CN212076063U

CN212076063U - Elevator button non-contact execution device based on position detection

Info

Publication number: CN212076063U
Application number: CN202020447850.7U
Authority: CN
Inventors: 张宇翔
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-12-04
Anticipated expiration: 2030-03-31

Abstract

A non-contact execution device of an elevator key based on position detection can realize non-contact execution of the elevator key. The device comprises 1-3 distance sensors arranged right above the operation panel of the existing elevator, and each sensor vertically downwards corresponds to each row of keys. The corresponding keys are judged by the microprocessor through detecting the real-time position distance of the human fingers, and corresponding signals are output to communicate with the elevator control, so that the functions of the corresponding elevator keys are realized. This device adopts one kind of laser TOF distance sensor of miniature high accuracy, and safe and reliable, the range finding precision is high, and the response is fast, and the size is little, and the low power dissipation is with controllable costs, can use by market popularization completely. The utility model discloses having put forth effort to solve all sorts of drawbacks that current contact elevator button needs frequent contact to lead to, being adapted to the crowded public places such as hospital, station, market, can avoid button wearing and tearing, safety and sanitation again.

Description

Elevator button non-contact execution device based on position detection

Technical Field

The utility model belongs to an automatic execution control device relates to a non-contact execution of elevator button, also can be used to the non-contact execution of other buttons.

Background

The elevator operation in the existing market is mainly contact buttons, people control the elevator and need frequently contact buttons, button surface abrasion is easily caused, and the buttons are out of order. More importantly, various fingerprints, sweat stains, bacteria and viruses can be attached to the key panel. Is neither safe nor sanitary, and is easy to cause germ transmission and cross infection in hospitals, markets, stations and other public places with dense people streams.

Especially, during the epidemic situation of the infectious disease, the hands are prevented from directly contacting the elevator keys, and the non-contact elevator keys are recommended to prevent the cross infection and control the epidemic situation.

Relevant current effective patents are looked up, and for solving the above problems, one type is non-contact inductive switch, and the existing elevator switch needs to be replaced by the inductive switch, so that the engineering is large, the cost is high, the existing structure of the elevator is changed, potential safety hazards exist, and the market application cannot be realized.

Another type is a close proximity non-contact type elevator key panel and a control method thereof, such as application publication No. CN 104991637 a filed in 2015. The patent technology has the following disadvantages that the technology is almost impossible to put into practical use.

1) The output power of the infrared laser is more than 50mW, and the infrared laser belongs to IIIB level (the power range is 5-500 mW) according to the laser safety level classification, is harmful to human eyes and cannot be used in an elevator;

2) the patent device does not describe how the field of view covers all the keys of the elevator key panel;

3) the patent device does not show the specific measurement precision which can be achieved, and a large amount of misjudgments and instability can occur;

4) the device is complex in software and hardware, large in size, high in cost and incapable of being popularized and used.

Disclosure of Invention

The utility model provides a there is the drawback in order to overcome current contact type button, and adopts the non-contact to carry out the device of button function, can be used to the elevator button, also can be used to other various buttons. The method can be used for elevators manufactured by elevator manufacturing factories in a brand-new way and can also be used for the reconstruction of the existing running elevators.

The utility model discloses by the first kind laser ToF distance sensor of 1-3 high accuracy of a shell integration, a single chip microcomputer control unit, one constitutes with the interface of elevator master control communication, arrange in directly over current elevator operating panel or integrated and in elevator car top, every sensor corresponds every button that is listed as perpendicularly downwards, and the sensor lateral position is adjustable to the elevator key panel that adapts to the difference arranges, and ensures to cover all buttons of elevator key panel. When a human finger selects different keys, the finger is positioned at a position which is 1-2cm away from the surface of the key vertically and is not contacted with the key, the sensor above the finger can measure the actual distance of the finger, the singlechip reads the distance corresponding to the opposite key, and the corresponding key is displayed on the display panel. In order to prevent misjudgment, the fingers are suggested to pause for 1 second, the keys display no change for 1 second, and then signals are transmitted to the elevator to execute corresponding key functions.

The single chip microcomputer of the device adopts STM 32;

the utility model discloses the device compares with similar device has following advantage:

1) the size is small, the structure is compact, and the installation is simple and convenient;

2) a high-precision ToF distance sensor is selected, a laser transmitter is 940 nm invisible light, and the high-precision ToF distance sensor belongs to Class1, and is safe and reliable;

3) the range measurement range is as follows: 40-4000 mm, and programming according to requirements;

4) distance measurement precision: +/-5%, can meet the practical requirement;

5) 1 or more distance sensors are adopted according to requirements, each sensor is only responsible for detecting a row of keys and covers all keys of the elevator key panel together;

6) the visual field range of the sensors is adjustable, so that each sensor can only detect one row of keys right below and is not interfered by other rows;

7) the method does not change the original structure of the elevator and can be used for the elevator which is already in operation.

Drawings

Fig. 1 is a schematic view of the structure and installation of the device of the utility model:

in the drawings

(1) No. 1 sensor

(2) No. 2 sensor

(3) No. 3 sensor

(4) Microprocessor single-chip computer and communication interface

(5) Device shell

(6) Simulation elevator key panel

(7) Distance labels A, B

Fig. 2 is a flowchart of the program executed by the utility model device.

Detailed Description

Combine attached figure 1 the utility model discloses by the integrated 1-3 a kind of laser ToF distance sensor of high accuracy of a shell, a single chip microcomputer control unit, one constitutes with the interface of elevator master control communication, arrange in directly over current elevator operating panel or integrated and in elevator car top, every sensor corresponds every button downwards perpendicularly, and the sensor lateral position is adjustable to the elevator key panel that adapts to the difference arranges, and ensures to cover all buttons of elevator key panel. The execution flow is as shown in figure 2, when a human finger selects different keys, the finger is positioned at a position 1-2cm away from the surface of the key vertically and does not contact with the key, the sensor above the finger can measure the actual position distance of the finger in real time, the single chip microcomputer calculates and judges the selected key according to the one-to-one correspondence relationship between the keys and the position distances detected in real time shown in table 1, and the corresponding key is displayed on the display panel. In order to prevent misjudgment, the fingers stop for 1 second, the keys display no change for 1 second, and then signals are transmitted to the elevator to execute corresponding key functions.

Table 1: corresponding relation between distance measured by sensor and elevator panel key

(1) Table 2 note 1: diameter phi of 30mm for key size

(2) Table 2 note 2: the positions of the sensors can be arranged according to different elevator key panels, and the values of A and B can be set.

Claims

1. The elevator key non-contact execution device based on position detection is composed of a shell integrated sensor, a single chip microcomputer control unit and a communication interface, is arranged right above an existing elevator operation panel or integrated with the top of an elevator car, and is characterized in that 1 high-precision laser distance sensor corresponds to each row of elevator keys, the sensors are used for detecting the distance position of a key finger and the transverse position of the sensor in real time to judge a selected key, and signals are output to the elevator to realize corresponding key functions.

2. The elevator key non-contact executing device based on the position detection as claimed in claim 1, characterized in that the laser source of the laser ToF distance sensor is a laser of a kind, which is safe and reliable.

3. The elevator key non-contact actuator based on position detection as claimed in claim 1, wherein the laser ToF distance sensor has an adjustable field of view to accommodate different installation positions.

4. The position detection-based elevator key non-contact actuating device according to claim 1, wherein the distance sensor is laterally arranged and position-adjustable to adapt to different elevator key panel arrangements.

5. The elevator key non-contact executing device based on position detection as claimed in claim 1, wherein a digital display and an audio prompt can be selected.