Automatic detection and alarm device for abnormal opening of elevator landing door

Abstract

The utility model discloses an automatic detection and alarm device for abnormal opening of an elevator landing door. The automatic detection and alarm device comprises a landing door state sensor, a lift car distance sensor, a lift car position sensor, a microprocessor MCU and a floor buzzer. The landing door state sensors are installed at landing doors of all floors and used for detecting opening or closing of the landing doors. The lift car distance sensors are installed on the door heads of landing doors of all floors and used for detecting the distance between lift cars and the landing doors. The lift car position sensor is mounted on a lift car and used for detecting the number of floors where the lift car is located; the floor buzzers are installed on landing doors of all floors and used for giving out alarm sounds. The microprocessor MCU receives information collected by the landing door state sensor, the lift car distance sensor and the lift car position sensor, analyzes and judges the information and then sends an instruction to the floor buzzer. According to the utility model, the functions of automatic detection and alarm for abnormal opening of the elevator landing door can be realized, so that safety accidents caused by abnormal opening of the landing door are avoided, and the use safety of the elevator is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to elevator safety technical field, concretely relates to an automatic detection and alarm device of elevator landing door abnormal opening. BACKGROUND

[0002] At present, elevator is the most convenient and fast vertical transport tool for people to enter high-rise building. However, as special equipment, elevator also has certain safety risk in use. Through elevator accident cause analysis in recent years, the accident caused by elevator door system accident accounts for a large proportion. Moreover, some falling accidents are caused by landing door abnormal opening. Although the elevator is provided with the elevator door preventing door from clamping person device, emergency unlocking and door lock protection device and car door mechanical lock protection device at present, the preventing door from clamping person device plays a role when passenger enters or exits the car, the emergency unlocking device and door lock protection device play a role when rescuing, and the car door mechanical lock can prevent passenger from opening the elevator in the car, but when the landing door is abnormally opened, these protection devices cannot remind the passengers waiting for the car, and they may choose to enter the car because of seeing the landing door open, so the falling accident occurs. CONTENT OF UTILITY MODEL

[0003] The utility model aims at overcoming the insufficient of prior art, and provides an automatic detection and alarm device of elevator landing door abnormal opening.

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

[0005] An automatic detection and alarm device of elevator landing door abnormal opening, including landing door state inductor, car distance inductor, car position inductor, microprocessor MCU and floor buzzer;

[0006] The landing door state inductor is installed at the landing door of each floor, and is used for detecting the opening or closing of the landing door, and is connected with the signal input end of the microprocessor MCU;

[0007] The car distance inductor is installed on the door head of the landing door of each floor, and is used for detecting the distance between the car and the landing door, and is connected with the signal input end of the microprocessor MCU;

[0008] The car position inductor is installed on the car, and is used for detecting the number of layers where the car is, and is connected with the signal input end of the microprocessor MCU, and the car position inductive plate is installed on the shaft wall of the elevator shaft corresponding to the landing position of each floor;

[0009] The floor buzzer is installed on the landing door of each floor, and is used for emitting alarm sound, and is connected with the signal output end of the microprocessor MCU;

[0010] The microprocessor MCU sends a command to the floor buzzer after receiving and analyzing the information collected by the floor door state sensor, the car distance sensor and the car position sensor.

[0011] Further, the floor door state sensor and the car distance sensor are connected to the microprocessor MCU through a floor door state detection board, and the floor door state detection board and the microprocessor MCU are connected through RS485 communication.

[0012] Further, the car distance sensor includes an upper sensor and a lower sensor, which are installed on the car in an up-down manner, and the upper sensor and the lower sensor are connected to the microprocessor MCU through a car roof detection board, and the car roof detection board and the microprocessor MCU are connected through CAN communication.

[0013] Further, the device further comprises a machine room buzzer and an indicator light installed in the elevator machine room, which are respectively connected to the signal output end of the microprocessor MCU.

[0014] Compared with the prior art, the beneficial effects of the utility model are that: the utility model includes a floor door state sensor, a car distance sensor, a car position sensor, a microprocessor MCU and a floor buzzer. Among them, the floor door state sensor is installed at the floor door of each floor, which is used for detecting the opening or closing of the floor door; the car distance sensor is installed on the door head of the floor door of each floor, which is used for detecting the distance between the car and the floor door; the car position sensor is installed on the car, which is used for detecting the number of floors where the car is located; the floor buzzer is installed on the floor door of each floor, which is used for emitting an alarm sound; the microprocessor MCU collects the current floor transmitted by the car position sensor, and matches it with the floor number transmitted by the floor door state sensor. If they are the same, the alarm is not started, and if they are not the same, the alarm is started, and the floor buzzer emits an alarm sound to warn the elevator user that the elevator is abnormal and not to walk into the elevator, effectively avoiding the safety accidents caused by the abnormal opening of the floor door; in addition, the microprocessor MCU also analyzes and judges the distance information collected by the car distance sensor, and if the distance between the car and the floor door is greater than the safety distance, the microprocessor MCU will send a highest warning command to the floor buzzer, and the floor buzzer will emit a larger alarm sound at this time, so as to avoid the injury accidents caused by the distraction of the elevator user playing the mobile phone, and improve the safety of the elevator use. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0016] Figure 1 A system block diagram of the automatic detection and alarm device for abnormal opening of the elevator landing door provided by the present application is provided.

[0017] Figure 2 A principle block diagram of the automatic detection and alarm device for abnormal opening of the elevator landing door provided by the present application is provided. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the present application more clearly, the present application will be further described in detail below with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0019] In order to illustrate the technical scheme of the present application, the following will be described by specific embodiments.

[0020] EMBODIMENT

[0021] Please refer to Figure 1 The present embodiment provides an automatic detection and alarm device for abnormal opening of the elevator landing door, which comprises a landing door state sensor, a car distance sensor, a car position sensor, a microprocessor MCU, a floor buzzer, a machine room buzzer and an indicator light. The landing door state sensor is installed at the landing door of each floor, and is used to detect the opening or closing of the landing door, and is connected with the signal input end of the microprocessor MCU. The car distance sensor is installed on the door head of the landing door of each floor, and is used to detect the distance between the car and the landing door, and is connected with the signal input end of the microprocessor MCU. The car position sensor is installed on the car, and is used to detect the number of floors where the car is located, and is connected with the signal input end of the microprocessor MCU. The car position sensing plate is installed on the wall of the elevator shaft corresponding to the landing position of each floor. The floor buzzer is installed on the landing door of each floor, and is used to emit alarm sound, and is connected with the signal output end of the microprocessor MCU. The machine room buzzer and the indicator light are installed in the elevator machine room, and the machine room buzzer and the indicator light are respectively connected with the signal output end of the microprocessor MCU. The microprocessor MCU receives the information collected by the landing door state sensor, the car distance sensor and the car position sensor, and analyzes and judges, and then sends instructions to the floor buzzer, the machine room buzzer and the indicator light.

[0022] In combination Figure 2As shown:

[0023] The layer door state sensor and the car distance sensor are connected with the microprocessor MCU through the layer door state detection plate. Each layer door is installed with a layer door state detection plate, which can set the floor address code. Through the layer door state sensor and the car distance sensor, the state of each floor door and the distance between the layer door and the car door can be known. The layer door state detection plate transmits the detected information to the microprocessor MCU through RS485 communication. The floor buzzer is installed at the layer door. When the layer door of the current floor is abnormally opened, the floor buzzer will sound.

[0024] When the elevator has a front door and a rear door, the layer door state detection plate, the layer door state sensor and the car distance sensor need to be installed. The address code of the rear door detection plate is 64 added to the address code of the front door of the current floor.

[0025] The car distance sensor includes an upper sensor and a lower sensor. The upper sensor and the lower sensor are installed on the car in an up-down manner. The installation distance between the two sensors is not more than 200mm, which meets the requirement of the elevator unlocking area. The upper sensor and the lower sensor are connected with the microprocessor MCU through the car roof detection plate. When the upper sensor and the lower sensor detect the car position sensing plate, it is a leveling position. The signals of the upper sensor and the lower sensor are transmitted to the car roof detection plate and then transmitted to the microprocessor MCU of the control board through CAN communication. The control board is installed in the elevator machine room, which is provided with a machine room buzzer and an indicator light. When the layer door of any floor is abnormally opened, the machine room buzzer will sound and the indicator light will light up.

[0026] After the installation of the elevator is completed, the floor position self-learning function of the device is started when the shaft self-learning is performed. When the car position sensor passes through the leveling position of each floor, the signal changes once and is transmitted to the microprocessor MCU. The microprocessor MCU records the floors (starting from the first floor and learning upwards, and automatically increasing a floor each time the car position sensor signal changes) and stores them in the memory of the microprocessor MCU. The number of floors where the car is located is detected by the car position sensor.

[0027] The microprocessor MCU collects the current floor transmitted by the car position sensor and matches it with the number of floors transmitted by the layer door state sensor. If they are the same, the alarm is not started. If they are not the same, the alarm is started. The buzzer emits an alarm sound, and the warning light emits a pre-warning flashing light to warn the elevator user that the elevator is abnormal and not to enter the elevator, effectively avoiding safety accidents caused by abnormal opening of the layer door.

[0028] The microprocessor MCU also analyzes and judges the distance information collected by the car distance sensor, when the car and the landing door are in the same position, the distance detected by the car distance sensor is very short (a safety distance can be given according to the actual situation of the elevator, for example, not more than 200mm), which meets the safety distance, when the car and the landing door are not in the same position, the distance detected by the car distance sensor is greater than the safety distance, if the distance between the car and the landing door is greater than the safety distance, a highest warning command is sent to the buzzer, at this time, the buzzer emits a larger warning sound, and the warning light emits a brighter warning light, so as to avoid that the passenger plays the mobile phone, the attention is distracted, and the injury accident is caused by mistake, and the safety of the elevator use is improved.

[0029] The device also includes a backup power module, which can avoid the alarm device from being invalid due to power failure, and improve the reliability of the landing door abnormal opening alarm device.

[0030] The above is only a preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An automatic detection and alarm device for abnormal opening of elevator landing doors, characterized in that: It includes a landing door status sensor, a car distance sensor, a car position sensor, a microprocessor (MCU), and a floor buzzer; The landing door status sensor is installed at the landing door on each floor to detect whether the landing door is open or closed, and it is connected to the signal input terminal of the microprocessor MCU. The car distance sensor is installed on the landing door head of each floor to detect the distance between the car and the landing door, and it is connected to the signal input terminal of the microprocessor MCU. The car position sensor is installed on the car to detect the floor number where the car is located. It is connected to the signal input terminal of the microprocessor MCU. A car position sensor plate is installed on the wall of the elevator shaft corresponding to the level position of each floor. The floor buzzer is installed on the landing door of each floor to emit an alarm sound, and it is connected to the signal output terminal of the microprocessor MCU; The microprocessor (MCU) receives and analyzes information collected by the landing door status sensor, car distance sensor, and car position sensor, and then sends instructions to the floor buzzer.

2. The automatic detection and alarm device for abnormal opening of elevator landing doors according to claim 1, characterized in that: The landing door status sensor and the car distance sensor are connected to the microprocessor (MCU) via the landing door status detection board, and the landing door status detection board communicates with the microprocessor (MCU) via RS485.

3. The automatic detection and alarm device for abnormal opening of elevator landing doors according to claim 1, characterized in that: The car distance sensor includes an upper sensor and a lower sensor, which are mounted vertically on the car. The upper sensor and the lower sensor are connected to the microprocessor (MCU) via a car top detection board, and the car top detection board communicates with the microprocessor (MCU) via CAN.

4. The automatic detection and alarm device for abnormal opening of elevator landing doors according to claim 1, characterized in that: The device also includes a machine room buzzer and indicator lights installed in the elevator machine room, which are respectively connected to the signal output terminal of the microprocessor MCU.

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