https://mp.weixin.qq.com/s/zquwAfFLcuH-QPcB_c3Enw
By 超神经
场景描述：在全民抗击疫情时期，做好全面的防护是重中之重。电梯按键因为必须接触使用等原因，具有很高的潜在感染传播风险。为此，一家科技公司开发了「无接触式」方案，用语音控制来完成对电梯的呼叫和使用。
关键词：电梯按键 语音处理 无接触式A relatively closed space is a place where viruses can easily gather and spread. In daily life of residents, it is inevitable to enter and exit the elevator. Some physical contact in the elevator, such as pressing the floor button, also creates the risk of cross-infection.
In order to avoid contact with the elevator buttons, the people tried their best.
Disposal methods emerging among the people:
Paper, toothpicks, plastic wrap, post-it notes
Recently, Zhang Liubo, director of the Disinfection Center of the Environmental Institute of the China Centers for Disease Control and Prevention, in an interview with the media, pointed out in detail the real causes of such risks and listed specific protective measures.
He pointed out that the risk of elevator buttons and door handles is relatively high, because these places are exposed to high-frequency, the chance of contamination is very high, there is a relatively high probability of cross-infection, and it is necessary to strengthen the usual protection.
Subsequently, Zhang Liubo proposed three solutions. One is to increase the frequency of disinfection appropriately; the other is to separate them with facial tissues and disinfection paper towels; the third is to clean and disinfect them in time after touching them.
Zhang Liubo explained the risks of elevator buttons and
reminded everyone to take precautions
In addition to strengthening prevention, it will also be a feasible solution to use some of the current mainstream technologies to achieve "contactless" intelligent control and replace elevator buttons.
Among them, AI technology, especially voice control, is the first to stand out from the crowd.
AI realizes ``contactless'' elevator control
Recently, Spitz, a company focusing on solving intelligent voice interaction technology, quickly launched a "contactless" offline voice module that can control elevator use through user's voice commands.
An example analysis of voice control
In this method, AI technologies such as voice recognition, voice processing, and human-computer interaction are used to replace traditional buttons with voice calls to complete elevator rides without direct contact with the user to avoid cross-infection of the new coronavirus or other infectious diseases.
According to the report issued by Spitz, the smart elevator offline voice module can set different voice commands according to different application scenarios, and process them through the self-developed AI voice chip TH1520, and feed the information back to the elevator control panel To complete the voice call and use.
The realization of this technology benefited from their AI chip TH1520 released in early 2019. The chip is suitable for terminals such as smart homes, smart terminals, vehicles, mobile phones, and wearable devices. It can realize functions such as voice processing, voice recognition, and voice broadcast, and supports offline voice interaction.
There are many advantages, which can be connected to a variety of elevator equipment
Based on some technologies including the TH1520 chip, the offline module launched by Spitz this time has implemented functions such as voice call elevator and voice broadcast reminder in the test, and is compatible with a variety of mainstream elevator equipment.
According to the official introduction, the elevator offline voice module has the following five characteristics:
- Strong robust far-field recognition performance, 1-3 meters wake-up success rate>97%, speech recognition rate>95%;
- Support customized recognition of 100+ local instructions, and optimize specific algorithms for children, the elderly, and Mandarin with dialects;
- Built-in high naturalness TTS, multi-timbre selection, adjustable volume and speech rate; support personalized TTS deep customization;
- Completely offline speech recognition, no network required, zero response delay;
- Ultra-low power consumption, <100mW in standby, meeting the requirements of green energy and environmental protection.
Module function test video
In the results of the demonstration they released, you can see that the smart elevator offline voice module can clearly identify the user's control commands and make timely feedback and actions.
Moreover, the module has built-in high-performance voice algorithms, integrated linear dual microphones, compatible with mainstream ID and MD designs, and can quickly perform docking and joint debugging tests with major elevator manufacturers/solution providers.
Friendly link: Elevator manufacturers/solution providers, and those who need "contactless" human-computer interaction technology, can submit docking requirements through the following QR code. 
In addition to bringing high-efficiency preventive measures in extraordinary times, this method also has a strong humanistic care purpose: it can provide a more relaxed and convenient operation method for busy people such as children, the elderly, people with disabilities, or deliverymen.
There is more than one way of "contactless"
In fact, voice control will be an essential function in many future intelligent elevator designs.
Some time ago, KONE Elevator also launched its own smart elevator solution, mentioning the application of AI and other technologies in elevators to achieve intelligent control and interaction, one of which is voice activation control.
And KONE’s voice control module will be equipped with the mature Amazon Alexa, making it easier for users to use.
Kone DX-class elevator renderings
In their plan, the new Kone DX-class elevator will also have "virtual windows", music streaming, colorful light prompts and other content. As a whole, computer vision, multiple sensor analysis and data analysis technologies will be used to create more futuristic smart buildings.
These alluring ideas will all be the potential directions for the realization of the "contactless" solution.
For example, combining a camera and a variety of sensors, using image recognition and intelligent algorithms, or adding a control mode of gesture or posture analysis, can help the elevator enter the "touchless" operation mode more quickly for its safe operation. Provide more comprehensive technical support.
Use AI to help fight the epidemic
As the research continues, people's understanding of the new coronavirus is constantly refined and deepened, and the corresponding prevention and protection measures have also been updated and upgraded.
Among them, the help that AI technology can bring is also being explored and expanded by more technical people.
Using such technical solutions to make some efforts to prevent and prevent epidemics should be something that every technical person will feel gratified and work hard for.
—— End—— 
Scan the QR code and join the discussion group to
get more high-quality data sets to
understand the application of artificial intelligence.
Follow the top meeting &
reply to the paper "Reader" to learn more and
more exciting content (click on the picture to read)