CN216686991U

CN216686991U - Non-contact elevator floor calling system based on Bluetooth, voice and face recognition

Info

Publication number: CN216686991U
Application number: CN202121506289.6U
Authority: CN
Inventors: 韩铮
Original assignee: Shanghai Zhengshi Photoelectric Technology Co ltd
Current assignee: Shanghai Zhengshi Photoelectric Technology Co ltd
Priority date: 2021-07-02
Filing date: 2021-07-02
Publication date: 2022-06-07
Anticipated expiration: 2031-07-02

Abstract

The utility model discloses a non-contact elevator floor calling system based on Bluetooth, voice and face recognition, which is characterized by comprising a microcomputer and a single chip microcomputer module, wherein a signal acquisition end of the microcomputer is respectively connected with a camera and a microphone; the data interaction port of the microcomputer is connected with the data interaction port of the single chip microcomputer module, and meanwhile, the microcomputer supplies power to the single chip microcomputer module; a mobile intelligent terminal carried by a user in the elevator car establishes data communication with the singlechip module through the Bluetooth module; the single chip microcomputer module is further connected with a display module arranged in the elevator car. The utility model adopts various non-contact induction modes, and improves the identification accuracy of the elevator floor calling system to the floor instruction sent by the user by combining the various non-contact induction modes. Meanwhile, the utility model also avoids carrying and cross infection of virus, bacteria and the like, and inhibits the way of transmitting the virus, the bacteria and the like in the elevator car through physical contact.

Description

Non-contact elevator floor calling system based on Bluetooth, voice and face recognition

Technical Field

The utility model relates to a non-contact car type elevator floor calling system.

Background

Most floor calling systems of the existing car type elevator adopt mechanical keys, and the mechanical keys have the advantages of low cost, low failure rate, simple and convenient maintenance and the like, but have obvious defects: when a user selects a target floor using a mechanical key, the user must touch the mechanical key, so that the mechanical key becomes a carrier for the spread of viruses, bacteria, and the like.

In order to solve the above technical problems, those skilled in the art propose a non-contact floor call system applied to a car elevator, for example:

the chinese utility model patent publication No. CN212127151U, which is disclosed at 11/12/2020, discloses a non-contact type external call panel and an elevator, and the non-contact type external call panel comprises a mounting plate, and further comprises a non-contact key connected to the mounting plate, the non-contact key comprises: a panel including a light-transmitting portion; and the circuit board comprises an infrared proximity sensor, and the infrared proximity sensor transmits light through the light-transmitting part of the panel to be triggered by the detected object. According to the non-contact type outbound panel and the elevator, the light transmission part is arranged on the panel of the non-contact type press key of the non-contact type outbound panel, the infrared proximity sensor is arranged on the circuit board, so that light emitted by the infrared proximity sensor can transmit through the light transmission part of the panel to be triggered by a detected object, a user can trigger the non-contact type press key to send a call instruction when an object such as a finger is close to the non-contact type press key, non-contact elevator taking is realized, and the probability of cross infection of germs is reduced.

The chinese utility model patent publication No. CN212649436U, published 3/2/2021, discloses a novel inductive button, including non-contact inductive module circuit, mechanical microswitch circuit, backlight control circuit, power supply, converting circuit and elevator interface circuit, power supply and converting circuit electric connection, converting circuit and non-contact inductive module circuit electric connection, non-contact inductive module circuit and mechanical microswitch circuit electric connection, non-contact inductive module circuit and backlight control circuit electric connection. The utility model has the functions of mechanical touch and non-contact sensing buttons, and can reduce the condition that the button switch can not act and the like caused by the abrasion and the blocking of a mechanical contact of the traditional button on the one hand; on the other hand, the novel button is safe, sensitive and high in anti-interference capacity, is simple and convenient to install, can be replaced in a direct inserting mode, is suitable for elevators of various types, and has a certain application prospect.

Based on the existing patent documents, the existing floor calling systems applied to the car elevator mostly adopt a single non-contact sensing mode, and the problem that the operation of non-contact elevator keys is easy to be identified by mistake or cannot be identified is solved.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: the floor calling system applied to the existing car elevator mostly adopts a single non-contact induction mode.

In order to solve the technical problems, the technical scheme of the utility model provides a non-contact elevator floor calling system based on Bluetooth, voice and face recognition, which is characterized by comprising a microcomputer and a single chip microcomputer module, wherein a power supply module supplies power to the microcomputer;

the data interaction port of the microcomputer is connected with the data interaction port of the single chip microcomputer module, and meanwhile, the microcomputer supplies power to the single chip microcomputer module; a mobile intelligent terminal carried by a user in the elevator car establishes data communication with the singlechip module through the Bluetooth module; the single chip microcomputer module is also connected with a display module arranged in the elevator car and an elevator system.

Preferably, the microcomputer adopts an ARM system.

Preferably, the ARM system is connected with the single chip microcomputer module through a USB interface.

Preferably, the display module adopts an LED dot matrix screen or a high-definition LED or LCD screen.

The elevator floor calling system provided by the utility model adopts various non-contact induction modes, including a Bluetooth induction mode, a face recognition induction mode and a voice induction mode, and improves the accuracy of the elevator floor calling system in identifying the floor instruction sent by the user through the combination of the various non-contact induction modes. Meanwhile, the utility model also avoids carrying and cross infection of virus, bacteria and the like, and inhibits the way of transmitting the virus, the bacteria and the like in the elevator car through physical contact.

Drawings

Fig. 1 is a system block diagram of the system provided by the present invention during testing.

Detailed Description

The utility model will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.

As shown in fig. 1, the non-contact elevator floor calling system based on bluetooth, voice and face recognition provided by the utility model comprises an ARM system and a single chip microcomputer module. And a data acquisition port of the ARM system is connected with the camera and the microphone. The camera and the microphone are both installed in the elevator car, wherein the camera is used for collecting face images of users in the elevator car, and the microphone is used for collecting voice signals sent by the users in the elevator car. And the power module supplies power to the ARM system.

The ARM system is connected with the single chip microcomputer module through the USB interface, data interaction can be achieved between the ARM system and the single chip microcomputer module through the USB interface, the ARM system can also supply power to the single chip microcomputer module, and an independent power supply module is omitted from being additionally configured for the single chip microcomputer module.

The singlechip module is connected with the Bluetooth module and the LED dot matrix screen or the high-definition LED and the LCD screen. And the user in the car realizes data interaction with the singlechip module through the smart phone carried by the user via the Bluetooth module. The LED dot matrix screen or the high-definition LED and LCD screen is used for displaying the acquired floor digital information.

When the system provided by the utility model is subjected to simulation test, as shown in fig. 1, the singlechip module is connected with the stepping motor through the stepping motor driving module, and the stepping motor simulates the motion of an elevator. Meanwhile, the single chip microcomputer module is also connected with a steering engine, and the steering engine simulates the operation of pressing a button.

The non-contact elevator floor calling system based on Bluetooth, voice and face recognition can work in a Bluetooth mode, a voice recognition mode and a face recognition mode respectively.

Bluetooth mode

1. A resident downloads an elevator APP on a mobile phone;

2. starting Bluetooth, and after the Bluetooth is connected with the singlechip module, starting an elevator APP at a mobile phone end;

3. pressing down a floor to be reached in the elevator APP;

4. floor information is sent to the single chip microcomputer module through Bluetooth, so that the elevator starts to work and reaches a floor required by a resident.

Bluetooth is an open global specification for wireless data and voice communications, and is a special short-range wireless technology connection that establishes a communication environment for fixed and mobile devices based on a low-cost short-range wireless connection. Short-range data exchange (using UHF radio waves in the ISM band of 2.4-2.485 GHz) between fixed equipment, mobile equipment and the building personal area network can be achieved.

Speech recognition mode

1. A microphone in the elevator carries out real-time recording, and when a resident enters the elevator, the resident speaks a floor to be reached;

2, the ARM system automatically carries out voice recognition and extracts floor digital information in the recognition content

And 3, the ARM system sends floor information to the single chip microcomputer module through the USB data serial port, so that the elevator starts to work and reaches a floor required by a resident.

Speech recognition can be implemented based on the following sophisticated approaches:

the system mainly comprises four parts, namely feature extraction, an acoustic model, a language model, a dictionary and decoding, wherein in order to effectively extract features, preprocessing work such as filtering, framing and the like is also needed to be carried out on collected sound signals, and signals to be analyzed are extracted from original signals; then, the feature extraction work converts the sound signal from a time domain to a frequency domain, and provides a proper feature vector for the acoustic model; calculating the score of each feature vector on the acoustic features according to the acoustic characteristics in the acoustic model; the language model calculates the probability of the sound signal corresponding to the possible phrase sequence according to the theory related to linguistics; and finally, decoding the phrase sequence according to the existing dictionary to obtain the final possible text representation.

Face recognition

1. When a resident enters the elevator, the camera in the elevator is opened

2. The camera automatically locks and identifies the face, and the ARM system matches the identified face with the face information of the resident registered in the background;

and 3, the ARM system extracts the floor information and sends the floor information to the single chip microcomputer module, so that the elevator starts to work and reaches the floor required by the resident.

The 3D-based face recognition can be implemented based on several mature ways:

1. 3D structured light

The 3D structured light passes through the infrared light projector, projects light with certain structural characteristics to a shot object, and is collected by a special infrared camera. The method mainly utilizes the principle of similarity of triangles to calculate, so that the depth information of each point on an image is obtained, and finally three-dimensional data is obtained.

2、TOF

The TOF is simply laser ranging, and the irradiation light source generally adopts square wave pulse modulation, and measures and calculates the distance according to the time difference between pulse emission and pulse reception.

3. Binocular stereo vision

Binocular is a method for acquiring three-dimensional geometric information of an object from a plurality of images based on the parallax principle. Two digital images of the measured object are simultaneously obtained from different angles by the two cameras, and three-dimensional geometric information of the object is recovered based on a parallax principle, so that depth information of each point on the image is obtained, and three-dimensional data is finally obtained.

Claims

1. A non-contact elevator floor calling system based on Bluetooth, voice and face recognition is characterized by comprising a microcomputer and a single chip microcomputer module, wherein a power module supplies power to the microcomputer;

2. The non-contact elevator floor calling system based on bluetooth, voice and face recognition as claimed in claim 1, wherein the microcomputer employs an ARM system.

3. The non-contact elevator floor calling system based on Bluetooth, voice and face recognition of claim 2, wherein the ARM system is connected with the single chip microcomputer module through a USB interface.

4. The non-contact elevator floor calling system based on Bluetooth, voice and face recognition is characterized in that the display module adopts an LED dot matrix screen or a high-definition LED or LCD screen.