Automatic warning device and method for preventing mistaken entering in electrified area

Abstract

The invention relates to the technical field of electrified early warning equipment, in particular to an automatic warning device and method for preventing mistaken entering in an electrified area, and the warning device comprises a detection base which is fixedly wound around the electrified area, a plurality of column strips are fixedly arranged on the detection base, and an optical fiber channel is formed between every two column strips. An elastic rubber plate is arranged above the optical fiber channel; the vibration detection mechanism comprises a plurality of vibration optical fibers arranged in the optical fiber channel, each vibration optical fiber is suspended below the elastic rubber plate above the vibration optical fiber, and the vibration optical fibers are electrically connected with the control device; and the warning module is electrically connected with the control device and is used for sending out warning prompt information when the vibration optical fiber detects vibration. According to the warning device, applicability setting can be accurately carried out according to the discharging safety distance of the electrified area, and the prevention and control effect is accurate and reliable; the vibration optical fiber is arranged below the elastic rubber plate and is not easily influenced by severe weather such as rain, snow and wind.

Description

Technical Field

[0001] The present application relates to the technical field of live warning equipment, and in particular to an automatic warning device and method for preventing accidental entry into a live area. Background Art

[0002] The statements in this section merely provide background technical information related to the present application and do not necessarily constitute prior art.

[0003] In the prior art, detection and warning of live areas are often limited to certain areas, and it is difficult to provide a 360-degree warning around the live area. Even if a 360-degree warning is provided, a large amount of detection equipment is required, and most protection is provided by external personnel carrying equipment for live detection. However, it is not safe to use equipment for live detection carried by external personnel. First, when live electricity is detected, the personnel may have entered the safe distance for electric shock. On the other hand, the external personnel may have just passed by the discharge area and accidentally entered the safe distance for electric shock. In addition, there are also disadvantages in setting up warning equipment in live areas: first, the detection area is small; second, it is difficult to provide accurate warnings within the safe distance for electric shock; third, warning equipment is often set up in the open air and is easily affected by bad weather such as rain, snow, and wind.

[0004] In view of this, it is necessary to provide an automatic warning device and method for preventing accidental entry into an electric area to solve the above technical problems. Summary of the invention

[0005] Based on this, in order to solve the above technical problems, the present application provides an automatic warning device and method for preventing accidental entry into an electrically charged area.

[0006] The technical solution adopted by this application to solve the problems existing in the prior art is: This application proposes an automatic warning device to prevent accidental entry into live areas. include: A detection base, the detection base is fixedly arranged around the electrified area; a plurality of columns are fixedly arranged on the detection base, and optical fiber channels are respectively formed between two columns; an elastic rubber plate is arranged above the optical fiber channel and between two columns; The vibration detection mechanism includes a plurality of vibration optical fibers arranged in the optical fiber channel, each vibration optical fiber is suspended below the elastic rubber plate above it through a plurality of pull rods; the vibration optical fiber is electrically connected to the control device; A warning module, electrically connected to the control device, for issuing a warning message when the vibrating optical fiber detects vibration; The control device is electrically connected to an external power source.

[0007] Preferably, An upper conductive plate is fixedly provided below each vibrating optical fiber, and a lower conductive plate cooperating with the upper conductive plate is fixedly provided at the bottom of the optical fiber channel; The upper conductive plate and the lower conductive plate are both electrically connected to the alarm, and the alarm is electrically connected to the control device; when the upper conductive plate contacts the lower conductive plate, the alarm sends out vibration optical fiber abnormality alarm information.

[0008] Preferably, The elastic rubber plate is fixed with fillets on both sides, and a plug plate is fixed under each fillet; The column bar is provided with a slot matched with the plug board and a groove matched with the fillet strip; when the plug board is inserted into the slot, the fillet strip is embedded in the groove, and the elastic rubber plate is fixed above the optical fiber channel.

[0009] Preferably, The elastic rubber plate is in an arc-shaped structure, and when fixed above the optical fiber channel, the middle part thereof bulges upward.

[0010] Preferably, A sleeve ring is fixedly arranged below the pull rod, and the vibration optical fiber is sleeved in the sleeve ring.

[0011] Preferably, The elastic rubber plate, the fillet, the pull rod and the ring are all made of rubber and are integrally formed.

[0012] Preferably, The distance between the center lines of the elastic rubber plates is less than 10 cm; The number of the columns is such that the distance between the center lines of the two elastic rubber plates on both sides is greater than the stride length of an adult.

[0013] Preferably, The top plane of the column is parallel to the ground.

[0014] Preferably, The upper conductive plate is in an arc-shaped structure, and a plurality of hanging rings are fixedly arranged above the upper conductive plate, and the upper conductive plate is hung below the vibrating optical fiber through the hanging rings; The bottom of the optical fiber channel is provided with slots on the columns on both sides, and the two sides of the lower conductive plate are respectively arranged in the slots on both sides.

[0015] An automatic warning method for preventing accidental entry into a live area, based on the above-mentioned automatic warning device for preventing accidental entry into a live area: The following steps are involved: Step 1: Plan a protection path around the live area. The distance between the protection path and the closest point of the live area is greater than the safe distance for electric shock. Step 2: Install the above-mentioned automatic warning device for preventing accidental entry into the live area on the protection path; Step 3: Connect the control device to the external power supply; the automatic warning device for preventing accidental entry into the live area starts to automatically warn the personnel who have accidentally entered the live area, wherein: When any vibrating optical fiber detects vibration, the control device controls the warning module to issue a warning prompt message on site; When the alarm sends out an alarm message of abnormal vibration of optical fiber, the control device sends the alarm message to the staff.

[0016] Compared with the prior art, the beneficial effects of this application are: 1. The detection range is wide, and anyone entering the charged area from any position around the charged area can be detected.

[0017] 2. Simple structure and easy installation. When installing, you only need to fix the detection base on the ground, and then buckle the elastic rubber plate with the vibration optical fiber on top of it.

[0018] 3. Maintenance is convenient, and the automatic warning to prevent accidental entry will not be delayed during maintenance.

[0019] 4. The vibration optical fiber is set under the elastic rubber plate, which has a good detection environment, is not easily affected by bad weather such as rain, snow, wind, etc., and has a long service life.

[0020] 5. It can accurately set the applicability based on the discharge safety distance of the charged area, and the prevention and control effect is accurate and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings in the specification, which constitute a part of the present application, are used to provide further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0022] Figure 1 This is a schematic diagram of the overall structure of a first embodiment of an automatic warning device for preventing accidental entry into a live area of ​​the present application; Figure 2 for Figure 1 A schematic cross-sectional structure diagram of a detection base of a first embodiment of an automatic warning device for preventing accidental entry into a live area of ​​the present application; Figure 3 This is a schematic diagram of the internal cross-sectional structure of a detection base of a second embodiment of an automatic warning device for preventing accidental entry into a live area of ​​the present application; Figure 4 for Figure 3 A partial enlarged view of the middle A area; Figure 5 This is a schematic diagram of the electrical connection principle of an alarm of an automatic warning device for preventing accidental entry into an electrically charged area according to the present application.

[0023] In the figure: 1. Detection base, 2. Control device, 3. Elastic rubber plate, 30. Welt, 31. Limit strip, 32. Insert plate, 4. Pull rod, 40. Ring, 5. Vibrating optical fiber, 6. Upper conductive plate, 60, hanging ring, 601, first upper conductive plate, 602, second upper conductive plate, 603, third upper conductive plate, 604, fourth upper conductive plate, 7. Lower conductive plate, 701. first lower conductive plate, 702. second lower conductive plate, 703. third lower conductive plate, 704. fourth lower conductive plate, 8. Notch, 9. Column, 10. Fiber optic channel, 11. Ground. DETAILED DESCRIPTION

[0024] The present application is further described below in conjunction with the accompanying drawings and embodiments.

[0025] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0026] In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present disclosure, and do not specifically refer to any part or element in the present disclosure and should not be understood as limitations on the present disclosure.

[0027] The first embodiment of the automatic warning device for preventing accidental entry into a live area of ​​the present application is as follows: Figure 1 as well as Figure 2 ,include: A detection base 1 is fixedly arranged around the live area; a plurality of columns 9 are fixedly arranged on the detection base 1, and optical fiber channels 10 are formed between two columns 9 respectively; an elastic rubber plate 3 is arranged between two columns 9 above the optical fiber channels 10; in the first embodiment, the detection base 1 is a circular structure, which is suitable for most places with relatively regular live areas, and the distance between the detection base 1 and the closest point of the live area is greater than the electric shock safety distance corresponding to the live area on site; the top plane of the column 9 is parallel to the ground 11; The vibration detection mechanism includes a plurality of vibration optical fibers 5 arranged in the optical fiber channel 10, each vibration optical fiber 5 is suspended below the elastic rubber plate 3 above it through a plurality of pull rods 4; the vibration optical fiber 5 is electrically connected to the control device 2; the elastic rubber plate 3 is an arc-shaped structure, and when fixed above the optical fiber channel 10, the middle part thereof bulges upward. A through hole for passing a cable is provided at the bottom of the detection base 1 below each optical fiber channel 10, and the connecting cable between the control device 2 and the vibration optical fiber 5 is electrically connected through the through hole; an optical fiber coupler and a photodetector are provided in the control device 2, and the optical fiber coupler couples into the vibration optical fiber 5 in the forward and reverse directions respectively, forming a forward and reverse loop Mach-Zehnder interference optical signal; when the optical fiber is disturbed by external vibration, the phase of the light wave in the optical fiber transmission will change, forming an optical signal phase modulation sensing signal based on double-loop Mach-Zehnder interference, and these signals are transmitted to the photodetector through the optical fiber coupler, and the photodetector converts the signal into an electrical signal to realize vibration detection; The warning module is electrically connected to the control device 2 and is used to issue a warning prompt message when the vibrating optical fiber 5 detects vibration; the control device 2 is electrically connected to an external power supply.

[0028] In this embodiment, the distance between the center lines of the elastic rubber plates 3 is less than 10 cm. The purpose of this design is that the distance between the center lines of the elastic rubber plates 3 is less than the foot length of the on-site staff or outsiders. As long as someone steps on this area, the sole of his shoe will inevitably step on at least one elastic rubber plate 3. In addition, the number of columns 9 satisfies that the distance between the center lines of the two elastic rubber plates 3 on both sides is greater than the stride length of an adult. The purpose of this design is to set up multiple elastic rubber plates 3, that is, to set up multiple vibration optical fibers 5, to ensure that the on-site staff or outsiders cannot cross the area in one step. That is, as long as someone enters this area, he will inevitably step on the elastic rubber plate 3.

[0029] refer to Figure 2 When the elastic rubber plate 3 is stepped on, the vibrating optical fiber 5 suspended in the optical fiber channel 10 will be driven to vibrate. At this time, it is detected that someone is about to enter or leave the charged area, and the control device 2 issues a warning message; It should be noted that the warning prompt information issued by the control device 2 is issued on-site, that is, the personnel on-site can hear or see it. In some embodiments, the warning prompt information is a sound prompt; In addition, the control device 2 will also issue a warning prompt message when leaving the live area. Generally, the person leaving the live area is the staff who has completed the maintenance of the live area. The purpose of this situation is to facilitate the staff to check the quality of the automatic warning device to prevent accidental entry into the live area. If there is a warning prompt message, it proves that the automatic warning device to prevent accidental entry into the live area is normal, otherwise it needs to be inspected and repaired.

[0030] In order to further ensure that the staff can check the quality of the automatic warning device to prevent accidental entry into the live area, refer to Figure 2 , an upper conductive plate 6 is fixedly provided under each vibrating optical fiber 5, and a lower conductive plate 7 cooperating with the upper conductive plate 6 is fixedly provided at the bottom of the optical fiber channel 10; the upper conductive plate 6 and the lower conductive plate 7 are both electrically connected to the alarm, and the alarm is electrically connected to the control device 2; when the upper conductive plate 6 contacts the lower conductive plate 7, the alarm sends out an abnormal alarm message of the vibrating optical fiber. Obviously, when the vibrating optical fiber 5 is not suspended in the air, its detection effect is bound to be affected. This design is to ensure that the vibrating optical fiber 5 is in a suspended state. The upper conductive plate 6 is an arc-shaped structure, and a plurality of hanging rings 60 are fixedly provided above the upper conductive plate 6. The upper conductive plate 6 is hung under the vibrating optical fiber 5 through the hanging rings 60; slots 8 are provided on the columns 9 on both sides of the bottom of the optical fiber channel 10, and the two sides of the lower conductive plate 7 are respectively arranged in the slots 8 on both sides.

[0031] refer to Figure 5In some embodiments, four optical fiber channels 10 are provided, and the upper conductive plate 6 includes a first upper conductive plate 601, a second upper conductive plate 602, a third upper conductive plate 603 and a fourth upper conductive plate 604 which are provided below the vibrating optical fiber 5 in different optical fiber channels 10; the lower conductive plate 7 includes a first lower conductive plate 701, a second lower conductive plate 702, a third lower conductive plate 703 and a fourth lower conductive plate 704 which correspond to the first upper conductive plate 601, the second upper conductive plate 602, the third upper conductive plate 603 and the fourth upper conductive plate 604 respectively; wherein: the first upper conductive plate 601, the second upper conductive plate 602, the third upper conductive plate 603 and the fourth upper conductive plate 604 are respectively connected to a power input terminal of the first alarm, the second alarm, the third alarm and the fourth alarm and then connected to the neutral line N of the external power supply; the first lower conductive plate 701, the second lower conductive plate 702, the third lower conductive plate 703 and the fourth lower conductive plate 704 which correspond to the first upper conductive plate 601, the second upper conductive plate 602, the third upper conductive plate 603 and the fourth upper conductive plate 604 The fourth lower conductive plate 704 is respectively connected to one end of the coil of the intermediate relay KA1, the intermediate relay KA2, the intermediate relay KA3 and the intermediate relay KA4, and the other ends of the coil of the intermediate relay KA1, the intermediate relay KA2, the intermediate relay KA3 and the intermediate relay KA4 are connected to one end of the normally open auxiliary contact of the intermediate relay KA1, one end of the normally open auxiliary contact of the intermediate relay KA2, one end of the normally open auxiliary contact of the intermediate relay KA3 and one end of the normally open auxiliary contact of the intermediate relay KA4, and then connected to the live wire L of the external power supply; the other end of the normally open auxiliary contact of the intermediate relay KA1, the other end of the normally open auxiliary contact of the intermediate relay KA2, the other end of the normally open auxiliary contact of the intermediate relay KA3 and the other end of the normally open auxiliary contact of the intermediate relay KA4 are respectively electrically connected to the other power input end of the first alarm, the second alarm, the third alarm and the fourth alarm. The purpose of this design: on the one hand, when any vibration optical fiber 5 fails, the corresponding alarm will send out vibration optical fiber abnormal alarm information, which is convenient for the staff to repair the vibration optical fiber 5. On the other hand, even if a certain vibration optical fiber 5 or a plurality of vibration optical fibers 5 have problems and need to be repaired, as long as there are vibration optical fibers 5 in normal use at the scene, the automatic warning function of preventing accidental entry into the live area can still be realized. According to actual needs, multiple optical fiber channels 10 can be designed in practice.

[0032] The second embodiment of this application, refer to Figure 3 as well as Figure 4, which is different from the first embodiment in that: the elastic rubber plate 3 is fixed with fillets 30 on both sides, and a plug plate 32 is fixed under each fillet 30; the column 9 is provided with a slot for matching with the plug plate 32 and a groove for matching with the fillet 30; when the plug plate 32 is inserted into the slot, the fillet 30 is embedded in the groove, and the elastic rubber plate 3 is fixed above the optical fiber channel 10. A ring 40 is fixed under the pull rod 4, and the vibration optical fiber is sleeved in the ring 40. The elastic rubber plate 3, fillet 30, pull rod 4 and ring 40 are all made of rubber and are integrally formed. The purpose of such design is to facilitate installation. When the vibration optical fiber 5 fails, the elastic rubber plate 3 is grabbed and lifted up, so that the elastic rubber plate 3, fillet 30, pull rod 4 and ring 40 as a whole can be lifted together with the vibration optical fiber 5 and the fillet 32, and the vibration optical fiber 5 can be pulled out of the ring 40; in addition, the fillet 32 ​​is made of aluminum, which has a certain ductility, so that it is convenient for it to bend along the direction of the detection base 1. The insert plate 32 is fixedly connected to the fillet 30 , and in some embodiments, the two are bonded by strong glue.

[0033] In actual use, since the plug plate 32 is made of aluminum and has a certain degree of ductility, it is convenient for it to bend along the direction of the detection base 1, so the shape of the detection base 1 can be arbitrarily set according to the shape of the charged area, and has a wide range of applications. The present application provides a method for automatically warning against mistaken entry into a live area, based on the above-mentioned automatic warning device for automatically warning against mistaken entry into a live area, comprising the following steps: Step 1: Plan a protection path around the live area. The distance between the protection path and the closest point of the live area is greater than the safe distance for electric shock. Step 2: Install the above-mentioned automatic warning device for preventing accidental entry into the live area on the protection path; Step 3: The control device 2 is electrically connected to an external power supply; the automatic warning device for preventing accidental entry into the live area starts to automatically warn the personnel who have accidentally entered the live area, wherein: When any vibrating optical fiber 5 detects vibration, the control device 2 controls the warning module to issue a warning prompt message on site; When the alarm sends out an alarm message of abnormal vibration of optical fiber, the control device 2 sends the alarm message to the staff.

[0034] The present invention discloses an automatic warning device for preventing accidental entry into a live area. The detection range is wide, and any position around the live area can be detected. The device can be accurately set for applicability based on the discharge safety distance of the live area, and the prevention and control effect is accurate and reliable. The device has a simple structure and is easy to install. When installing, it is only necessary to fix the detection base 1 on the ground, and then snap the elastic rubber plate 3 with the vibration optical fiber 5 on top of it. The automatic warning for preventing accidental entry will not be delayed during maintenance. The vibration optical fiber 5 is arranged below the elastic rubber plate 3 and is not easily affected by bad weather such as rain, snow, and wind, and has a long service life.

[0035] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0036] Although the above describes the specific implementation methods of the present application in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present application. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present application, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the present application.

Claims

1. An automatic warning device for preventing accidental entry into a live area, characterized in that: include: A detection base (1), the detection base (1) being fixedly arranged around the energized area; a plurality of columns (9) being fixedly arranged on the detection base (1), optical fiber channels (10) being formed between each pair of columns (9); an elastic rubber plate (3) being arranged above the optical fiber channels (10) and between each pair of columns (9); A vibration detection mechanism, comprising a plurality of vibrating optical fibers (5) arranged in an optical fiber channel (10), each vibrating optical fiber (5) being suspended below an elastic rubber plate (3) above the vibrating optical fiber (5) via a plurality of pull rods (4); the vibrating optical fibers (5) being electrically connected to a control device (2); A warning module, electrically connected to the control device (2), and used to issue a warning message when the vibrating optical fiber (5) detects vibration; The control device (2) is electrically connected to an external power source.

2. The automatic warning device for preventing accidental entry into a live area according to claim 1 is characterized in that: An upper conductive plate (6) is fixedly provided below each vibrating optical fiber (5), and a lower conductive plate (7) cooperating with the upper conductive plate (6) is fixedly provided at the bottom of the optical fiber channel (10); The upper conductive plate (6) and the lower conductive plate (7) are both electrically connected to the alarm, and the alarm is electrically connected to the control device (2); when the upper conductive plate (6) contacts the lower conductive plate (7), the alarm sends out vibration optical fiber abnormality alarm information.

3. An automatic warning device for preventing accidental entry into a live area according to any one of claims 1 or 2, characterized in that: Filling strips (30) are fixedly provided on both sides of the elastic rubber plate (3), and a plug plate (32) is fixedly provided below each filling strip (30); The column bar (9) is provided with a slot that matches the plug board (32) and a groove that matches the fillet (30); when the plug board (32) is inserted into the slot, the fillet (30) is embedded in the groove, and the elastic rubber plate (3) is fixed above the optical fiber channel (10).

4. The automatic warning device for preventing accidental entry into a live area according to claim 3 is characterized in that: The elastic rubber plate (3) is in an arc-shaped structure, and when fixed above the optical fiber channel (10), the middle part thereof bulges upwards.

5. The automatic warning device for preventing accidental entry into a live area according to claim 3 is characterized in that: A sleeve ring (40) is fixedly provided below the pull rod (4), and the vibration optical fiber is sleeved in the sleeve ring (40).

6. The automatic warning device for preventing accidental entry into a live area according to claim 5 is characterized in that: The elastic rubber plate (3), the fillet (30), the pull rod (4) and the collar (40) are all made of rubber and are integrally formed.

7. The automatic warning device for preventing accidental entry into a live area according to claim 3 is characterized in that: The distance between the center lines of the elastic rubber plates (3) is less than 10 cm; The number of the columns (9) is such that the distance between the center lines of the two elastic rubber plates (3) located on both sides is greater than the stride length of an adult.

8. The automatic warning device for preventing accidental entry into a live area according to claim 3 is characterized in that: The top plane of the column (9) is parallel to the ground (11).

9. The automatic warning device for preventing accidental entry into a live area according to claim 2 is characterized in that: The upper conductive plate (6) has an arc-shaped structure, a plurality of hanging rings (60) are fixedly provided above the upper conductive plate (6), and the upper conductive plate (6) is hung below the vibrating optical fiber (5) via the hanging rings (60); The bottom of the optical fiber channel (10) is provided with slots (8) on the column bars (9) on both sides, and the two sides of the lower conductive plate (7) are respectively arranged in the slots (8) on the two sides.

10. A method for automatically warning against mistaken entry into a live area, based on the automatic warning device for automatically warning against mistaken entry into a live area as described in claim 2, characterized in that: The following steps are involved: Step 1: Plan a protection path around the live area. The distance between the protection path and the closest point of the live area is greater than the safe distance for electric shock. Step 2: Install the above-mentioned automatic warning device for preventing accidental entry into the live area on the protection path; Step 3: The control device (2) is electrically connected to an external power supply; the automatic warning device for preventing accidental entry into a live area starts to automatically warn people who have accidentally entered a live area, wherein: When any vibrating optical fiber (5) detects vibration, the control device (2) controls the warning module to issue a warning prompt message on site; When the alarm device issues an alarm message of abnormal vibration of the optical fiber, the control device (2) sends the alarm message to the staff.

Images