CN114664039A - False-entry-prevention charged area detection device based on laser grating alarm - Google Patents
False-entry-prevention charged area detection device based on laser grating alarm Download PDFInfo
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- CN114664039A CN114664039A CN202210162910.4A CN202210162910A CN114664039A CN 114664039 A CN114664039 A CN 114664039A CN 202210162910 A CN202210162910 A CN 202210162910A CN 114664039 A CN114664039 A CN 114664039A
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- 238000001514 detection method Methods 0.000 title claims abstract description 17
- 238000004806 packaging method and process Methods 0.000 claims abstract description 22
- 230000002265 prevention Effects 0.000 claims abstract description 5
- 238000005538 encapsulation Methods 0.000 claims description 21
- 230000000007 visual effect Effects 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 3
- 239000013307 optical fiber Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/181—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems
- G08B13/183—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
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- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention belongs to the technical field of power grid safety tools, and particularly relates to a false-entry-prevention charged area detection device based on laser grating alarming; the portable battery pack comprises a packaging box body, wherein a controller module and a power supply module are arranged in the packaging box body, the power supply module is connected with the controller module, the battery module is a detachable module, the controller module is also connected with a control switch module, an operating switch for manual operation of an operator is arranged on the control switch module, an acousto-optic alarm module is also arranged in the packaging box body, the acousto-optic alarm module is connected with the controller module, and the controller module is also respectively connected with a laser receiving module and a laser emitting module through optical fiber connectors; the wire connecting device is reasonable in structure and convenient to operate and use, can effectively assist workers in carrying out secondary wire connection work, provides special error prevention measures, avoids the occurrence of error wire connection and safety accidents, and improves the working efficiency.
Description
Technical Field
The invention belongs to the technical field of power grid safety tools, and particularly relates to a device for detecting an anti-mistaken-entry electrified area based on laser grating alarming.
Background
The secondary system is a system composed of a relay protection system, an automatic control system, a detection metering system, a system communication system, a dispatching automation system and the like, mainly serves as a primary system, is an indispensable important component of an electric power system, and can realize the contact between people and the primary system so as to carry out monitoring and control and ensure that the primary system can run safely and economically; the fault of the secondary circuit often destroys or affects the normal operation of the power production, possibly causes the rejection or misoperation of the circuit breaker, and has a major accident of the disruption of the power system, therefore, the secondary circuit is not a main body, but plays an extremely important role in ensuring the safety of the power production, providing qualified electric energy for users and the like; secondary maintenance workers undertake daily maintenance and regular inspection work of secondary equipment of the power grid, wherein the wiring work frequency of a secondary system is high, and the workload is large; the secondary error prevention measures used at present in a working site are used for hanging 'in-service' red cloth on adjacent screen positions of a working interval to serve as a reminder for workers, no special error prevention measures are provided, and due to the fact that the devices in the working site are more in interval and similar in appearance, the workers are prone to moving wrong intervals due to fatigue operation or being influenced by overlooking or looking up, the possibility of mistaken reading of terminal rows and wrong wiring exists; therefore, it is necessary to provide a device for preventing the mistaken-entering-into-live area detection based on laser grating alarm, which can effectively assist the staff in carrying out the secondary wiring work, provide special error-prevention measures, avoid the occurrence of wrong wiring and safety accidents, and improve the working efficiency.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides the detection device for preventing the false access to the electrified area based on the laser grating alarm, which has a reasonable structure and convenient operation and use, can effectively assist workers in carrying out secondary wiring work, provides special error prevention measures, avoids the occurrence of wrong wiring and safety accidents, and improves the working efficiency.
The purpose of the invention is realized as follows: a device for detecting a mistaken-entering-preventing charged area based on laser grating alarm comprises a packaging box body, wherein a controller module and a power module are arranged inside the packaging box body, the power module is connected with the controller module, the battery module is a detachable module, the controller module is also connected with a control switch module, an operating switch for manual operation of an operator is arranged on the control switch module, an audible and visual alarm module is further arranged inside the packaging box body and connected with the controller module, the controller module is also respectively connected with a laser receiving module and a laser emitting module through optical fiber connectors, and when the mistaken-entering-preventing working state is realized, the switch module is respectively connected with an auxiliary normally-open contact of the laser receiving module and an auxiliary normally-open contact of a relay of the laser receiving module, when a switch in the control switch module is closed, the laser receiving module and the laser transmitting module start to work, when a worker mistakenly touches a charged area, the laser receiving module senses that laser is shielded, the laser receiving module assists the closing of a normally open contact to enable the relay to act, the corresponding relay assists the closing of the normally open contact to enable the acousto-optic alarm module to be switched on, and the worker is prompted to leave the area; when the working state is prevented from being mistakenly output, the switch module is respectively connected with the auxiliary normally open contact of the laser receiving module and the auxiliary normally closed contact of the relay, when a worker is located in a working area, laser is shielded, the relay acts to enable the auxiliary normally closed contact of the relay to be disconnected and not to send out an alarm signal, when the worker leaves the working area without permission, the laser normally receives and sends out, the relay returns to enable the auxiliary normally closed contact of the relay to be closed, and at the moment, the alarm signal is sent out.
An operation panel is arranged on the front side face of the packaging box body, and the control switch module and the sound-light alarm module are arranged on the operation panel.
The operation panel is provided with an operation knob, the operation knob is connected with the control switch module, the operation panel is further provided with a warning lamp and a sound outlet, the warning lamp is connected with the sound-light alarm module, and a sound outlet component on the sound-light alarm module is arranged below the sound outlet.
The inside of encapsulation box body left surface is provided with the mounting groove, battery module with the mode of pegging graft set up in inside the mounting groove, be provided with the mouth that charges on battery module's the left surface.
The bottom of mounting groove is provided with the inserting groove, be provided with the interface on the right flank of battery module, the interface with the inserting groove is connected through the mode of can pegging graft.
The battery module packaging structure is characterized in that a fixing assembly is arranged on the left side face of the packaging box body, the fixing assembly is arranged on the upper side and the lower side of the battery module, the fixing assembly comprises limiting plates fixedly arranged on the packaging box body, a sliding sealing plate is arranged between the limiting plates in a sliding mode, and a push-pull plate is arranged on the sliding sealing plate.
The inside near the right flank of encapsulation box body is provided with fixed row of inserting, fixed row of inserting through the installation pole with the right side wallboard fixed connection of encapsulation box body, laser receiving module with the laser emission module all fixed set up in on the fixed row of inserting.
The packaging box is characterized in that a mounting groove plate is arranged on the rear side face of the packaging box body, and a magnetic suction plate is arranged in a groove formed by the mounting groove plate.
The invention has the beneficial effects that: the invention relates to a device for detecting a mistaken-entering-preventing charged area based on laser grating alarm, which is arranged in a packaging box body, and comprises a controller module, a power supply module, a control switch module, an acousto-optic alarm module, a laser receiving module and a laser transmitting module, wherein the switch module is respectively connected with an auxiliary normally-open contact of the laser receiving module and an auxiliary normally-open contact of a relay when the mistaken-entering-preventing working state is realized; when the working state is prevented from being mistakenly output, the switch module is respectively connected with the auxiliary normally open contact of the laser receiving module and the auxiliary normally closed contact of the relay, when a worker is in a working area, laser is shielded, the relay acts to break the auxiliary normally closed contact of the relay and not send out an alarm signal, when the worker leaves the working area without permission, the laser normally receives and sends out, the relay returns to close the auxiliary normally closed contact of the relay, and at the moment, the alarm signal is sent out; the device for detecting the mistaken-entering-prevention electrified area based on the laser grating alarm is reasonable in structure and convenient to operate and use, can effectively assist workers in carrying out secondary wiring work, provides special mistaken-prevention measures, avoids the occurrence of mistaken wiring and safety accidents, and improves the working efficiency.
Drawings
Fig. 1 is a schematic diagram of an internal structure of a device for detecting an anti-false-entry electrified region based on laser grating alarm.
Fig. 2 is a schematic front view of a packaging box body of the device for detecting the false-entry-preventing charged area based on laser grating alarm.
Fig. 3 is a schematic top view of a packaging box of the device for detecting an anti-mistaken-entering electrified region based on laser grating alarm.
Fig. 4 is a schematic circuit diagram of the false-entry-prevention working state of the false-entry-prevention charged area detection device based on laser grating alarm.
Fig. 5 is a schematic circuit diagram of the anti-false-entry live area detection device based on laser grating alarm for preventing false-exit working state.
Fig. 6 is a module relation diagram of the device for detecting the false-entry-prevention charged area based on the laser grating alarm.
In the figure: 1. encapsulation box body 2, control switch module 3, power module 4, controller module 5, optical fiber splice 6, audible and visual alarm module 7, laser receiving module 8, laser emission module 9, the supplementary normally open contact 10 of laser receiving module, relay 11, the supplementary normally open contact 12 of relay, the supplementary normally closed contact 13 of relay, fixed subassembly 14, mounting groove 15, charging port 16, interface 17, inserting groove 18, operation knob 19, warning light 20, the hole of sounding 21, operation panel 22, fixed row of inserting 23, installation rod 24, push-and-pull board 25, sliding seal board 26, limiting plate 27, magnetism board 28, the installation frid is inhaled.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Example 1
As shown in fig. 1-6, a prevent mistake and go into electrified regional detection device based on laser grating warning, it includes encapsulation box 1, encapsulation box 1 is inside to be provided with controller module 4 and power module 3, power module 3 with controller module 4 is connected, battery module 3 is for dismantling the module, controller module 4 still is connected with control switch module 2, be provided with the operating switch who supplies operating personnel manually operation on the control switch module 2, encapsulation box 1 is inside still to be provided with audible and visual alarm module 6, audible and visual alarm module 6 with controller module 4 is connected, controller module 4 still is connected with laser receiving module 7 and laser emission module 8 respectively through fiber splice 5, when preventing mistake and going into operating condition, switch module 2 respectively with laser receiving module auxiliary contact 9 of laser receiving module 7 and auxiliary normally open contact 11 of relay 10 mutually When a switch in the control switch module 2 is closed, the laser receiving module 7 and the laser emitting module 8 start to work, when a worker mistakenly touches a charged area, the laser receiving module 7 senses that laser is shielded, the laser receiving module assists in closing a normally open contact, so that the relay 10 acts, the corresponding relay assists in closing the normally open contact 11, so that the sound and light alarm module 6 is switched on, and the worker is prompted to leave the area; when the working state is prevented from being mistakenly output, the switch module 2 is respectively connected with the auxiliary normally open contact 9 of the laser receiving module 7 and the auxiliary normally closed contact 12 of the relay 10, when a worker is located in a working area, laser is shielded, the relay 10 acts to break the auxiliary normally closed contact 12 of the relay, an alarm signal is not sent out, when the worker leaves the working area without permission, the laser normally receives and sends out, the relay 10 returns to enable the auxiliary normally closed contact 12 of the relay to be closed, and the alarm signal is sent out at the moment.
The invention relates to a device for detecting a false-entry-preventing charged area based on laser grating alarm, which is characterized in that a controller module 4, a power supply module 3, a control switch module 2, an audible and visual alarm module 6, a laser receiving module 7 and a laser emitting module 8 are arranged in a packaging box body 1, the switch module 2 is respectively connected with an auxiliary normally open contact 9 of the laser receiving module 7 and an auxiliary normally open contact 11 of a relay 10 when the false-entry-preventing working state is realized, when a switch in the control switch module 2 is closed, the laser receiving module 7 and the laser emitting module 8 start working, when a worker mistakenly touches the charged area, the laser receiving module 7 senses that laser is shielded, the auxiliary normally open contact of the laser receiving module is closed, the auxiliary normally open contact of the relay 10 is closed, the corresponding auxiliary normally open contact 11 of the relay is closed, and the audible and visual alarm module 6 is conducted, prompting staff to leave the area; when the working state is prevented from being mistakenly output, the switch module 2 is respectively connected with the auxiliary laser receiving module normally open contact 9 of the laser receiving module 7 and the auxiliary relay normally closed contact 12 of the relay 10, when a worker is located in a working area, laser is shielded, the relay 10 acts to break the auxiliary relay normally closed contact 12 and not send out an alarm signal, when the worker leaves the working area without permission, the laser normally receives and sends out, the relay 10 returns to close the auxiliary relay normally closed contact 12, and at the moment, the alarm signal is sent out; the device for detecting the mistaken-entering-prevention electrified area based on the laser grating alarm is reasonable in structure and convenient to operate and use, can effectively assist workers in carrying out secondary wiring work, provides special mistaken-prevention measures, avoids the occurrence of mistaken wiring and safety accidents, and improves the working efficiency.
Example 2
As shown in fig. 1-6, a prevent mistake and go into electrified regional detection device based on laser grating warning, it includes encapsulation box 1, encapsulation box 1 is inside to be provided with controller module 4 and power module 3, power module 3 with controller module 4 is connected, battery module 3 is for dismantling the module, controller module 4 still is connected with control switch module 2, be provided with the operating switch who supplies operating personnel manually operation on the control switch module 2, encapsulation box 1 is inside still to be provided with audible and visual alarm module 6, audible and visual alarm module 6 with controller module 4 is connected, controller module 4 still is connected with laser receiving module 7 and laser emission module 8 respectively through fiber splice 5, when preventing mistake and going into operating condition, switch module 2 respectively with laser receiving module auxiliary contact 9 of laser receiving module 7 and auxiliary normally open contact 11 of relay 10 mutually When a switch in the control switch module 2 is closed, the laser receiving module 7 and the laser emitting module 8 start to work, and when a worker mistakenly touches a charged area, the laser receiving module 7 senses that laser is shielded, the laser receiving module assists in closing a normally open contact, so that the relay 10 acts, the corresponding relay assists in closing the normally open contact 11, so that the acousto-optic alarm module 6 is switched on, and the worker is prompted to leave the area; when the working state is prevented from being mistakenly output, the switch module 2 is respectively connected with the auxiliary normally open contact 9 of the laser receiving module 7 and the auxiliary normally closed contact 12 of the relay 10, when a worker is located in a working area, laser is shielded, the relay 10 acts to break the auxiliary normally closed contact 12 of the relay, an alarm signal is not sent out, when the worker leaves the working area without permission, the laser normally receives and sends out, the relay 10 returns to enable the auxiliary normally closed contact 12 of the relay to be closed, and the alarm signal is sent out at the moment.
For better effect, be provided with operation panel 21 on the leading flank of encapsulation box body 1, control switch module 2 with audible-visual alarm module 6 all set up in on the operation panel 21, rational in infrastructure, convenient operation.
For better effect, be provided with operation knob 18 on the operation panel 21, operation knob 18 with control switch module 2 is connected, still be provided with warning light 19 and phonate hole 20 on the operation panel 21, warning light 19 with audible and visual alarm module 6 is connected, the phonate part on the audible and visual alarm module 6 set up in phonate hole 20 below, rational in infrastructure, convenient operation provides effective suggestion for the staff.
For better effect, the inside of encapsulation box body 1 left surface is provided with mounting groove 14, battery module 3 with the mode of pegging graft set up in inside mounting groove 14, be provided with charging mouth 15 on battery module 3's the left surface, the dismouting of battery module 3 of being convenient for improves work efficiency.
For better effect, the bottom of the mounting groove 14 is provided with an insertion groove 17, the right side surface of the battery module 3 is provided with an insertion port 16, and the insertion port 16 is connected with the insertion groove 17 in a pluggable mode, so that the structure is reasonable and the connection is convenient.
For better effect, be provided with fixed subassembly 13 on the left surface of encapsulation box body 1, fixed subassembly 13 set up in battery module 3's upper and lower both sides, fixed subassembly 13 including fixed set up in limiting plate 26 on the encapsulation box body 1, two it is provided with slip shrouding 25 to slide between the limiting plate 26, be provided with push-and-pull plate 24 on the slip shrouding 25, through the blockking of slip shrouding 25 guarantees battery module 3's stability.
For better effect, a fixed socket 22 is arranged in the vicinity of the right side surface of the package box body 1, the fixed socket 22 is fixedly connected with the right side wall plate of the package box body 1 through a mounting rod 23, and the laser receiving module 7 and the laser emitting module 8 are both fixedly arranged on the fixed socket 22.
For better effect, the rear side surface of the packaging box body 1 is provided with the installation groove plate 28, the magnetic suction plate 27 is arranged in the groove formed by the installation groove plate 28, and the device can be adsorbed on the cabinet door of the screen cabinet of the electric appliance room through the magnetic suction plate 27 during working, so that the device is convenient and quick.
The invention relates to a device for detecting a false-entry-preventing charged area based on laser grating alarm, which is characterized in that a controller module 4, a power supply module 3, a control switch module 2, an audible and visual alarm module 6, a laser receiving module 7 and a laser emitting module 8 are arranged in a packaging box body 1, the switch module 2 is respectively connected with an auxiliary normally open contact 9 of the laser receiving module 7 and an auxiliary normally open contact 11 of a relay 10 when the false-entry-preventing working state is realized, when a switch in the control switch module 2 is closed, the laser receiving module 7 and the laser emitting module 8 start working, when a worker mistakenly touches the charged area, the laser receiving module 7 senses that laser is shielded, the auxiliary normally open contact of the laser receiving module is closed, the auxiliary normally open contact of the relay 10 is closed, the corresponding auxiliary normally open contact 11 of the relay is closed, and the audible and visual alarm module 6 is conducted, prompting staff to leave the area; when the working state is prevented from being mistakenly output, the switch module 2 is respectively connected with the auxiliary laser receiving module normally open contact 9 of the laser receiving module 7 and the auxiliary relay normally closed contact 12 of the relay 10, when a worker is located in a working area, laser is shielded, the relay 10 acts to break the auxiliary relay normally closed contact 12 and not send out an alarm signal, when the worker leaves the working area without permission, the laser normally receives and sends out, the relay 10 returns to close the auxiliary relay normally closed contact 12, and at the moment, the alarm signal is sent out; the device for detecting the mistaken-entering-prevention electrified area based on the laser grating alarm is reasonable in structure and convenient to operate and use, can effectively assist workers in carrying out secondary wiring work, provides special mistaken-prevention measures, avoids the occurrence of mistaken wiring and safety accidents, and improves the working efficiency.
Claims (8)
1. The utility model provides a prevent mistake and go into electrified regional detection device based on laser grating reports to police, it includes packaging box body (1), its characterized in that: encapsulation box body (1) is inside to be provided with controller module (4) and power module (3), power module (3) with controller module (4) are connected, battery module (3) are for dismantling the module, controller module (4) still are connected with control switch module (2), be provided with the operating switch who supplies operating personnel manually operation on control switch module (2), encapsulation box body (1) is inside still to be provided with audible and visual alarm module (6), audible and visual alarm module (6) with controller module (4) are connected, controller module (4) still are connected with laser receiving module (7) and laser emission module (8) respectively through fiber splice (5), when preventing mistake income operating condition, switch module (2) respectively with the supplementary normally open contact (9) of laser receiving module (7) and the relay auxiliary contact (11) of relay (10) normally open contact (11) ) When a switch in the control switch module (2) is closed, the laser receiving module (7) and the laser emitting module (8) start to work, when a worker mistakenly touches a charged area, the laser receiving module (7) senses that laser is shielded, the laser receiving module assists in closing a normally open contact to enable the relay (10) to act, the corresponding relay assists in closing the normally open contact (11) to enable the sound-light alarm module (6) to be conducted, and the worker is prompted to leave the area; when the working state is prevented from being mistakenly output, the switch module (2) is respectively connected with the auxiliary normally open contact (9) of the laser receiving module (7) and the auxiliary normally closed contact (12) of the relay (10), when a worker is located in a working area, laser is shielded, the relay (10) acts to break the auxiliary normally closed contact (12) of the relay, an alarm signal is not sent out, when the worker leaves the working area without permission, the laser normally receives and sends out, the relay (10) returns to enable the auxiliary normally closed contact (12) of the relay to be closed, and the alarm signal is sent out at the moment.
2. The laser-grating-alarm-based device for detecting the charged area with the false access prevention function as claimed in claim 1, wherein: an operation panel (21) is arranged on the front side face of the packaging box body (1), and the control switch module (2) and the sound-light alarm module (6) are arranged on the operation panel (21).
3. The laser grating alarm-based false-entry-prevention charged area detection device as claimed in claim 2, wherein: be provided with on operation panel (21) operation knob (18), operation knob (18) with control switch module (2) are connected, still be provided with warning light (19) and sound outlet (20) on operation panel (21), warning light (19) with audible-visual alarm module (6) are connected, the sound outlet part on audible-visual alarm module (6) set up in sound outlet (20) below.
4. The laser grating alarm-based false-entry-prevention charged area detection device as claimed in claim 1, wherein: the inside of encapsulation box body (1) left surface is provided with mounting groove (14), battery module (3) with the mode of pegging graft set up in inside mounting groove (14), be provided with on the left surface of battery module (3) and charge mouthful (15).
5. The laser grating alarm-based false-entry-prevention charged area detection device as claimed in claim 4, wherein: the bottom of the mounting groove (14) is provided with a plugging groove (17), the right side surface of the battery module (3) is provided with a plugging port (16), and the plugging port (16) is connected with the plugging groove (17) in a plugging manner.
6. The laser grating alarm-based false-entry-prevention charged area detection device as claimed in claim 4, wherein: be provided with fixed subassembly (13) on the left surface of encapsulation box body (1), fixed subassembly (13) set up in the upper and lower both sides of battery module (3), fixed subassembly (13) including fixed set up in limiting plate (26) on the encapsulation box body (1), two it is provided with slip shrouding (25) to slide between limiting plate (26), be provided with push-and-pull plate (24) on slip shrouding (25).
7. The laser grating alarm-based false-entry-prevention charged area detection device as claimed in claim 1, wherein: the inside near the right flank of encapsulation box body (1) is provided with fixed row of inserting (22), fixed row of inserting (22) through installation pole (23) with the right side wallboard fixed connection of encapsulation box body (1), laser receiving module (7) with laser emission module (8) all fixed set up in on the fixed row of inserting (22).
8. The laser grating alarm-based false-entry-prevention charged area detection device as claimed in claim 1, wherein: the packaging box is characterized in that a mounting groove plate (28) is arranged on the rear side face of the packaging box body (1), and a magnetic suction plate (27) is arranged in a groove formed by the mounting groove plate (28).
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CN202210162910.4A CN114664039A (en) | 2022-02-22 | 2022-02-22 | False-entry-prevention charged area detection device based on laser grating alarm |
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CN209388457U (en) * | 2018-12-13 | 2019-09-13 | 国网安徽省电力有限公司合肥供电公司 | A kind of portable region detection warning device |
CN110611293A (en) * | 2019-09-29 | 2019-12-24 | 广东电网有限责任公司 | Portable automatic alarm power-off protection device |
CN215340770U (en) * | 2021-06-21 | 2021-12-28 | 国网山西省电力公司晋城供电公司 | Safety protection system for metering and checking site of transformer substation |
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