An isolation and protection alarm device for electrical and rotating equipment

Abstract

This utility model discloses an isolation and protection alarm device for electrical and rotating equipment, aiming to solve the problems of rigid access control, single monitoring dimensions, high false alarm and false alarm rates, and poor system linkage in existing technologies. The device includes columns arranged around the rotating equipment and a barrier formed by main grid bars. At least one barrier has a passage barrier at its base controlled by a facial recognition module for raising and lowering. Infrared human body sensors facing the rotating equipment are installed on the outside of the columns. The sensors are connected to an alarm controller and an audible and visual alarm. The alarm controller is linked to a central control room terminal, enabling remote control of the passage barrier drive motor and shutdown of the rotating equipment. The facial recognition module records and communicates alarm information. This device achieves dynamic access control, three-dimensional monitoring, and rapid linkage alarm, suitable for high-risk scenarios involving electrical and rotating equipment, improving the accuracy and efficiency of safety management.

Description

Technical Field

[0001] This utility model relates to the field of protective device technology, and in particular to an isolation and protection alarm device for electrical and rotating equipment. Background Technology

[0002] Traditional physical isolation relies on fixed fences, which cannot dynamically distinguish personnel permissions and have low protection efficiency; in electronic monitoring, infrared beams are prone to false alarms due to environmental interference, video recognition has privacy disputes and blind spots at night, and access control system access management is at risk of theft. Regarding the protection of rotating equipment, mechanical interlocking devices require manual operation and lack real-time monitoring; pressure sensing pads can only detect ground intrusion and cannot cover three-dimensional spaces. Alarm systems have monitoring blind spots and response delays of ≥2 seconds, which can easily lead to safety accidents. Summary of the Invention The present invention aims to solve the problems of rigid access control, single monitoring dimensions, high false alarm and false alarm rates, and poor system linkage in the existing technology.

[0003] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an electrical and rotating equipment isolation and protection alarm device, including columns arranged equidistantly around the rotating equipment, main grid bars fixedly connected between the columns, and a base fixed at the bottom of the columns. The main grid bars are arranged equidistantly along the axial direction of the columns to form a barrier. At least one barrier wall is vertically and slidably installed at the bottom of the barrier wall, and a face recognition module for controlling the lifting of the barrier wall is installed on the columns.

[0004] Preferably, the passage barrier includes a lifting sleeve axially slidably connected to the column and a secondary grid bar fixedly connected to the lifting sleeve. The base is provided with a lifting drive unit for the lifting sleeve, and the secondary grid bars are equidistantly spaced along the vertical direction on the secondary grid bars.

[0005] Preferably, a screw is vertically and rotatably installed inside the column, the lifting sleeve is threadedly connected to the screw, and the driving unit is a drive motor fixed inside the base, with the output shaft of the drive motor coaxially and fixedly connected to the bottom end of the screw.

[0006] Preferably, a through groove is vertically formed on the outer side wall of the column, a wiring block is fixedly connected to the outer side wall of the lifting sleeve, the wiring block is slidably disposed in the through groove, and the end of the sub-grid bar is fixedly connected to the wiring block.

[0007] Preferably, a fixing block is fixedly connected to the outer wall of the column, and the main grid bar is fixedly connected to the fixing block.

[0008] Preferably, infrared human body sensors are installed on the outer side walls of the columns, and the infrared human body sensors are positioned facing the rotating device.

[0009] Preferably, the infrared human body sensor signal is connected to an alarm controller, and the output terminal of the alarm controller is connected to an audible and visual alarm. The audible and visual alarm is fixed to the top of the column. When the infrared human body sensor detects a human body within a preset range around the rotating equipment, the alarm controller triggers the audible and visual alarm to issue a warning.

[0010] Preferably, the alarm controller is also connected to the central control room terminal. The alarm controller can transmit the detection information and alarm status of the infrared human body sensor to the central control room terminal in real time, and the central control room terminal can remotely control the start and stop of the drive motor.

[0011] Preferably, the control room terminal is connected to the control module of the rotating equipment. When the alarm controller continuously receives the trigger signal from the infrared human body sensor for more than a preset time, the control room terminal can send a stop command to the rotating equipment through the control module.

[0012] Preferably, the face recognition module has a built-in storage unit that can record the information and timestamp of each verified person. The storage unit communicates with the alarm controller to form a linkage record between personnel access and hazard monitoring.

[0013] This utility model provides an isolation and protection alarm device for electrical and rotating equipment, which has the following beneficial effects.

[0014] 1. By controlling the raising and lowering of the access barrier through a facial recognition module, it can accurately distinguish personnel permissions, allowing only authorized personnel to enter, thus preventing unauthorized personnel from accidentally entering dangerous areas. Compared with traditional fixed fences and easily stolen access control systems, it avoids the tediousness of manual opening and closing and reduces the risk of permission abuse. It is especially suitable for scenarios such as visitor reception and new employee management, improving the precision of security control.

[0015] 2. Infrared human body sensors installed on the outside of the pillars face the rotating equipment, enabling real-time monitoring of personnel activity around the equipment, overcoming the limitation of traditional pressure-sensing pads that can only detect ground intrusion. Combined with the barrier formed by the main grid strips, a three-dimensional protective network integrating physical isolation and electronic monitoring is constructed, eliminating monitoring blind spots.

[0016] 3. The infrared human body sensor is used to directly monitor human activity, which reduces the problem of infrared beams being susceptible to environmental interference; at the same time, the sound and light alarm is linked with the central control room terminal, and the alarm response is rapid from detection to alarm, overcoming the delay defect of traditional systems of ≥2 seconds, and can promptly warn personnel to stay away from danger. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0018] Figure 2 This is a top view of the internal structure of the column in an embodiment of this utility model.

[0019] Figure 3 This is a top view of an embodiment of the present utility model.

[0020] In the diagram: 1. Column; 2. Base; 3. Main grid bar; 4. Secondary grid bar; 5. Face recognition module; 6. Screw; 7. Lifting sleeve; 8. Wiring block; 9. Fixing block; 10. Infrared human body sensor; 11. Rotating device. Detailed Implementation

[0021] like Figure 1-3 As shown, this utility model provides an electrical and rotating equipment isolation and protection alarm device, including columns 1 arranged equidistantly around the rotating equipment 11, main grid bars 3 fixedly connected between the columns 1, and a base 2 fixed at the bottom of the columns 1. The main grid bars 3 are arranged equidistantly along the axial direction of the columns 1 to form a barrier. At least one barrier is vertically slidably provided at the bottom of the barrier. A face recognition module 5 for controlling the lifting of the barrier is provided on the columns 1.

[0022] The uprights 1 and the main grid 3 form a regular hexagonal structure arranged around the rotating equipment 11, thus surrounding the rotating equipment 11. When personnel need to enter the protective alarm device for maintenance, they can scan their faces using the facial recognition module 5, which records their facial information. After the information is verified, the access barrier is moved upward to create a gap, allowing personnel to pass through the original blocking area of ​​the access barrier to enter the inner side of the protective alarm device for maintenance.

[0023] like Figure 1 As shown. The access barrier includes a lifting sleeve 7 axially slidably connected to the column 1 and a secondary grid bar 4 fixedly connected to the lifting sleeve 7. The base 2 is provided with a lifting drive unit for the lifting sleeve 7, and the secondary grid bars 4 are equidistantly located along the vertical direction. By driving the lifting sleeves 7 connected to both ends of the secondary grid bars 4 to move upward synchronously, the secondary grid bars 4 are moved upward, thereby opening the communication barrier and allowing personnel to enter the inner side.

[0024] like Figure 2 As shown. A screw 5 is vertically and rotatably installed inside the column 1. The lifting sleeve 7 is threadedly connected to the screw 5. The driving unit is a drive motor fixed inside the base 2, and the output shaft of the drive motor is coaxially and fixedly connected to the bottom end of the screw 5. The screw 5 is driven to rotate by the drive motor. Since the lifting sleeve 7 is threadedly connected to the screw 5 and is vertically and slidably connected inside the column 1, the lifting sleeve 7 can move up and down when the screw 5 rotates, thereby driving the secondary grid bars 4 to move up and down.

[0025] like Figure 2 As shown. A through slot is vertically formed on the outer wall of the column 1. A wiring block 8 is fixedly connected to the outer wall of the lifting sleeve 7. The wiring block 8 is slidably disposed in the through slot. The end of the secondary grid bar 4 is fixedly connected to the wiring block 8. Through the cooperation of the wiring block 8 and the through slot, the movement of the lifting sleeve 7 can be limited, so that the lifting sleeve 7 can only move along the axis inside the column 1. The secondary grid bar 4 is fixedly connected to the lifting sleeve 7 by the wiring block 8. When the secondary grid bar 4 is damaged, the connection between the wiring block 8 and the secondary grid bar 4 can be disconnected to replace the secondary grid bar 4, ensuring that the secondary grid bar 4 is in a taut state.

[0026] like Figure 2 As shown, to achieve a detachable connection between the main grid bar 3 and the column 1, a fixing block 9 is fixedly connected to the outer wall of the column 1, and the main grid bar 3 is fixedly connected to the fixing block 9.

[0027] In a preferred embodiment of this invention, infrared human body sensors 10 are installed on the outer walls of each column 1, facing the rotating device 11. Six columns 1 are equidistantly arranged along the circumference of the main axis of the rotating device 11, with an infrared human body sensor 10 installed on the outer wall of each column 1 at a distance of 1.2m from the ground. The sensors are Fresnel lens-type pyroelectric infrared modules with a detection angle of 120° and a detection distance of 3m, all facing the center area of ​​the main axis. By adjusting the installation angle of the sensors, the detection range of the six sensors forms a 360° coverage without blind spots, ensuring that personnel within 5m of the main axis can be detected.

[0028] In a preferred embodiment of this utility model, the infrared human body sensor 10 is connected to an alarm controller, and the output of the alarm controller is connected to an audible and visual alarm, which is fixed to the top of the column 1. When the infrared human body sensor 10 detects a human body within a preset range around the rotating device 11, the alarm controller triggers the audible and visual alarm to issue a warning. The alarm controller uses an STM32F103 microcontroller and is connected to the infrared human body sensor 10 via an RS485 bus. The audible and visual alarm installed on the top of the column 1 is powered by 220V AC, with an alarm sound pressure level ≥110dB, and the warning light is a red and blue alternating flashing mode. When any sensor detects a human body, the controller triggers an alarm after a 0.5-second delay, and the alarm continues until 3 seconds after the human body leaves the detection range, at which point it stops.

[0029] As a preferred embodiment of this utility model, the alarm controller is also connected to the central control room terminal. The alarm controller can transmit the detection information and alarm status of the infrared human body sensor 10 to the central control room terminal in real time, and the central control room terminal can remotely control the start and stop of the drive motor. The alarm controller is wirelessly connected to the central control room terminal via a 5G module. When the infrared human body sensor 10 detects a person entering, the terminal displays the alarm location in real time, including the corresponding column 1 number, detection time, and sensor signal strength. The central control room operator can remotely control the drive motor through the terminal interface and forcibly lower the secondary grid 4 to close the passage in an emergency.

[0030] In a preferred embodiment of this invention, the central control room terminal is connected to the control module of the rotating equipment 11. When the alarm controller continuously receives the trigger signal from the infrared human body sensor 10 for more than a preset duration, the central control room terminal can send a stop command to the rotating equipment 11 through the control module. The central control room terminal communicates with the PLC system of the water pump control cabinet via Ethernet. The preset trigger duration is 15 seconds. When the infrared human body sensor 10 continuously detects that a person has stayed within 1.5m of the impeller for more than 15 seconds, the terminal automatically sends a stop command to the PLC and records the reason for the stop and the time. If the person leaves within 15 seconds, the system only issues an audible and visual alarm without triggering a stop, thus avoiding accidental operation that could affect equipment operation.

[0031] As a preferred embodiment of this utility model, the face recognition module 5 has a built-in storage unit that records the information and timestamp of each verified person. The storage unit communicates with the alarm controller to form a linked record for personnel access and hazard monitoring. The face recognition module 5 uses a 2-megapixel camera and has a built-in local face database that can store 500 sets of personnel information. Each time an authorized person passes verification, the storage unit records their name, employee number, and access time, and synchronizes this information to the alarm controller. When the person enters the protected area, an infrared alarm is triggered, and the system automatically links this to their access record, displaying "Authorized person XX entered the danger zone at XX" on the central control terminal, making it easy to distinguish between authorized operations and unauthorized intrusion.

Claims

1. An isolation and protection alarm device for electrical and rotating equipment, characterized in that: It includes columns (1) arranged equidistantly around the rotating device (11), main grid bars (3) fixedly connected between the columns (1) and base (2) fixed at the bottom of the columns (1). The main grid bars (3) are arranged equidistantly along the axial direction of the columns (1) to form a barrier. At least one barrier is vertically slidably installed at the bottom of the barrier. A face recognition module (5) for controlling the lifting of the barrier is installed on the columns (1).

2. The electrical and rotating equipment isolation and protection alarm device as described in claim 1, characterized in that: The passage barrier includes a lifting sleeve (7) axially slidably connected in the column (1) and a secondary grid bar (4) fixedly connected in the lifting sleeve (7). The base (2) is provided with a lifting drive unit for the lifting sleeve (7), and the secondary grid bar (4) is equidistantly located in the vertical direction on the secondary grid bar (4).

3. The electrical and rotating equipment isolation and protection alarm device as described in claim 2, characterized in that: A screw (6) is vertically rotatably installed inside the column (1), and the lifting sleeve (7) is threadedly connected to the screw (6). The driving unit is a drive motor fixed inside the base (2), and the output shaft of the drive motor is coaxially and fixedly connected to the bottom end of the screw (6).

4. The electrical and rotating equipment isolation and protection alarm device as described in claim 3, characterized in that: A through groove is vertically provided on the outer side wall of the column (1), and a wiring block (8) is fixedly connected to the outer side wall of the lifting sleeve (7). The wiring block (8) is slidably disposed in the through groove, and the end of the sub-grid (4) is fixedly connected to the wiring block (8).

5. The electrical and rotating equipment isolation and protection alarm device as described in claim 1, characterized in that: A fixing block (9) is fixedly connected to the outer wall of the column (1), and the main grid bar (3) is fixedly connected to the fixing block (9).

6. The electrical and rotating equipment isolation and protection alarm device as described in claim 3, characterized in that: Infrared human body sensors (10) are installed on the outer side wall of each column (1), and the infrared human body sensors (10) are positioned facing the rotating device (11).

7. The electrical and rotating equipment isolation and protection alarm device as described in claim 6, characterized in that: The infrared human body sensor (10) is connected to an alarm controller. The output of the alarm controller is connected to an audible and visual alarm. The audible and visual alarm is fixed to the top of the column (1). When the infrared human body sensor (10) detects a human body within a preset range around the rotating equipment (11), the alarm controller triggers the audible and visual alarm to issue a warning.

8. The electrical and rotating equipment isolation and protection alarm device as described in claim 7, characterized in that: The alarm controller is also connected to the central control room terminal. The alarm controller can transmit the detection information and alarm status of the infrared human body sensor (10) to the central control room terminal in real time, and the central control room terminal can remotely control the start and stop of the drive motor.

9. The electrical and rotating equipment isolation and protection alarm device as described in claim 8, characterized in that: The control module of the rotating equipment (11) is connected to the central control room terminal signal. When the alarm controller continuously receives the trigger signal from the infrared human body sensor (10) for more than a preset time, the central control room terminal can send a stop command to the rotating equipment (11) through the control module.

10. The electrical and rotating equipment isolation and protection alarm device as described in claim 9, characterized in that: The face recognition module (5) has a built-in storage unit that can record the information and timestamp of each verified person. The storage unit communicates with the alarm controller to form a linkage record between personnel access and hazard monitoring.

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