Optical cable interruption alarm device of underground coal mine safety monitoring system

Abstract

An optical cable interruption alarm device of an underground coal mine safety monitoring system comprises an induction assembly and a warning assembly. The sensing assembly comprises an optical sensor, and the optical sensor is close to and faces a state indicator lamp of the photoelectric converter for the optical cable; the warning assembly comprises a light-operated switch, the signal input end of the light-operated switch is electrically connected with the light sensor through a connecting cable, the control output end of the light-operated switch is electrically connected with an audible and visual alarm through an output line, and a manual switch is arranged on the output line. The utility model provides an optical cable interruption alarm device for an underground coal mine safety monitoring system, which can quickly give an audible and visual alarm to a manager when an underground coal mine signal transmission optical cable has an interruption fault, and can cut off the audible and visual alarm in the process of maintaining the optical cable by the manager. And continuous interference of an audible and visual alarm is avoided.

Description

Technical Field

[0001] This utility model relates to the field of underground safety monitoring technology in coal mines, specifically to an optical cable interruption alarm device for an underground safety monitoring system in coal mines. Background Technology

[0002] Coal mines have a unique production environment with numerous potential safety hazards, and accidents can cause significant losses. Therefore, modern coal mines install various safety monitoring facilities underground to monitor the situation in real time. Currently, underground safety monitoring data in coal mines is primarily transmitted via fiber optic cables. However, the complex environment of underground coal mines sometimes leads to fiber optic cable breaks, causing data transmission interruptions. Currently, fiber optic cable breaks are mainly identified after data loss is detected in the upper-level system, requiring monitoring personnel to notify fiber optic cable managers. This lack of timeliness results in lengthy repair times for fiber optic cable breaks. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a fiber optic cable interruption alarm device for a coal mine underground safety monitoring system. This device can quickly send an audible and visual alarm to management personnel when a signal transmission fiber optic cable in the coal mine experiences an interruption fault. Furthermore, the device can be disconnected during the maintenance of the fiber optic cable by management personnel to avoid continuous interference from the audible and visual alarm.

[0004] To achieve the above objectives, the specific solution adopted by this utility model is as follows: a fiber optic cable interruption alarm device for a coal mine underground safety monitoring system, comprising a sensing component and an alarm component;

[0005] The sensing component includes a light sensor that is close to and toward a status indicator light of the optical fiber photoelectric converter.

[0006] The warning component includes a light control switch. The signal input terminal of the light control switch is electrically connected to the light sensor via a connecting cable. The control output terminal of the light control switch is electrically connected to an audible and visual alarm via an output line, and a manual switch is provided on the output line.

[0007] As a further optimization of the above-mentioned optical cable interruption alarm device for underground safety monitoring system in coal mines: the output line includes a positive line and a negative line, and the manual switch is connected to the positive line, which can turn the positive line on or off.

[0008] As a further optimization of the above-mentioned optical cable interruption alarm device for underground safety monitoring system in coal mines: the connecting cable includes a central rod and a flexible sleeve that is slidably sleeved on the central rod, wherein a wire passage extending along the length direction of the central rod is opened in the middle of the central rod, and a data line is provided in the wire passage. One end of the data line is connected to a first connector for connecting the optical sensor, and the other end of the data line is connected to a second connector for connecting the optical control switch.

[0009] As a further optimization of the above-mentioned optical cable interruption alarm device for underground safety monitoring system in coal mines: an internally threaded pipe is fixedly installed on the inner wall of the flexible sleeve, and a connecting block is threadedly connected to the internally threaded pipe, with the first joint fixedly installed on the connecting block.

[0010] As a further optimization of the above-mentioned optical cable interruption alarm device for underground safety monitoring system in coal mines: multiple guide grooves extending along the length of the central rod are opened on the outer peripheral side wall of the central rod, and multiple metal strips are fixedly connected to the connecting block, with the metal strips correspondingly inserted into the guide grooves.

[0011] As a further optimization of the above-mentioned optical cable interruption alarm device for underground safety monitoring system in coal mines: multiple guide grooves are evenly distributed along the circumference of the central rod.

[0012] As a further optimization of the above-mentioned optical cable interruption alarm device for underground safety monitoring system in coal mines: the flexible sleeve is connected to the metal strip by a connecting bolt, and the connecting bolt extends into the guide groove.

[0013] As a further optimization of the above-mentioned optical cable interruption alarm device for underground safety monitoring system in coal mines: the central rod is threadedly connected to the housing of the light control switch.

[0014] As a further optimization of the above-mentioned optical cable interruption alarm device for underground safety monitoring system in coal mines: the manual switch is set as a rotary switch.

[0015] Beneficial effects: This utility model can quickly provide audible and visual alarms to management personnel when the signal transmission optical cable in the coal mine is interrupted, and can also disconnect the audible and visual alarms during the maintenance of the optical cable by management personnel to avoid continuous interference from the audible and visual alarms. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a structural diagram of the connecting cable;

[0018] Figure 3 yes Figure 2 Enlarged view of part A in the middle.

[0019] Figure description: 1-Photoelectric converter, 2-Status indicator light, 3-Optical cable, 4-Optical sensor, 5-Connecting cable, 6-Photoelectric control switch, 7-Power supply terminal, 8-Output terminal, 9-Output line, 10-Power receiving terminal, 11-Audible and visual alarm, 12-Manual switch, 13-Center rod, 14-Wire passage, 15-Guide groove, 16-Flexible sleeve, 17-Connecting bolt, 18-Internal threaded tube, 19-Connecting block, 20-First connector, 21-Metal strip, 22-Data cable, 23-Second connector. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figures 1 to 3 As shown, a fiber optic cable interruption alarm device for a coal mine underground safety monitoring system includes a sensing component and an alarm component.

[0022] The sensing component includes a light sensor 4, which is close to and toward the status indicator light 2 of the optical fiber photoelectric converter 1.

[0023] The warning component includes a light control switch 6. The signal input terminal of the light control switch 6 is electrically connected to the light sensor 4 via a connecting cable 5. The control output terminal of the light control switch 6 is electrically connected to an audible and visual alarm 11 via an output line 9, and a manual switch 12 is provided on the output line 9.

[0024] In use, the sensing component is placed to the side of the photoelectric converter 1, and the photosensitive sensor 4 is adjusted to be close to and facing the status indicator light 2 of the photoelectric converter 1, so that the light emitted when the status indicator light 2 is lit can illuminate the photosensitive sensor 4. Under normal conditions, the status indicator light 2 is constantly lit, the photosensitive sensor 4 continuously generates an electrical signal, and the light control switch 6 remains in the closed state, thus keeping the audible and visual alarm 11 also in the closed state. On the other hand, the manual switch 12 also remains in the closed state. When the optical cable 3 is disconnected, the status indicator light 2 goes out, the electrical signal generated by the photosensitive sensor 4 is interrupted, the light control switch 6 switches to the conducting state, thereby powering on the audible and visual alarm 11 and providing an audible and visual alarm to the personnel in charge of the optical cable 3, reminding them to handle the optical cable 3 interruption fault in a timely manner. When the personnel receive the audible and visual alarm, they can adjust the manual switch 12 to the open state, thereby cutting off the power supply to the audible and visual alarm 11, terminating the audible and visual alarm, and avoiding continuous interference from the audible and visual alarm 11 when handling the optical cable 3 interruption fault.

[0025] In addition, the normal state of the optical sensor 4 and the optical control switch 6 depends on the status indicator 2 of the photoelectric converter 1. If the normal state of the status indicator 2 is off and it only lights up when the optical cable 3 is interrupted, then the normal state of the optical sensor 4 is no signal. The optical control switch 6 remains in the off state when the optical sensor 4 has no signal. When the status indicator 2 lights up and the optical sensor 4 generates a signal, the optical control switch 6 switches to the on state.

[0026] It should also be noted that the structure and working principle of the photoelectric converter 1 and the status indicator light 2, the model and sensing principle of the light sensor 4, and the structure and working principle of the light control switch 6 are all conventional technical means in this field, and will not be described in detail here.

[0027] The manual switch 12 is specifically connected as follows: the output line 9 includes a positive line and a negative line, and the manual switch 12 is connected to the positive line. The manual switch 12 can connect or disconnect the positive line. Under normal conditions, the manual switch 12 remains in the closed state. When the light control switch 6 switches to the on state, it can supply power to the audible and visual alarm 11, causing the audible and visual alarm 11 to provide an audible and visual alarm to the management personnel. When the management personnel adjust the manual switch 12 to the off state, the positive line is cut off, and the light control switch 6 can no longer supply power to the audible and visual alarm 11, thereby terminating the audible and visual alarm 11. In one embodiment of this utility model, the manual switch 12 is set as a rotary switch. Based on this, the light control switch 6 is provided with two power supply terminals 7 for connecting to an external power source and two output terminals 8 for supplying power to the audible and visual alarm 11. The audible and visual alarm 11 is provided with two power receiving terminals 10 corresponding to the output terminals 8.

[0028] Considering the complex downhole environment, the installation position of the photoelectric converter 1 is not fixed and may need to be adjusted according to the actual situation. To ensure that the photosensitive sensor 4 can be close to and face the status indicator light 2, the connecting cable 5 includes a central rod 13 and a flexible sleeve 16 slidably sleeved on the central rod 13. The central rod 13 is threadedly connected to the housing of the photoelectric switch 6. A wire channel 14 extending along the length of the central rod 13 is opened in the middle of the central rod 13. A data line 22 is installed in the wire channel 14. One end of the data line 22 is connected to a first connector 20 for connecting the photosensitive sensor 4, and the other end of the data line 22 is connected to a second connector 23 for connecting the photoelectric switch 6. In this connecting cable 5, the overall length of the connecting cable 5 can be adjusted by sliding the flexible sleeve 16, thereby adjusting the distance between the photosensitive sensor 4 and the photoelectric switch 6 to ensure that the photosensitive sensor 4 can be close to the status indicator light 2. Furthermore, the flexible sleeve 16 can deform, thereby changing the orientation of the photosensitive sensor 4 by adjusting the flexible sleeve 16 to ensure that the photosensitive sensor 4 faces the status indicator light 2. It should be noted that the total length of the data cable 22 should exceed the sum of the lengths of the center rod 13 and the flexible sleeve 16 to ensure that the data cable 22 is not damaged during the adjustment of the position of the optical sensor 4. In this invention, the flexible sleeve 16 can be made of rubber. It should also be noted that the types of the first connector 20 and the second connector 23 can be determined according to the actual models of the optical sensor 4 and the light control switch 6, which will not be elaborated here.

[0029] The specific connection method between the first connector 20 and the flexible sleeve 16 is as follows: an internally threaded tube 18 is fixedly installed on the inner wall of the flexible sleeve 16, and a connecting block 19 is threadedly connected to the internally threaded tube 18. The first connector 20 is fixedly installed on the connecting block 19.

[0030] To prevent the flexible sleeve 16 from twisting during adjustment, which could cause the data cable 22 to twist and reduce its lifespan, multiple guide grooves 15 extending along the length of the central rod 13 are formed on the outer peripheral sidewall of the central rod 13. These guide grooves 15 are evenly distributed along the circumference of the central rod 13. Multiple metal strips 21 are fixedly connected to the connecting block 19 and are inserted into the guide grooves 15. The metal strips 21 and the guide grooves 15 work together to restrict the flexible sleeve 16, preventing its twisting from causing the data cable 22 to twist as well. Furthermore, the metal strips 21 deform synchronously with the flexible sleeve 16 during adjustment, ultimately supporting the adjusted sleeve and ensuring the stable position of the optical sensor 4.

[0031] To prevent the flexible sleeve 16 from completely detaching from the central rod 13, a distance is left between the end of the guide groove 15 and the end of the central rod 13; that is, the guide groove 15 does not extend to the end of the central rod 13. The flexible sleeve 16 is connected to the metal strip 21 by a connecting bolt 17, and the connecting bolt 17 extends into the guide groove 15. The cooperation between the guide groove 15 and the connecting bolt 17 restricts the sliding range of the flexible sleeve 16, preventing it from completely separating from the central rod 13.

[0032] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fiber optic cable interruption alarm device for a coal mine underground safety monitoring system, characterized in that, It includes a sensing component and an alarm component; the sensing component includes a light sensor (4), which is close to and toward the status indicator (2) of the optical fiber photoelectric converter (1); The warning component includes a light control switch (6), the signal input end of the light control switch (6) is electrically connected to the light sensor (4) through a connecting cable (5), the control output end of the light control switch (6) is electrically connected to an audible and visual alarm (11) through an output line (9), and a manual switch (12) is provided on the output line (9).

2. The optical cable interruption alarm device for a coal mine underground safety monitoring system as described in claim 1, characterized in that, The output line (9) includes a positive line and a negative line. The manual switch (12) is connected to the positive line and can turn the positive line on or off.

3. The optical cable interruption alarm device for a coal mine underground safety monitoring system as described in claim 1, characterized in that, The connecting cable (5) includes a central rod (13) and a flexible sleeve (16) slidably sleeved on the central rod (13). A wire channel (14) extending along the length of the central rod (13) is provided in the middle of the central rod (13). A data line (22) is provided in the wire channel (14). One end of the data line (22) is connected to a first connector (20) for connecting the optical sensor (4), and the other end of the data line (22) is connected to a second connector (23) for connecting the light control switch (6).

4. The optical cable interruption alarm device for a coal mine underground safety monitoring system as described in claim 3, characterized in that, The inner wall of the flexible sleeve (16) is fixedly provided with an internally threaded tube (18), and the internally threaded tube (18) is threadedly connected to a connecting block (19). The first connector (20) is fixedly provided on the connecting block (19).

5. The optical cable interruption alarm device for a coal mine underground safety monitoring system as described in claim 4, characterized in that, Multiple guide grooves (15) extending along the length of the central rod (13) are provided on the outer peripheral sidewall of the central rod (13). Multiple metal strips (21) are fixedly connected to the connecting block (19), and the metal strips (21) are inserted into the guide grooves (15) respectively.

6. The optical cable interruption alarm device for a coal mine underground safety monitoring system as described in claim 5, characterized in that, The multiple guide grooves (15) are evenly distributed along the circumferential direction of the central rod (13).

7. The optical cable interruption alarm device for a coal mine underground safety monitoring system as described in claim 5, characterized in that, The flexible sleeve (16) is connected to the metal strip (21) by a connecting bolt (17), and the connecting bolt (17) extends into the guide groove (15).

8. The optical cable interruption alarm device for a coal mine underground safety monitoring system as described in claim 3, characterized in that, The central rod (13) is threadedly connected to the housing of the light-controlled switch (6).

9. The optical cable interruption alarm device for a coal mine underground safety monitoring system as described in claim 1, characterized in that, The manual switch (12) is configured as a rotary switch.

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