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Tmall Genie and Bosch Jointly Launched the First Smart Speaker Qina for the High-end Market

On January 8 local time in the United States, tmall Genie released IOT connect kit, a new generation of smart home connection scheme supporting "voice networking", at CES International Consumer Electronics Exhibition (hereinafter referred to as CES), and cooperated with Bosch to jointly launch the first smart speaker Qina for the high-end market. This is also the first smart speaker product launched by Bosch brand in China.

Gina is positioned in the voice central control of smart home. At present, Qina has realized voice control of 18 products in 5 categories of Bosch household appliances. It is reported that tmall Genie provides Qina with voice interaction capabilities and some online resources. As an intelligent product for both sides to explore the medium and high-end market, Qina has also made more differences in product design. Thanks to the 90 years' accumulation of Bosch's professional audio brand EV & dynacord, Qina has a 360 degree sound field design, showing outstanding professional sound quality. The built-in lithium battery can provide 7-hour battery life, and the offline wake-up word also makes users more convenient and smooth in interaction.

It is noteworthy that on this CES, Alibaba artificial intelligence laboratory also released a new generation of intelligent connection service IOT connect kit. Last year, Alibaba released IOT connect, an open communication protocol for smart networking, on CES, taking the lead in adopting Bluetooth mesh technology in the world.

A year later, IOT connect "evolved" again. In addition to the ability to open communication protocols, it also mastered the service ability of the "full stack" smart home connection platform, including connection standards, SDKs, modules, development boards and chip libraries, product libraries, scheme libraries, product specifications, authentication specifications, security specifications, etc.

Compared with last year, IOT connect kit can provide manufacturers with more diversified choices, more convenient, efficient and advanced smart home access services.

Ru Yi, general manager of Ali AI labs hardware terminal, introduced that in August last year, IOT connect kit had been piloted and opened to some industries. In just over four months, more than 4.5 million new devices were connected to tmall elf through this protocol. "At present, the number of devices connected to our platform has maintained a year-on-year growth rate of more than 50% every month. Due to the huge advantages in technical solutions, IOT connect kit has become the first choice for partners."

"Bosch's five major categories of household appliances have achieved voice control of Qina speakers. We look forward to working with tmall genie to connect more household devices of different brands through IOT connect kit to create a more convenient and better intelligent life for Chinese families." said Liu Min, vice president of strategy and business development of Bosch China group.

Tmall Genie and Bosch Jointly Launched the First Smart Speaker Qina for the High-end Market 1

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Problems of Phased Array Ground Penetrating Radar Detection System
Although GPR has been widely used in hydrology, engineering, environment and other fields, many basic theoretical and technical problems have not been fundamentally solved, so the real advantages of GPR have not been brought into full play.The main problems existing in GPR technology include:1) The detection depth is shallow, and the contradiction between detection depth and resolution cannot be overcome. Increasing detection depth means sacrificing detection resolution;2) Multiple spread and other clutter jamming are serious, and there has been no good elimination method, which exists in radars at home and abroad;3) The influence of medium unevenness is great and can not be eliminated, resulting in difficulty in obtaining necessary velocity data;4) The data collection method of single sending and single receiving can provide limited information for post-processing and interpretation.The above problems are fatal defects for GPR. Although many geophysicists, electromagnetic experts and geophysical workers have done a lot of research and improvement on radar antenna design, signal processing and underground target imaging, these works are only partial modifications to the existing GPR system. In order to develop GPR technology, we must update our ideas and solve the problems from the fundamental principle.In view of this situation, experts proposed to develop a new GPR system - phased array GPR detection system in 1999.The basic research idea is to replace the current monopole radar antenna with the phased array radar antenna by using the relatively mature military phased array radar technology. Its purpose is to gather the electromagnetic wave into a narrow beam to transmit underground (or detection object) through the phased array technology, and receive the radar echo signal reflected by the target by using the multi-channel acquisition technology, The advanced data processing is carried out, and finally the three-dimensional image of the internal structure of the detection object is given.Development prospect of ground penetrating radar technologyIt is worth noting that at present, similar products have appeared in the market, such as RIS antenna array series of a company, but these products simply combine multiple monopole antennas into array antennas, which is essentially different from the idea of phased array ground penetrating radar.Because the phased array radar converges the electromagnetic wave into a narrow beam by controlling the phase delay of each channel, the energy is concentrated and the wave front diffusion is small. Therefore, the detection depth of the phased array radar is much larger under the condition of the same frequency and transmission power; On the contrary, under the same detection depth, phased array radar can improve the transmission power, so its resolution is much higher than the existing radar. In addition, since the spherical wave transmission is changed to beam transmission, the influence of medium heterogeneity is much smaller.Secondly, the phased array radar works in a continuous scanning mode and can scan in multiple directions. Therefore, the amount of information is much larger than that of the existing ground penetrating radar. For some special detection work, such as the quality detection of embankment cut-off wall, its role is unmatched by the existing ground penetrating radar (monopole antenna radar can not detect the joints, forks and other defects of embankment cut-off wall at all).Because phased array radar is a multi-channel received signal, multi-channel superposition can be carried out, just like the multiple coverage technology of reflection seismic exploration. Therefore, multiple interference can be greatly eliminated, which is difficult for existing radars. The antenna of high frequency (600mhz-1ghz) phased array ground penetrating radar can be made smaller, and its advantages are unmatched by the existing ground penetrating radar in shallow detection.At present, the system prototype has been completed. The carrier free pulse working system with center frequency of 900MHz is adopted, and the transmitting and receiving antennas are separated. 16 (4 × 4) Transmit channel forming, beam aggregation and scanning 16 (4) × 4) The channel receives the echo, and the optional scanning angles are - 36 °, - 24 °, - 12 °, 0 °, 12 °, 24 ° and 36 °.The software part of the system has rich data processing functions. The main conventional processing includes filtering, gain adjustment, static and dynamic correction, deconvolution, complex signal analysis, time-frequency analysis, etc., and multi-channel data processing, such as velocity analysis, superposition technology, coherence analysis technology, array signal processing, etc. And weak signal extraction, target automatic recognition and inversion interpretation under various clutter interference. A large number of field experiments on concrete detection in Yichang Three Gorges dam are carried out. The experimental results show that the spotlight scanning function of phased array radar has been realized, the penetration depth is greater than 1.5m and the resolution is higher than that of ordinary radar.Editing: hfy
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عمليات البحث ذات الصلة
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