Elevator maintenance safety warning device

Abstract

The utility model relates to the technical field of elevator maintenance equipment, in particular to an elevator maintenance safety warning device which comprises two detection devices installed in an elevator pit and a top layer respectively, a wireless relay connected to an elevator safety loop in series and a plurality of wireless repeaters installed on an elevator shaft at intervals. The detection device comprises more than one human body recognition sensor module, a power supply module, a processor module and a wireless communication module; the power module is electrically connected with a power port of the processor module, and the human body recognition sensor module and the wireless communication module are electrically connected with the processor module. And the wireless communication module is in wireless communication connection with the wireless relay through each wireless repeater. The elevator maintenance safety warning device can intelligently recognize that a maintainer enters a pit / top layer of an elevator, and automatically disconnect an elevator safety circuit to prevent the elevator from moving in the maintenance process.

Description

Technical Field

[0001] This utility model relates to the field of elevator maintenance equipment technology, and in particular to an elevator maintenance safety warning device. Background Technology

[0002] Nowadays, many self-built houses are equipped with home elevators. However, some self-built houses are not constructed according to regulations, making it impossible to excavate a pit, and the top floor height is relatively small, resulting in shallow pits (250mm-500mm) and low top floors (200mm-1000mm) for home elevators. This leaves insufficient safety space for maintenance personnel. Generally, maintenance personnel are required to strictly follow regulations during maintenance, including but not limited to: opening the landing door – disconnecting the emergency travel switch on the car top – pulling the maintenance switch – closing the landing door – and restoring the emergency stop switch. However, in practice, some maintenance personnel, seeking convenience, enter the elevator pit / top floor and begin work immediately after closing the landing door, leading to dangerous accidents. Such accidents occur frequently. Utility Model Content

[0003] Therefore, in response to the above problems, this utility model proposes an elevator maintenance safety warning device that can intelligently identify when maintenance personnel enter the elevator pit / top floor and automatically disconnect the elevator safety circuit to prevent the elevator from moving during maintenance.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An elevator maintenance safety warning device includes two detection devices installed in the elevator pit and the top floor respectively, a wireless relay connected in series in the elevator safety circuit, and multiple wireless repeaters installed at intervals in the elevator shaft.

[0006] The detection device includes one or more human body recognition sensor modules, a power supply module, a processor module, and a wireless communication module;

[0007] The power supply module is electrically connected to the power port of the processor module, and the human body recognition sensor module and the wireless communication module are electrically connected to the processor module respectively.

[0008] The wireless communication module establishes a wireless communication connection with the wireless relays through each wireless repeater.

[0009] Furthermore, it also includes a wireless audible and visual alarm device, which is installed near the location of the elevator safety circuit;

[0010] The wireless communication module establishes a wireless communication connection with the wireless audible and visual alarm device through each wireless repeater.

[0011] Furthermore, the wireless relay is a WiFi relay; the wireless communication module is a WiFi communication module; the wireless repeater is a WiFi repeater; and the wireless audible and visual alarm device is a wireless WiFi audible and visual alarm.

[0012] Furthermore, the wireless relay is a Zigbee relay; the wireless communication module is a Zigbee communication module; the wireless repeater is a Zigbee repeater; and the wireless audible and visual alarm device is a wireless Zigbee audible and visual alarm.

[0013] Furthermore, the detection device also includes a lighting device;

[0014] The lighting device is electrically connected to the processor module.

[0015] Furthermore, the human body recognition sensor module employs any one or a combination of visual recognition sensors, infrared sensors, and millimeter-wave radar sensors.

[0016] By adopting the aforementioned technical solution, the beneficial effects of this utility model are:

[0017] This elevator maintenance safety warning device uses detection units in the elevator pit and top floor. When the human recognition sensor module of the detection unit detects maintenance personnel entering the elevator pit or top floor, it sends a command via wireless communication module through wireless repeaters to the wireless relays connected in series in the elevator safety circuit, cutting off the elevator safety circuit and stopping the elevator. This ensures that the elevator will not move while maintenance personnel are performing maintenance in the pit or top floor, thus preventing dangerous accidents. Furthermore, when maintenance personnel are detected entering the elevator pit or top floor, the lighting device automatically turns on to facilitate maintenance work. Additionally, when maintenance personnel are detected entering the elevator pit or top floor, the wireless audible and visual alarm device sounds an alarm and displays a warning light to alert nearby personnel that maintenance personnel are performing maintenance work in the elevator pit or top floor and to prevent them from operating the elevator safety circuit. Attached Figure Description

[0018] Figure 1 This is a circuit connection block diagram of this utility model. Detailed Implementation

[0019] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0020] refer to Figure 1This embodiment provides an elevator maintenance safety warning device, including two detection devices 1 installed in the elevator pit and the top floor respectively, a wireless relay 3 connected in series in the elevator safety circuit, multiple wireless repeaters 2 installed at intervals in the elevator shaft (not shown in the figure), and a wireless audible and visual alarm device installed near the location of the elevator safety circuit (not shown in the figure). It should be noted that the spacing between the wireless repeaters 2 should ensure that adjacent wireless repeaters 2 maintain good wireless communication signals.

[0021] The elevator safety circuit consists of a safety switch installed in each safety component of the elevator (such as the upper and lower limit switches in the elevator shaft, the emergency stop switch in the elevator car, etc.). All these safety switches are connected in series to control a safety relay. Only when all safety switches are closed will the safety relay activate, allowing the elevator to operate. The elevator safety circuit is a well-known technology in this field, and those skilled in the art should understand the circuit connection method of the wireless relay 3 connected in series in the elevator safety circuit, as well as the location of the elevator safety circuit; therefore, it will not be described in detail here.

[0022] The detection device 1 includes a processor module 11, a power supply module 12, a lighting device 13, one or more human body recognition sensor modules 14, and a wireless communication module 15. It should be noted that the human body recognition sensor module 14 should be installed in a way that allows it to detect a person entering the elevator pit or top floor. The lighting device 13 should be installed in a way that illuminates the elevator pit or top floor. The selection of the installation positions of the lighting device 13 and the human body recognition sensor module 14 is a conventional technique in the art and will not be described in detail here.

[0023] The processor module 11, power module 12, lighting device 13, human body recognition sensor module 14, wireless communication module 15, wireless repeater 2, wireless relay 3, and wireless audible and visual alarm device 4 mentioned above are all existing electronic devices. Those skilled in the art should understand the conventional selection of the above-mentioned electronic devices. In this specific embodiment, preferably, the processor module 11 uses an ESP32-S3-WROOM-1-NxR8 module, and the human body recognition sensor module 14 uses an infrared sensor. The wireless relay uses a WiFi relay; the wireless communication module uses a WiFi communication module; the wireless repeater uses a WiFi repeater; and the wireless audible and visual alarm device uses a wireless WiFi audible and visual alarm.

[0024] The power module 12 is electrically connected to the power port of the processor module 11, providing power to the processor module. The lighting device 13, the wireless communication module 15, and each human body recognition sensor module 14 are electrically connected to the processor module 11. The wireless communication module 15 establishes a wireless communication connection with the wireless relays 3 through each wireless repeater 2. The wireless communication module 15 also establishes a wireless communication connection with the wireless audible and visual alarm device 4 through each wireless repeater 2.

[0025] In use, when the human body recognition sensor module 14 of the detection device 1 detects that maintenance personnel have entered the elevator pit or top floor, the lighting device 13 is automatically turned on to illuminate the elevator pit or top floor, facilitating maintenance work. It also controls the wireless sound and light alarm device 4 to emit an alarm sound and light warning to remind surrounding personnel that maintenance personnel are performing maintenance work in the elevator pit or top floor and not to operate the elevator safety circuit. At the same time, the wireless communication module 15 sends a command through each wireless repeater 2 to the wireless relay 3 connected in series in the elevator safety circuit to cut off the elevator safety circuit, causing the elevator to stop running. This ensures that the elevator will not move when maintenance personnel are performing maintenance in the elevator pit or top floor, thereby preventing dangerous accidents.

[0026] The wireless relay 3 mentioned above can also be a Zigbee relay; the wireless communication module 15 can also be a Zigbee communication module; the wireless repeater 2 can also be a Zigbee repeater; and the wireless audible and visual alarm device 4 can also be a wireless Zigbee audible and visual alarm.

[0027] The aforementioned wireless relay 3 can also be a Bluetooth relay; the wireless communication module 15 can also be a Bluetooth communication module; the wireless repeater 2 can also be a Bluetooth repeater; and the wireless audible and visual alarm device 4 can also be a wireless Bluetooth audible and visual alarm.

[0028] The human body recognition sensor module 14 described above can also be a visual recognition sensor or a millimeter-wave radar sensor; or any combination of an infrared sensor, a visual recognition sensor and a millimeter-wave radar sensor.

[0029] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. An elevator maintenance safety warning device, characterized in that: It includes two detection devices installed in the elevator pit and the top floor respectively, a wireless relay connected in series in the elevator safety circuit, and multiple wireless repeaters installed at intervals in the elevator shaft; The detection device includes one or more human body recognition sensor modules, a power supply module, a processor module, and a wireless communication module; The power supply module is electrically connected to the power port of the processor module, and the human body recognition sensor module and the wireless communication module are electrically connected to the processor module respectively. The wireless communication module establishes a wireless communication connection with the wireless relays through each wireless repeater.

2. The elevator maintenance safety warning device according to claim 1, characterized in that: It also includes a wireless audible and visual alarm device, which is installed near the location of the elevator safety circuit; The wireless communication module establishes a wireless communication connection with the wireless audible and visual alarm device through each wireless repeater.

3. The elevator maintenance safety warning device according to claim 2, characterized in that: The wireless relay is a WiFi relay; the wireless communication module is a WiFi communication module; the wireless repeater is a WiFi repeater; and the wireless audible and visual alarm device is a wireless WiFi audible and visual alarm.

4. The elevator maintenance safety warning device according to claim 2, characterized in that: The wireless relay is a Zigbee relay; the wireless communication module is a Zigbee communication module; the wireless repeater is a Zigbee repeater; and the wireless audible and visual alarm device is a wireless Zigbee audible and visual alarm.

5. The elevator maintenance safety warning device according to claim 1, characterized in that: The detection device also includes a lighting device; The lighting device is electrically connected to the processor module.

6. The elevator maintenance safety warning device according to claim 1, characterized in that: The human body recognition sensor module employs any one or a combination of visual recognition sensors, infrared sensors, and millimeter-wave radar sensors.

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