Fusion splicing system

Abstract

The purpose of the present invention is to provide a fusion splicing system, a fusion splicing device, and a deterioration determination method with which it is possible to determine a deteriorated state of electrodes with high accuracy.　A fusion splicing system (10) of the present invention comprises: a fusion splicing device (1) including a first electrode (3c1) and a second electrode (3c2) for performing fusion splicing of optical fibers by electric discharge, and an electric discharge circuit (3d) for outputting a control signal (S1) to the first electrode (3c1) and receiving a feedback signal (S2) of the control signal from the second electrode (3c2); and a deterioration determination unit (22) for determining, from a state of the feedback signal (S2), whether or not the first electrode (3c1) and the second electrode (3c2) have deteriorated.

Description

[Technical field]

[0001] The present disclosure relates to a fusion splicing system, a fusion splicing device, and a degradation determination method. This application claims priority to Japanese Application No. 2020-080375 filed on April 30, 2020, and incorporates by reference all of the contents of said Japanese application. [Background technology]

[0002] Patent Document 1 describes a fusion splicing device and a maintenance management method for the fusion splicing device. The fusion splicing device includes a fusion splicing device for fusion splicing optical fibers together, and a data management terminal connected to the fusion splicing device via an I / O cable. The fusion splicing device includes a discharge unit for fusing the optical fibers. The discharge unit has a pair of electrodes arranged opposite to each other on a stage on which the two optical fibers to be fused are placed, and a voltage is applied between the pair of electrodes to generate a discharge and fuse the two optical fibers. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2003-287643 A Summary of the Invention

[0004] A fusion splicing system according to one embodiment includes a fusion splicing device having a first electrode and a second electrode for fusion splicing optical fibers by discharge, and a discharge circuit for outputting a control signal to the first electrode and receiving a feedback signal of the control signal from the second electrode, and a degradation determination unit for determining whether the first electrode and the second electrode have deteriorated based on the state of the feedback signal.

[0005] A fusion splicing device according to one embodiment includes a first electrode and a second electrode that fusion splice optical fibers by discharge, a discharge circuit that outputs a control signal to the first electrode and receives a feedback signal of the control signal from the second electrode, and a signal monitor that monitors the feedback signal and determines whether the first electrode and the second electrode have deteriorated based on the state of the feedback signal.

[0006] A deterioration determination method according to one embodiment is a deterioration determination method for determining whether or not a first electrode and a second electrode that perform fusion splicing of optical fibers by discharge have deteriorated, and includes the steps of outputting a control signal to the first electrode, receiving a feedback signal of the control signal from the second electrode, and determining whether or not the first electrode and the second electrode have deteriorated based on the state of the feedback signal. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is a perspective view showing a fusion splicing apparatus according to an embodiment. [Diagram 2] FIG. 2 is a perspective view of the fusion splicing apparatus of FIG. 1 with the windshield cover open. [Diagram 3] FIG. 3 is a diagram showing a pair of electrodes, a discharge circuit, and a signal monitor of the fusion splicing apparatus of FIG. [Figure 4] FIG. 4 is a schematic diagram showing a control signal and a normal feedback signal monitored by a signal monitor. [Diagram 5] FIG. 5 is a schematic diagram showing a control signal and an abnormal feedback signal monitored by a signal monitor. [Figure 6] FIG. 6 is a block diagram showing a configuration of a fusion splicing system according to an embodiment. [Figure 7] FIG. 7 is a flowchart illustrating an example of steps of a degradation determination method according to an embodiment. [Figure 8] FIG. 8 is a block diagram showing a configuration of a fusion splicing system according to a modified example. [Figure 9] FIG. 9 is a block diagram showing a configuration of a fusion splicing system according to a modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] However, the pair of electrodes of a fusion splicing device may deteriorate after long-term use. For example, repeated fusion discharge may cause the discharge to become unstable due to contamination of the electrodes. One method for determining the deterioration of the electrodes of a fusion splicing device is to use the number of times the electrodes have been used. However, when the deterioration of the electrodes is determined based on the number of times the electrodes have been used, the deterioration of the electrodes may not be determined with high accuracy. Therefore, there is room for improvement in terms of the accuracy of determining the deterioration state of the electrodes.

[0009] An object of the present disclosure is to provide a fusion splicing system, a fusion splicing device, and a degradation determination method that are capable of determining the degradation state of an electrode with high accuracy.

[0010] According to the present disclosure, the deterioration state of an electrode can be determined with high accuracy.

[0011] [Description of the embodiment] First, the embodiments of the present disclosure will be listed and described below. A fusion splicing system according to one embodiment includes a fusion splicing device having a first electrode and a second electrode for fusion splicing optical fibers by discharge, and a discharge circuit for outputting a control signal to the first electrode and receiving a feedback signal of the control signal from the second electrode, and a degradation determination unit for determining whether the first electrode and the second electrode have deteriorated based on the state of the feedback signal.

[0012] A fusion splicing device according to one embodiment includes a first electrode and a second electrode that fusion splice optical fibers by discharge, a discharge circuit that outputs a control signal to the first electrode and receives a feedback signal of the control signal from the second electrode, and a signal monitor that monitors the feedback signal and determines whether the first electrode and the second electrode have deteriorated based on the state of the feedback signal.

[0013] A deterioration determination method according to one embodiment is a deterioration determination method for determining whether or not a first electrode and a second electrode that perform fusion splicing of optical fibers by discharge have deteriorated, and includes the steps of outputting a control signal to the first electrode, receiving a feedback signal of the control signal from the second electrode, and determining whether or not the first electrode and the second electrode have deteriorated based on the state of the feedback signal.

[0014] In the above-mentioned fusion splicing system, fusion splicing device, and deterioration determination method, a control signal is output to the first electrode, and a feedback signal of the control signal is output from the second electrode. Then, it is determined whether the first electrode and the second electrode are deteriorated or not from the state of the feedback signal. Therefore, the feedback signal of the control signal can be effectively used to determine the deterioration of the first electrode and the second electrode. When deterioration occurs in at least one of the first electrode and the second electrode, the feedback signal obtained by outputting the control signal does not follow the control signal. "Following the control signal" indicates, for example, that the value indicated by the feedback signal corresponds to the value indicated by the control signal. For example, when the first electrode and the second electrode are not deteriorated, the value of the feedback signal is a value obtained by reversing the positive and negative of the value of the control signal, and the feedback signal follows the control signal. That is, the value of the feedback signal corresponds to the value of the control signal (for example, the value of the feedback signal is a value obtained by reversing the positive and negative of the value of the control signal). At this time, for example, the waveform of the feedback signal is displayed as a waveform obtained by inverting the waveform of the control signal. "Does not follow" indicates that the value of the feedback signal is a value that does not correspond to the value of the control signal. At this time, for example, the waveform of the feedback signal is displayed as a waveform other than the waveform obtained by inverting the waveform of the control signal. In the fusion splicing system, fusion splicing device, and deterioration determination method described above, the characteristics of the feedback signal are utilized to determine electrode deterioration, so that electrode deterioration determination can be performed easily and with high accuracy.

[0015] The deterioration determination unit may determine whether the first electrode and the second electrode have deteriorated from both the state of the control signal and the state of the feedback signal. In this case, since the state of the feedback signal can be determined in comparison with the state of the control signal, the state of the feedback signal can be determined easily and with higher accuracy. The "state of the signal" indicates the transition of the value indicated by the signal. When the deterioration of the first electrode and the second electrode is determined from both the state of the control signal and the state of the feedback signal as described above, the deterioration determination of the electrodes can be performed with higher accuracy.

[0016] The fusion splicing system, fusion splicing device, and deterioration determination method described above may include a signal determination unit that determines whether each of the multiple feedback signals is abnormal. The deterioration determination unit may determine whether the first electrode and the second electrode are deteriorated based on the number of feedback signals determined to be abnormal by the signal determination unit. In this case, electrode deterioration determination is performed based on the number of feedback signals determined to be abnormal by the signal determination unit, so that electrode deterioration determination can be easily performed. Furthermore, by performing electrode deterioration determination using the result of the signal determination unit's determination of the presence or absence of abnormality for the multiple feedback signals, electrode deterioration determination can be performed with even higher accuracy.

[0017] The deterioration determination unit may determine whether the first electrode and the second electrode have deteriorated based on the state of the voltage value of the feedback signal. In this case, the state of the feedback signal can be determined using a voltage signal that is easy to handle for signal processing. This makes it easier to determine the feedback signal and the deterioration of the electrodes.

[0018] [Details of the embodiment] Specific examples of a fusion splicing system, a fusion splicing device, and a degradation determination method according to an embodiment of the present disclosure will be described. In the description of the drawings, the same or equivalent elements are given the same reference numerals, and duplicated descriptions will be omitted as appropriate. In addition, the drawings may be partially simplified or exaggerated for ease of understanding, and the dimensional ratios and the like are not limited to those shown in the drawings.

[0019] FIG. 1 is a perspective view showing a fusion splicing device 1 according to an embodiment of the present disclosure. FIG. 2 is a perspective view showing a state in which a windshield cover 6 of the fusion splicing device 1 is open. The fusion splicing device 1 is an apparatus for fusion splicing optical fibers together, and includes a box-shaped housing 2. On the upper part of the housing 2, a fusion section 3 for fusing optical fibers together and a heater 4 for heating and shrinking a fiber reinforcement sleeve that is placed over the fusion spliced ​​section of the optical fibers fused at the fusion section 3 are provided. The fusion splicing device 1 includes a monitor 5 for displaying the state of the fusion splicing between the optical fibers photographed by a camera disposed inside the housing 2. Furthermore, the fusion splicing device 1 includes a windshield cover 6 for preventing wind from entering the fusion section 3.

[0020] The fusion splicing unit 3 includes a holder placement portion on which a pair of optical fiber holders 3a can be placed, a pair of fiber positioning portions 3b, and a first electrode 3c1 and a second electrode 3c2 for performing discharge. Each of the first electrode 3c1 and the second electrode 3c2 is also called an electrode rod. Each of the optical fibers to be fused is held by the optical fiber holder 3a, and each optical fiber holder 3a is placed and fixed on the holder placement portion. The fiber positioning portion 3b is disposed between the optical fiber holders 3a, and positions the tip portion of the optical fiber fixed to each optical fiber holder 3a. The first electrode 3c1 and the second electrode 3c2 are disposed between the fiber positioning portions 3b. Each of the first electrode 3c1 and the second electrode 3c2 is an electrode for fusing the tips of the optical fibers together by arc discharge.

[0021] The windshield cover 6 is connected to the housing 2 so as to cover the fusion unit 3 in an openable and closable manner. The windshield cover 6 has a pair of side surfaces 6a. An introduction port 6b is formed on each side surface 6a of the windshield cover 6 for introducing an optical fiber into the fusion unit 3. The optical fiber introduced from the introduction port 6b reaches the optical fiber holder 3a of the fusion unit 3 and is held by the optical fiber holder 3a.

[0022] FIG. 3 is a diagram showing a schematic diagram of a signal circuit for the first electrode 3c1 and the second electrode 3c2. As shown in FIG. 3, the fusion unit 3 further includes a discharge circuit 3d for discharging to the first electrode 3c1 and the second electrode 3c2, a high voltage unit 3f, and a signal monitor 3g for monitoring signals to the first electrode 3c1 and the second electrode 3c2. When the discharge circuit 3d receives a control signal S1 for fusing the optical fiber, it applies a high voltage to the first electrode 3c1 via the high voltage unit 3f. By applying a high voltage to the first electrode 3c1, an arc discharge occurs between the first electrode 3c1 and the second electrode 3c2. With the application of the high voltage to the first electrode 3c1 and the arc discharge, a feedback signal S2 (ignition signal) directed to the discharge circuit 3d is generated from the second electrode 3c2. The signal monitor 3g monitors the feedback signal S2 and the control signal S1 to the discharge circuit 3d.

[0023] 4 is a diagram showing a schematic diagram of the control signal S1 and the feedback signal S2 monitored by the signal monitor 3g. As shown in FIG. 4, the signal monitor 3g includes, for example, an oscilloscope 3h that is a signal display device, and the control signal S1 and the feedback signal S2 are displayed on the oscilloscope 3h. When the first electrode 3c1 and the second electrode 3c2 are in a normal state, the feedback signal S2 quickly follows the output of the control signal S1, and a stable waveform of the feedback signal S2 is obtained in the signal monitor 3g. At this time, the value indicated by the feedback signal S2 corresponds to the value indicated by the control signal S1 (for example, the value indicated by the feedback signal S2 is a value obtained by reversing the positive and negative values ​​of the value indicated by the control signal S1).

[0024] On the other hand, as illustrated in FIG. 5, when at least one of the first electrode 3c1 and the second electrode 3c2 is deteriorated, the feedback signal S2 does not immediately follow the output of the control signal S1. For example, the value indicated by the feedback signal S2 does not become a value obtained by reversing the positive and negative values ​​indicated by the control signal S1. As a specific example, when at least one of the first electrode 3c1 and the second electrode 3c2 is deteriorated, a delay time D of the feedback signal S2 with respect to the control signal S1 occurs. Also, when at least one of the first electrode 3c1 and the second electrode 3c2 is deteriorated, the feedback signal S2 is not stable. For example, the value indicated by the feedback signal S2 temporarily becomes a value that does not correspond to the value indicated by the control signal S1. As a specific example, a fluctuation E (also called fluttering) occurs in the feedback signal S2.

[0025] "Deterioration of electrodes" refers to, for example, aging deterioration of the first electrode 3c1 or the second electrode 3c2. For example, when at least one of the first electrode 3c1 and the second electrode 3c2 deteriorates due to repeated fusion discharge, the arc discharge becomes unstable. Also, "deterioration of electrodes" refers to, for example, deposition of silica, which is a component of optical fiber, on the tip of at least one of the first electrode 3c1 and the second electrode 3c2 after repeated discharge. When at least one of the first electrode 3c1 and the second electrode 3c2 deteriorates, dielectric breakdown is unlikely to occur between the first electrode 3c1 and the second electrode 3c2, and the discharge becomes unstable. As a result, the feedback signal S2 may not follow the control signal S1.

[0026] In the fusion splicing device 1, fusion splicing system 10, and deterioration determination method according to the present embodiment, deterioration of the first electrode 3c1 and the second electrode 3c2 is determined by monitoring the feedback signal S2. The configuration of an exemplary fusion splicing system 10 will be described below with reference to FIG. 6. FIG. 6 is a diagram showing a schematic configuration of the fusion splicing system 10. The fusion splicing system 10 includes the above-mentioned fusion splicing device 1, an information terminal 11, and a server 20.

[0027] The fusion splicing device 1 is configured to be able to communicate with an information terminal 11 by wireless communication. The information terminal 11 is, for example, a terminal owned by a manager of a construction project in which the fusion splicing device 1 is used. The information terminal 11 may be a mobile terminal such as a smartphone or a tablet, or a fixed terminal such as a personal computer. The server 20 is, for example, a management server that manages a plurality of construction projects, and is a computer that can communicate with the fusion splicing device 1 and the information terminal 11 via an information communication network 30 such as the Internet. The fusion splicing device 1 and the information terminal 11 are, for example, located in a place different from the server 20.

[0028] The fusion splicing apparatus 1 may include a computer including hardware such as a CPU, RAM, ROM, an input device, a wireless communication module, an auxiliary storage device, and an output device. These components operate according to programs or the like to realize each function of the fusion splicing apparatus 1. The fusion splicing apparatus 1 transmits, for example, data of the above-mentioned control signal S1 and feedback signal S2 to the server 20. The data of the control signal S1 and feedback signal S2 refer to, for example, data of the control signal S1 and feedback signal S2 converted into voltage values ​​by a signal monitor 3g.

[0029] The server 20 is configured to include a computer including hardware such as a CPU, RAM, ROM, a communication module, and an auxiliary storage device. These components operate according to programs or the like to realize the various functions of the server 20. Functionally, the server 20 includes a signal acquisition unit 21, a signal determination unit 22, and a degradation determination unit 23.

[0030] In the following, an example will be described in which the server 20 includes the signal determination unit 22 and the deterioration determination unit 23. However, instead of the signal determination unit 22 and the deterioration determination unit 23 of the server 20, the fusion splicing apparatus 1 may be provided with a signal determination unit and a deterioration determination unit. Instead of the deterioration determination unit 23, the signal monitor 3g of the fusion splicing apparatus 1 may determine the deterioration of the first electrode 3c1 and the second electrode 3c2.

[0031] The signal acquiring unit 21 acquires data (voltage values) of the control signal S1 and the feedback signal S2 from the fusion splicing device 1. The signal judging unit 22 judges whether or not there is an abnormality in the feedback signal S2 acquired by the signal acquiring unit 21. For example, the signal judging unit 22 judges whether or not the value of the feedback signal S2 corresponds to the value of the control signal S1. As a specific example, the signal judging unit 22 may judge whether or not a fluctuation E occurs in the feedback signal S2. The signal judging unit 22 may also judge whether or not a delay time D of the feedback signal S2 with respect to the control signal S1 is equal to or greater than a certain value. In this case, the signal judging unit 22 may judge the feedback signal S2 to be abnormal if the delay time D is equal to or greater than a certain value, and may judge the feedback signal S2 to be normal if the delay time D is not equal to or greater than a certain value.

[0032] The deterioration determination unit 23 determines whether or not at least one of the first electrode 3c1 and the second electrode 3c2 has deteriorated based on the state of the feedback signal S2. For example, the deterioration determination unit 23 determines that the first electrode 3c1 and the second electrode 3c2 have not deteriorated when the signal determination unit 22 determines that the feedback signal S2 is normal. The deterioration determination unit 23 determines that at least one of the first electrode 3c1 and the second electrode 3c2 has deteriorated when the signal determination unit 22 determines that the feedback signal S2 is abnormal. The deterioration determination unit 23 transmits the result of the determination of whether or not the first electrode 3c1 and the second electrode 3c2 have deteriorated to at least one of the fusion splicing device 1 and the information terminal 11. The determination result of the deterioration determination unit 23 is displayed, for example, on the monitor 5 of the fusion splicing device 1 or the display of the information terminal 11.

[0033] Next, a deterioration determination method according to this embodiment will be described with reference to the flowchart shown in Fig. 7. Fig. 7 is a flowchart showing an example of steps of the deterioration determination method according to this embodiment. First, each of a pair of optical fibers is held by an optical fiber holder 3a, and a control signal is output to the first electrode 3c1 in a state where each optical fiber is positioned by the fiber positioning unit 3b. Then, an arc discharge and fusion splicing of the optical fibers are performed (step T1).

[0034] At this time, the signal monitor 3g monitors the control signal S1 and the feedback signal S2, and the data of the control signal S1 and the feedback signal S2 is transmitted to the server 20. Then, the signal acquisition unit 21 acquires the data of the control signal S1 and the feedback signal S2, and the signal determination unit 22 determines whether or not there is an abnormality in the feedback signal S2. As a specific example, the signal determination unit 22 determines whether or not there is a fluctuation E (fluttering) in the feedback signal S2, and if there is a fluctuation E, determines that the feedback signal S2 is abnormal (step T2).

[0035] If signal determination unit 22 determines that there is a fluctuation in feedback signal S2, it adds 1 to the number of fluctuations (the number of feedback signals S2 determined to be abnormal) (step T3). On the other hand, if signal determination unit 22 determines that there is no fluctuation in feedback signal S2, the process proceeds to step T4. In step T4, deterioration determination unit 23 determines whether the number of discharges has reached n times (n is a natural number). If it is determined that the number of discharges has reached n times, the process proceeds to step T5, and if it is determined that the number of discharges has not reached n times, the process returns to step T1 and discharge, etc. is performed again.

[0036] In step T5, the number of feedback signals S2 determined to be abnormal by signal determination unit 22 is determined by deterioration determination unit 23. As a specific example, deterioration determination unit 23 determines whether the number of times there is a fluctuation in feedback signal S2 is m or more (m is a natural number equal to or less than n). For example, when deterioration determination unit 23 determines that the number of times there is a fluctuation is m or more, it determines that at least one of first electrode 3c1 and second electrode 3c2 is deteriorated (step T6). On the other hand, when deterioration determination unit 23 determines that the number of times there is a fluctuation is not m or more, it determines that first electrode 3c1 and second electrode 3c2 are not deteriorated (step T7).

[0037] After the above determination, for example, the determination result is transmitted to either the information terminal 11 or the fusion splicing device 1, and the determination result is displayed on either the information terminal 11 or the fusion splicing device 1. After that, a series of steps are completed. As an example, the value of m is 4, and the value of n is 10. In this case, if the number of abnormal feedback signals S2 among the obtained 10 feedback signals S2 is 4 or more, it is determined that the first electrode 3c1 and the second electrode 3c2 are deteriorated. As a specific example, if a fluctuation E occurs in the feedback signal S2 four or more times out of 10 discharges, it is determined that at least one of the first electrode 3c1 and the second electrode 3c2 is deteriorated. However, the values ​​of m and n are not limited to the above example and can be changed as appropriate.

[0038] Here, an example of a method for counting the number of feedback signals S2 will be described. Normally, discharge is performed continuously for a predetermined period of time, during which a control signal S1 having a preset pattern is generated continuously. The feedback signals S2 during a series of periods from the start of such discharge (when the control signal S1 for discharge is generated) to the end of discharge are counted together as one feedback signal S2. Other feedback signals S2 during a series of periods from the start of discharge to the end of discharge at other timings are counted together as one feedback signal S2 different from the above. In this case, the number of feedback signals S2 is the same as the number of discharges.

[0039] Next, the effects of the fusion splicing system 10, fusion splicing device 1, and deterioration determination method according to the present embodiment will be described. In the fusion splicing system 10, fusion splicing device 1, and deterioration determination method according to the present embodiment, a control signal S1 is output to the first electrode 3c1, and a feedback signal S2 of the control signal S1 is output from the second electrode 3c2. Then, based on the state of the feedback signal S2, it is determined whether or not at least one of the first electrode 3c1 and the second electrode 3c2 has deteriorated.

[0040] Therefore, the feedback signal S2 of the control signal S1 can be effectively used to determine the first electrode 3c1 and the second electrode 3c2. When degradation occurs in either the first electrode 3c1 or the second electrode 3c2, the feedback signal S2 does not follow the control signal S1 when the control signal S1 is output. In the fusion splicing system 10, the fusion splicing device 1, and the degradation determination method according to the present embodiment, the degradation determination of the first electrode 3c1 and the second electrode 3c2 is performed by utilizing the characteristics of the feedback signal S2, so that the degradation determination of the first electrode 3c1 and the second electrode 3c2 can be performed easily and with high accuracy.

[0041] As described above, the deterioration determination unit 23 may determine whether the first electrode 3c1 and the second electrode 3c2 have deteriorated from both the state of the control signal S1 and the state of the feedback signal S2. In this case, since the state of the feedback signal S2 can be determined in comparison with the state of the control signal S1, the state of the feedback signal S2 can be determined easily and with higher accuracy. Therefore, the deterioration determination of the first electrode 3c1 and the second electrode 3c2 can be performed with higher accuracy.

[0042] The fusion splicing system 10, the fusion splicing device 1, and the deterioration determination method according to the embodiment may include a signal determination unit 22 that determines whether each of the multiple feedback signals S2 is abnormal. The deterioration determination unit 23 may determine whether the first electrode 3b1 and the second electrode 3b2 are deteriorated based on the number of feedback signals S2 determined to be abnormal by the signal determination unit 22. In this case, the electrode deterioration determination is performed based on the number of feedback signals S2 determined to be abnormal by the signal determination unit 22, so that the electrode deterioration determination can be easily performed. Furthermore, the electrode deterioration determination can be performed with higher accuracy by performing the electrode deterioration determination using the result of the signal determination unit 22 determining whether or not there is an abnormality for the multiple feedback signals S2.

[0043] Deterioration determination unit 23 may determine whether first electrode 3c1 and second electrode 3c2 have deteriorated from the state of the voltage value of feedback signal S2. In this case, since the state of feedback signal S2 can be determined using a voltage signal that is easy to handle in signal processing, it is possible to more easily determine feedback signal S2 and electrode deterioration.

[0044] The above describes the embodiments of the fusion splicing system 10, the fusion splicing device 1, and the degradation determination method according to the present disclosure. However, the present invention is not limited to the above-described embodiments. In other words, it will be easily recognized by those skilled in the art that the present invention can be modified and changed in various ways within the scope of the gist of the claims. For example, the configurations of the components of the fusion splicing system and the fusion splicing device can be modified as appropriate, and the contents and order of the steps of the degradation determination method are not limited to the above-described embodiments and can be modified as appropriate.

[0045] For example, in the above-described embodiment, the server 20 includes the signal acquisition unit 21, the signal determination unit 22, and the deterioration determination unit 23, and the deterioration determination unit 23 of the server 20 performs the deterioration determination of the electrode 3c. However, as shown in FIG. 8, the fusion splicing system 40 may include a deterioration determination unit 43 provided separately from the fusion splicing device 41. As shown in FIG. 9, the fusion splicing system 50 may include a fusion splicing device 51 including a deterioration determination unit 53. Furthermore, as described above, the fusion splicing device 1 may include the signal determination unit and the deterioration determination unit, or the information terminal 11 may include the signal determination unit and the deterioration determination unit. In this way, the locations of the signal determination unit and the deterioration determination unit can be changed as appropriate. For example, when the fusion splicing device 1 includes the signal determination unit and the deterioration determination unit, the information terminal 11 and the server 20 can be eliminated.

[0046] In the above-described embodiment, an example has been described in which the deterioration of the first electrode 3c1 and the second electrode 3c2 is determined from the state of the voltage value of the feedback signal S2. However, the deterioration of the first electrode 3c1 and the second electrode 3c2 may be determined from the current value of the feedback signal S2. That is, the signal monitor 3g may monitor the current value of the control signal S1 and the current value of the feedback signal S2, and the deterioration of the first electrode 3c1 and the second electrode 3c2 may be determined based on these current values. The current value has the advantage that it is easier to detect minute changes than the voltage value.

[0047] In the above-described embodiment, an example has been described in which the determination result of the first electrode 3c1 and the second electrode 3c2 by the deterioration determination unit 23 is displayed. However, the discharge power for the first electrode 3c1 and the second electrode 3c2 may be strengthened after it is determined that at least one of the first electrode 3c1 and the second electrode 3c2 is deteriorated. In this case, the strong discharge power for the first electrode 3c1 and the second electrode 3c2 can clean (evaporate) silica or the like attached to the first electrode 3c1 or the second electrode 3c2, which contributes to suppressing the progress of deterioration.

[0048] In the above-described embodiment, an example has been described in which deterioration of the first electrode 3c1 and the second electrode 3c2 is determined based on the presence or absence of a fluctuation E in the feedback signal S2. However, for example, deterioration of the first electrode 3c1 and the second electrode 3c2 may be determined based on a delay time D of the feedback signal S2 relative to the control signal S1. Also, it may be determined that the first electrode 3c1 and the second electrode 3c2 have deteriorated when the fluctuation E occurs multiple times in the feedback signal S2. In this way, the method of determining deterioration of the first electrode 3c1 and the second electrode 3c2 from the feedback signal S2 is not limited to the above-described embodiment and can be modified as appropriate.

[0049] In the above embodiment, the feedback signals S2 in a series of periods from the start of discharge to the end of discharge are counted as 1, but the series of periods from the start of discharge to the end of discharge may be divided into a predetermined time interval, and the feedback signals S2 may be counted as 1 for each divided period. For example, the discharge time may be 10 seconds, the time interval may be 2 seconds, the feedback signal S2 in a first period from the start of discharge to 2 seconds may be counted as 1, and the feedback signal S2 in a second period from 2 seconds after the start of discharge to 4 seconds after the start of discharge may be counted as another 1. In this case, the number of divided periods in one discharge is 5, and the number of feedback signals S2 is 5. Furthermore, the above counting method and the above counting method may be mixed. For example, the time interval is T, and if the series of times from the start of discharge to the end of discharge is T or less, the feedback signals S2 from the start of discharge to the end of discharge may be counted as 1, and if the series of times from the start of discharge to the end of discharge is greater than T, the feedback signals S2 in the periods divided by the time interval T may be counted as 1.

[0050] In the above-described embodiment, the deterioration judgment of the first electrode 3c1 and the second electrode 3c2 was performed based on the discharge state when actually performing fusion splicing of the optical fiber, but the deterioration judgment may also be performed when discharging in the absence of optical fiber, i.e., when a so-called discharge test is performed, and any state in which discharging occurs may be included in the judgment subject. [Explanation of symbols]

[0051] 1...Fusion splicer 2. Housing 3…Fused part 3a...Optical fiber holder 3b…Fiber positioning part 3c1…1st electrode 3c2…Second electrode 3d…discharge circuit 3f…High voltage unit 3g…signal monitor 3h…Oscilloscope 4...heater 5. Monitor 6…Windshield cover 6a...side 6b... Introduction 10...Fusion splicing system 11. Information terminal 20…Server 21…Signal acquisition section 22...Signal judgment section 23…Deterioration determination section 30…Information and communication network D…Delay time E…Fluctuation

Claims

1. A first electrode and a second electrode for fusion splicing the optical fibers by discharge; a discharge circuit that outputs a control signal to the first electrode and receives a feedback signal of the control signal from the second electrode; a deterioration determination unit that determines whether the first electrode and the second electrode have deteriorated based on a state of the feedback signal; a signal determination unit that determines whether or not each of the plurality of feedback signals is abnormal, the deterioration determination unit determines whether the first electrode and the second electrode are deteriorated based on a number of the feedback signals determined to be abnormal by the signal determination unit; after it is determined that at least one of the first electrode and the second electrode is deteriorated, increasing a discharge power for the first electrode and the second electrode in order to clean the first electrode and the second electrode; Fusion splicing system.

2. A first electrode and a second electrode for fusion splicing the optical fibers by discharge; a discharge circuit that outputs a control signal to the first electrode and receives a feedback signal of the control signal from the second electrode; a deterioration determination unit that determines whether the first electrode and the second electrode have deteriorated based on a state of the feedback signal; Equipped with the deterioration determination unit determines whether the first electrode and the second electrode have deteriorated based on a state of a voltage value of the feedback signal; after it is determined that at least one of the first electrode and the second electrode is deteriorated, increasing a discharge power for the first electrode and the second electrode in order to clean the first electrode and the second electrode; Fusion splicing system.

3. A first electrode and a second electrode for fusion splicing the optical fibers by discharge; a discharge circuit that outputs a control signal to the first electrode and receives a feedback signal of the control signal from the second electrode; a deterioration determination unit that determines whether the first electrode and the second electrode have deteriorated based on a state of the feedback signal; Equipped with a deterioration determination is performed on the first electrode and the second electrode based on a current value of the feedback signal; after it is determined that at least one of the first electrode and the second electrode is deteriorated, increasing a discharge power for the first electrode and the second electrode in order to clean the first electrode and the second electrode; Fusion splicing system.

4. A first electrode and a second electrode for fusion splicing the optical fibers by discharge; a discharge circuit that outputs a control signal to the first electrode and receives a feedback signal of the control signal from the second electrode; a deterioration determination unit that determines whether the first electrode and the second electrode have deteriorated based on a state of the feedback signal; Equipped with determining deterioration of the first electrode and the second electrode based on a delay time of the feedback signal relative to the control signal; after it is determined that at least one of the first electrode and the second electrode is deteriorated, increasing a discharge power for the first electrode and the second electrode in order to clean the first electrode and the second electrode; Fusion splicing system.

5. A first electrode and a second electrode for fusion splicing the optical fibers by discharge; a discharge circuit that outputs a control signal to the first electrode and receives a feedback signal of the control signal from the second electrode; a deterioration determination unit that determines whether the first electrode and the second electrode have deteriorated based on a state of the feedback signal; Equipped with When the feedback signal fluctuates a plurality of times, it is determined that the first electrode and the second electrode are deteriorated; after it is determined that at least one of the first electrode and the second electrode is deteriorated, increasing a discharge power for the first electrode and the second electrode in order to clean the first electrode and the second electrode; Fusion splicing system.

6. the deterioration determination unit determines whether or not the first electrode and the second electrode have deteriorated based on both a state of the control signal and a state of the feedback signal. The fusion splicing system according to any one of claims 1 to 5.

7. The signal determination unit determines that the feedback signal is abnormal when the delay time is equal to or greater than a certain value, The signal determination unit determines that the feedback signal is normal when the delay time is not equal to or greater than the certain value.

2. The fusion splicing system of claim 1.

8. the deterioration determination unit determines that at least one of the first electrode and the second electrode is deteriorated when the feedback signal is determined to be abnormal by the signal determination unit.

2. The fusion splicing system of claim 1.

9. the deterioration determination unit transmits a result of the determination of the deterioration of the first electrode and the second electrode to at least one of the fusion splicing device and an information terminal. The fusion splicing system according to any one of claims 1 to 5.

10. the determination result of the deterioration determination unit is displayed on a monitor of the fusion splicing device or on a display of the information terminal.

10. The fusion splicing system of claim 9.

11. The signal determination unit determines whether or not the feedback signal fluctuates, and if the feedback signal fluctuates, determines that the feedback signal is abnormal.

2. The fusion splicing system of claim 1.

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