Elevator pit detection system

Abstract

The utility model discloses an elevator pit detection system which comprises a human body infrared induction switch, a detection device, an alarm, a broken belt roll and a broken belt detection switch which are arranged in an elevator pit, the broken belt roll is arranged on one side of the elevator pit, and the other side of the elevator pit is provided with the broken belt detection switch corresponding to the broken belt roll. A broken belt of the broken belt roll is pulled to the other side of the elevator pit and connected with the broken belt detection switch, the human body infrared induction switch and the broken belt detection switch are connected with the signal input end of the detection device, and the signal output end of the detection device is connected with the alarm and the elevator system. The pit detection function is achieved through the human body infrared induction switch and the belt breakage detection switch, when the human body infrared induction switch and the belt breakage detection switch detect abnormities, signals are sent to an elevator system, an elevator reports faults, the elevator stops running, the situation that people die accidentally in a pit is avoided, and the safety of the elevator is guaranteed. And the safety of the elevator is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, and in particular to an elevator pit detection system. Background Art

[0002] The elevator industry has relatively weak safety precautions for elevator pits. Currently, there have been many cases of missing persons who were eventually found dead in the elevator pit. According to statistics, most of these persons are maintenance personnel and property personnel. The reason for this is that maintenance personnel violated regulations during maintenance and property personnel violated regulations during inspections, causing them to fall into the pit or be injured in the pit and lose their mobility or even become comatose, which led to continued bleeding and eventual death. If rescue is carried out in time, such deaths can be avoided, greatly improving the safety of elevators. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the prior art and provide an elevator pit detection system.

[0004] The technical solution of the utility model is as follows:

[0005] An elevator pit detection system comprises a human infrared sensing switch, a detection device, an alarm, a broken belt roll and a broken belt detection switch arranged in the elevator pit, wherein the broken belt roll is arranged at one side of the elevator pit, and the broken belt detection switch is arranged at the other side of the elevator pit corresponding to the broken belt roll, the broken belt of the broken belt roll is pulled to the other side of the elevator pit and connected to the broken belt detection switch, the human infrared sensing switch and the broken belt detection switch are respectively connected to the signal input end of the detection device, and the signal output end of the detection device is respectively connected to the alarm and the elevator system.

[0006] Furthermore, a plurality of broken belt reels and broken belt detection switches are arranged on adjacent sides of the elevator pit, and a broken belt of each broken belt reel is connected to a corresponding broken belt detection switch.

[0007] Furthermore, the detection device includes an MCU and a SIM card, the MCU is respectively connected to a human infrared sensing switch and a plurality of broken belt detection switch signals, and the SIM card is connected to the MCU.

[0008] Furthermore, the detection device is provided with an antenna.

[0009] Furthermore, the detection device has a built-in battery, and the battery is connected to the MCU and the alarm through wires respectively.

[0010] Furthermore, the battery is connected to an external power supply.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: The present utility model has a pit detection function, which is realized through a human body infrared induction switch and a belt break detection switch. When the human body infrared induction switch and the belt break detection switch detect abnormalities, they send signals to the elevator system, and the elevator reports a fault (foreign objects in the pit), and the elevator stops running, avoiding the occurrence of accidental deaths of personnel in the pit and greatly improving the safety of the elevator. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0013] Figure 1 Side view of an elevator pit detection system provided by the present utility model;

[0014] Figure 2 Top view of an elevator pit detection system provided by the present utility model;

[0015] Figure 3 Circuit schematic diagram of an elevator pit detection system provided by the present utility model;

[0016] Figure 4 Method schematic diagram of an elevator pit detection system provided by the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0018] In order to illustrate the technical solutions described in the present utility model, the following will be described through specific embodiments.

[0019] Embodiment

[0020] Please refer to Figures 1 to 3The present embodiment provides an elevator pit detection system, comprising a human infrared sensing switch 1, a detection device 2, an alarm 3, a plurality of broken belt reels 4 and a plurality of broken belt detection switches 5 arranged in the elevator pit, a plurality of broken belt reels 4 and a plurality of broken belt detection switches 5 are arranged on adjacent sides of the elevator pit, the broken belt detection switch 5 is located on the opposite side of the broken belt reel 4, the broken belt 41 of each broken belt reel 4 is pulled to the other side of the elevator pit and connected to a broken belt detection switch 5, the human infrared sensing switch 1 and the broken belt detection switch 5 are respectively connected to the signal input end of the detection device 2, and the signal output end of the detection device 2 is respectively connected to the alarm 3 and the elevator system.

[0021] Specifically, the detection device 2 includes an MCU and a SIM card. The MCU is respectively connected to the human infrared sensing switch 1 and a plurality of broken belt detection switches 5 by signal. The SIM card is connected to the MCU. The detection device 2 is provided with an antenna.

[0022] Combination Figure 4 As shown, when the human infrared sensing switch 1 detects an abnormality, it sends a signal to the elevator system, the elevator reports a fault (there is a foreign object in the pit), the elevator stops running, and the on-site alarm 3 sounds an alarm, and a wireless distress signal is dialed; when the broken belt detection switch 5 detects an abnormality, it sends a signal to the elevator system, the elevator reports a fault (there is a foreign object in the pit), and the elevator stops running.

[0023] In this embodiment, the detection device 2 has a built-in battery, which is connected to an external power supply. The battery is connected to the MCU and the alarm 3 through wires respectively. When the elevator has no power, the detection device 2 can still detect the pit.

[0024] When the elevator is powered: the detection logic of the detection device is as follows Figure 4 ;

[0025] When the elevator has no power: Because the detection device has a built-in battery, it still has the function of pit detection. The difference is that when the elevator has no power, the detection device detects the abnormality and sends a signal to the elevator system, requiring the elevator system to stop running. At this time, the elevator system has no power. Although the elevator system cannot execute the stop operation command, it is equivalent to stopping operation.

[0026] Therefore, the detection logic is the same regardless of whether the elevator system has power or not.

[0027] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An elevator pit detection system, characterized in that: The invention comprises a human infrared sensing switch, a detection device, an alarm, a broken belt roll and a broken belt detection switch arranged in an elevator pit, wherein the broken belt roll is arranged at one side of the elevator pit, and a broken belt detection switch is arranged at the other side of the elevator pit corresponding to the broken belt roll, the broken belt of the broken belt roll is pulled to the other side of the elevator pit and connected to the broken belt detection switch, the human infrared sensing switch and the broken belt detection switch are respectively connected to the signal input end of the detection device, and the signal output end of the detection device is respectively connected to the alarm and the elevator system.

2. An elevator pit detection system according to claim 1, characterized in that: A plurality of broken belt reels and broken belt detection switches are arranged on adjacent two sides of the elevator pit, and a broken belt of each broken belt reel is correspondingly connected to a broken belt detection switch.

3. An elevator pit detection system according to claim 2, characterized in that: The detection device comprises an MCU and a SIM card. The MCU is respectively connected to a human infrared induction switch and a plurality of broken belt detection switch signals, and the SIM card is connected to the MCU.

4. An elevator pit detection system according to claim 3, characterized in that: The detection device is provided with an antenna.

5. An elevator pit detection system according to claim 3, characterized in that: The detection device is equipped with a built-in battery, and the battery is connected to the MCU and the alarm through wires respectively.

6. An elevator pit detection system according to claim 5, characterized in that: The battery is connected to an external power supply.

Images