wherein a signal output terminal pin 1 of the external feedback signal interface P2 is connected with a non-inverting input terminal pin 3 of a power amplifier U8 through the series connection of a capacitor C16 and a resistor R46, and a pin 2 of the external feedback signal interface P2 is grounded; a pin 3 of a non-inverting input terminal of the power amplifier U8 is connected to a common terminal of a resistor R47 and a variable resistor W1 through a resistor R47, a pin 4 of an inverting input terminal of the power amplifier U8 is connected to the ground through a resistor R49 and is connected to a pin 1 of an output terminal of the power amplifier U8 through parallel connection of a resistor R50 and a capacitor C42, a pin 5 of a V + power supply input terminal of the power amplifier U8 is connected to a VCC power supply and is connected to the ground through a capacitor C6, a pin 2 of a V-power supply input terminal of the power amplifier U8 is connected to the ground, and a pin 1 of the output terminal of the power amplifier U8 is connected to a pin 3 of a non-inverting input terminal of the power amplifier U A.
As shown in fig. 3, the feedback signal circuit of the current output module includes: the power amplifier U5B, the non-inverting input terminal pin 5 of power amplifier U5B is ground connection, the inverting input terminal pin 6 of power amplifier U5B passes through resistance R32 and links to each other with output terminal pin 7, the inverting input terminal pin 6 of power amplifier U5B is the terminal that links to each other with laser emitter power signal, the output terminal pin 7 of power amplifier U5B links to each other with LDPOW power terminal, LDPOW power terminal is the terminal that current output module transmitted laser emitter power signal to the singlechip.
The specific scheme for confirming the existence of the accompanying optical cable in the line pipe gallery by using the hammering method is as follows:
s1: as shown in fig. 4, an optical analysis host is inserted along with one end of the optical cable;
s2: as shown in fig. 4, when a tool such as an 18 pound sledge is used to strike the pipe near the critical well lid in the pipe gallery, the optical cable is vibrated, and the light transmitted in the optical cable carries a vibration signal to the optical analysis host;
s3: as shown in fig. 5 and 6, the optical analysis host demodulates the optical signal to obtain a time domain signal and a frequency domain signal, and then knows the position information of the accompanying optical cable, i.e. determines whether the optical cable exists in the key well;
s4: and recording the position information of the optical cable, namely the GPS coordinate data of the key pipe well lid and the nearby POI reference object information, thereby sketching the physical path passed by the optical cable network and drawing an optical cable network routing diagram.
The scheme has the characteristics of high reliability, science and accuracy, simplicity and easiness in operation and the like; the method and the device meet the aims of high efficiency and accuracy of optical cable checking, obvious signals and great time and labor cost saving.
The scheme has the advantages that: tools such as a 18 pound sledge hammer are used for knocking near the key pipe well cover, vibration signals can be generated for the optical cable, so that the existence of the accompanying optical cable is confirmed, and the position information of the target optical cable is efficiently and accurately checked; the time is saved, the method is scientific and reliable, the labor cost is saved, and the damage to the optical cable caused by manual pulling and the influence on the safe and stable operation of data and signal control information of the real-time transmission of the power communication optical cable are reduced; the technology and the method are feasible and can be successfully copied to the routing check of the urban power optical cables and the check of the optical cables in other industries.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (3)
1. A current output module for use in a line gallery for confirming the presence of an accompanying optical cable, the current output module having a main circuit comprising: an IN pin of the voltage stabilizing module U3 is connected to a VCC power supply and grounded through a capacitor C13, a GND pin of the voltage stabilizing module U3 is grounded, an OUT pin of the voltage stabilizing module U3 is connected to a pin 1 of a signal converter R39, and the voltage stabilizing module U3 is configured to output a standard voltage; the laser emitter comprises a signal converter R39, a pin 3 of the signal converter R39 is connected with a Bias Current terminal, a pin 2 of the signal converter R39 is grounded through series connection of a resistor R22, a variable resistor W1 and a resistor R40, the signal converter R39 is used for synthesizing a standard voltage signal output by a voltage stabilizing module U3 and a Current control signal provided by the Bias Current terminal into a Current control signal of the laser emitter, and the Bias Current terminal is a terminal for providing the Current control signal to a Current output module by a single chip microcomputer; a pin 3 of a non-inverting input terminal of the power amplifier U1A is connected with a common terminal of a resistor R22 and a variable resistor W1 through a resistor R33 and is grounded through a capacitor C14, a pin 3 of a non-inverting input terminal of the power amplifier U1A is connected with a common terminal of resistors R57 and R58 through a diode D7, the other terminal of the resistor R57 is connected with a 2.5V power supply, the other terminal of the resistor R58 is grounded, a pin 2 of an inverting input terminal of the power amplifier U1A is connected with a pin 5 of a non-inverting input terminal of the power amplifier U1 29 through parallel connection of resistors R27, R28, R29, an output terminal pin 1 of the power amplifier U1 29 is connected with a pin 2 of an inverting input terminal of the power amplifier U1 29 through a capacitor C29 and is connected with a gate of a field effect transistor Q29 through a resistor R29, a gate of the field effect transistor Q29 is grounded through a capacitor C29, a source of the non-inverting input terminal of the power amplifier U1 29, the drain electrode of the field effect transistor Q1 is a terminal connected with a cathode pin of the laser emitter; the laser emitting device comprises a power amplifier U1B, wherein an inverting input end pin 6 of the power amplifier U1B is connected with an output end pin 7, the output end pin 7 of the power amplifier U1B is connected with an LDCUR current terminal, and the LDCUR current terminal is a terminal for transmitting a laser emitting device current signal to a single chip microcomputer by a current output module.
2. A current output module for use with a line gallery to confirm the presence of an optical fiber cable according to claim 1, wherein the additional signal input circuitry of the current output module includes: an external feedback signal interface P2, wherein a signal output terminal pin 1 of the external feedback signal interface P2 is connected with a non-inverting input terminal pin 3 of a power amplifier U8 through the series connection of a capacitor C16 and a resistor R46, and a pin 2 of the external feedback signal interface P2 is grounded; a pin 3 of a non-inverting input terminal of the power amplifier U8 is connected to a common terminal of a resistor R47 and a variable resistor W1 through a resistor R47, a pin 4 of an inverting input terminal of the power amplifier U8 is connected to the ground through a resistor R49 and is connected to a pin 1 of an output terminal of the power amplifier U8 through parallel connection of a resistor R50 and a capacitor C42, a pin 5 of a V + power supply input terminal of the power amplifier U8 is connected to a VCC power supply and is connected to the ground through a capacitor C6, a pin 2 of a V-power supply input terminal of the power amplifier U8 is connected to the ground, and a pin 1 of the output terminal of the power amplifier U8 is connected to a pin 3 of a non-inverting input terminal of the power amplifier U A.
3. The current output module as claimed in claim 1 applied to a line gallery for confirming the presence of an accompanying optical cable, wherein the feedback signal circuit of the current output module comprises: the power amplifier U5B, the non-inverting input terminal pin 5 of power amplifier U5B is ground connection, the inverting input terminal pin 6 of power amplifier U5B passes through resistance R32 and links to each other with output terminal pin 7, the inverting input terminal pin 6 of power amplifier U5B is the terminal that links to each other with laser emitter power signal, the output terminal pin 7 of power amplifier U5B links to each other with LDPOW power terminal, LDPOW power terminal is the terminal that current output module transmitted laser emitter power signal to the singlechip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021157706.6U CN212229203U (en) | 2020-06-19 | 2020-06-19 | Be applied to circuit piping lane and confirm current output module that accompanies optical cable and exist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021157706.6U CN212229203U (en) | 2020-06-19 | 2020-06-19 | Be applied to circuit piping lane and confirm current output module that accompanies optical cable and exist |
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| Publication Number | Publication Date |
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| CN212229203U true CN212229203U (en) | 2020-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021157706.6U Active CN212229203U (en) | 2020-06-19 | 2020-06-19 | Be applied to circuit piping lane and confirm current output module that accompanies optical cable and exist |
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| CN (1) | CN212229203U (en) |
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