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1. 发明授权

US11641591B2 Optimization method for UAV-based wireless information and energy transmission 有权
公开(公告)号：US11641591B2
公开(公告)日：2023-05-02
申请号：US17259936
申请日：2018-10-16
申请人： SHENZHEN UNIVERSITY
发明人： Yueling Che , Yabin Lai , Sheng Luo , Jie Ouyang , Kaishun Wu
IPC分类号： H04W24/02 , H02J50/20 , H04B7/185 , B64C39/02 , H04W24/10 , B64U10/13 , B64U101/00
摘要： An optimization method for UAV-based wireless information and energy transmission includes following steps: S1: reporting, by a wireless device, an energy state of the wireless device to a UAV; S2: detecting, by the UAV, a channel state between the UAV and the wireless device; and S3: selecting, by the UAV, an optimal action based on estimated revenue maximization according to an electric quantity of the UAV, an electric quantity of the wireless device, and the channel state. The use of the wireless device can reduce wiring costs, beautify the space, and ensure a smaller size and a lower power. By applying the UAV to information and energy transmission for the wireless devices, the data transmission rate and the energy conversion efficiency of networks are improved.

2. 发明授权

US11270109B2 Interactive method and interactive system for smart watch 有权
公开(公告)号：US11270109B2
公开(公告)日：2022-03-08
申请号：US16731042
申请日：2019-12-31
申请人： SHENZHEN UNIVERSITY
发明人： Kaishun Wu
IPC分类号： G06K9/00 , G06K9/62
摘要： An interactive method of a smart watch includes the following steps: S1. acquiring a vibration signal of an accelerometer and a gyroscope of a smart watch based on a vibration signal transmitted by a human body; S2. identifying the vibration signal by using an anomaly detection algorithm; S3. pre-processing the vibration signal, and further classifying and identifying the vibration signal by using an improved algorithm of a k-nearest neighbor algorithm; S4. analyzing the user's feedback on the results and correcting them in time to maintain a stable identification accuracy. The present disclosure also discloses an interactive system, including a signal detection module, an identification and classification module, and a real-time feedback module. In the present disclosure, the human body part is regarded as a virtual screen based on the vibration signal transmitted by the human body.

3. 发明授权

US10261178B2 Wireless network based method for detecting presence of metal 有权
公开(公告)号：US10261178B2
公开(公告)日：2019-04-16
申请号：US14932867
申请日：2015-11-04
申请人： SHENZHEN UNIVERSITY
发明人： Kaishun Wu , Yuanchao An , Zhong Ming
IPC分类号： G01S7/41 , G01S13/88 , G01S13/00
摘要： A wireless network based method for detecting carrying of metal, comprising: installing a wireless signal transmitting device and a wireless signal receiving device indoors; continuously transmitting to the surrounding, by the wireless signal transmitting device, wireless electromagnetic wave signals; continuously receiving, by the wireless signal receiving device, the wireless electromagnetic wave signals; continuously performing, through a signal abnormity detection system, abnormity analysis to the received wireless electromagnetic wave signals, and if any abnormality is determined, performing further analysis in the next step S5 to wireless electromagnetic wave signals within an abnormal waveband; and S5: extracting, through a date feature analysis system, a feature value of the wireless electromagnetic wave signals within the abnormal waveband, comparing and matching the feature value with features stored in an abnormal feature library, and if the feature of the wireless electromagnetic wave signals matches the feature of metal successfully, triggering an alarm device.

4. 发明授权

US11763820B2 Monitoring method and system based on magnetic field of loudspeaker 有权
公开(公告)号：US11763820B2
公开(公告)日：2023-09-19
申请号：US17376188
申请日：2021-07-15
申请人： SHENZHEN UNIVERSITY
发明人： Kaishun Wu , Qianru Liao
IPC分类号： G10L15/26 , H04R29/00
CPC分类号： G10L15/26 , H04R29/001
摘要： A monitoring method and system based on a magnetic field of a loudspeaker are provided. This method includes: collecting a magnetic field signal near the loudspeaker, and converting the magnetic field signal into a magnetic field digital signal; converting the magnetic field digital signal into a speech signal and removing an interference from the speech signal to obtain a filtered speech signal; removing noise in the speech signal, and performing short-time inverse Fourier transform on a speech power spectrum to obtain a denoised speech signal; equalizing response of the denoised speech signal to each frequency to convert the speech signal into an intelligible speech audio signal; and recognizing the speech audio signal and converting the same into a text content.

5. 发明授权

US11544977B2 Vibration-based authentication method for access control system 有权
公开(公告)号：US11544977B2
公开(公告)日：2023-01-03
申请号：US17037754
申请日：2020-09-30
申请人： SHENZHEN UNIVERSITY
发明人： Kaishun Wu , Yandao Huang , Wenkai Yang , Lin Chen
IPC分类号： G07C9/00 , G06N20/00 , G06F3/01 , G06F17/14 , G06K9/62
摘要： A vibration-based authentication method for an access control system includes: collecting vibration signals generated by a built-in vibration motor in an authentication device; filtering, denoising, and performing endpoint segmentation on the collected vibration signals, and extracting vibration signals containing effective touch; performing an alignment on the segmented vibration signals; performing a fast Fourier transform on the aligned vibration signals to obtain frequency-domain data, extracting frequency-domain features obtained after alignment and features obtained before alignment to construct a training data set, and storing the training data set in a database of the authentication device; using a new unlock signal generated when a user touches the authentication device as test data, and processing the test data to obtain test data containing effective touch; and matching and classifying the test data containing effective touch with the training data set by using a machine learning classification model, to obtain an authentication result.

6. 发明授权

US11134893B2 Limb movement gesture judgment method and device 有权
公开(公告)号：US11134893B2
公开(公告)日：2021-10-05
申请号：US15757977
申请日：2017-05-16
申请人： SHENZHEN UNIVERSITY
发明人： Kaishun Wu , Yongpan Zou , Jinyong Wu , Dan Wang , Lu Wang
IPC分类号： A61B5/00 , A61B5/11
摘要： The invention relates to a limb movement gesture judgment method, which comprises the following steps: a plurality of sensors worn on a moving wrist output induction signals generated by the sensors, and a data packet is formed and sent; the overall state of the multiple induction signals in the received data packet is compared with pre-stored movement type templates, so that the movement type of the moving wrist is determined; standard parameters of the sensor data about the movement type are obtained and separately compared with the multiple received sensor data, whether the movement gesture of the moving limb is normal or not is judged according to the degree of deviation of one or more induction signals from the corresponding standard parameters, and a corresponding prompt message is provided; wherein, the induction signals include a direction acceleration signal, a direction angle acceleration induction signal, and a pressure induction signal. The limb movement gesture judgment method and device have the following beneficial effects of being free of time and place limitations and low in cost.

7. 发明授权

US10412701B2 Indoor positioning method and system based on wireless receiver and camera 有权
公开(公告)号：US10412701B2
公开(公告)日：2019-09-10
申请号：US15760230
申请日：2017-05-16
申请人： SHENZHEN UNIVERSITY
发明人： Kaishun Wu , Jun Xu , Lu Wang , Yongpan Zou
IPC分类号： H04W64/00 , G01S5/02 , H04W4/33 , H04N5/232 , H04B7/06 , H04W4/02 , G01S3/04 , G01S3/74 , G01S5/12 , H04W84/12
摘要： The invention provides an indoor positioning method and system based on a wireless receiver and a camera, belonging to the field of positioning technology. The method in the invention comprises the following steps: a wireless receiver detects a query WIFI signal transmitted by a target device and extracts a MAC address and CSI of the target device from a query WIFI signal; a server captures the MAC address and the CSI of the target device from the wireless receiver, calculates an incident angle of the target device and the wireless receiver and sends a photographing instruction to a camera which photographs an image and uploads the image to the server; the server obtains the distance between the wireless receiver and the target device through the image pixels, and calculates the position information of the target device according to the coordinates of the wireless receiver. The invention realizes the accurate positioning of the target device by using only a wireless receiver and a camera, so that the cost can be controlled and a real-time calculation can be ensured; the combination of the two beneficial effects can help achieve good positioning results.

8. 发明申请

US20190059070A1 INDOOR POSITIONING METHOD AND SYSTEM BASED ON WIRELESS RECEIVER AND CAMERA 审中-公开
公开(公告)号：US20190059070A1
公开(公告)日：2019-02-21
申请号：US15760230
申请日：2017-05-16
申请人： SHENZHEN UNIVERSITY
发明人： Kaishun Wu , Jun XU , Lu WANG , Yongpan ZOU
IPC分类号： H04W64/00 , H04W4/33 , H04N5/232 , G01S5/02
CPC分类号： H04W64/006 , G01S3/043 , G01S3/74 , G01S5/0257 , G01S5/12 , H04B7/0626 , H04N5/232 , H04N5/23206 , H04W4/023 , H04W4/33 , H04W84/12
摘要： The invention provides an indoor positioning method and system based on a wireless receiver and a camera, belonging to the field of positioning technology. The method in the invention comprises the following steps: a wireless receiver detects a query WIFI signal transmitted by a target device and extracts a MAC address and CSI of the target device from a query WIFI signal; a server captures the MAC address and the CSI of the target device from the wireless receiver, calculates an incident angle of the target device and the wireless receiver and sends a photographing instruction to a camera which photographs an image and uploads the image to the server; the server obtains the distance between the wireless receiver and the target device through the image pixels, and calculates the position information of the target device according to the coordinates of the wireless receiver. The invention realizes the accurate positioning of the target device by using only a wireless receiver and a camera, so that the cost can be controlled and a real-time calculation can be ensured; the combination of the two beneficial effects can help achieve good positioning results.

9. 发明授权

US11824604B2 Massive MIMO wireless energy transmission method based on dynamic frame transmission 有权
公开(公告)号：US11824604B2
公开(公告)日：2023-11-21
申请号：US17955325
申请日：2022-09-28
申请人： Shenzhen University
发明人： Yueling Che , Yishen Li , Liangzhu Li , Sheng Luo , Kaishun Wu
IPC分类号： H04B7/0456 , H04L27/26
CPC分类号： H04B7/0456 , H04L27/2602
摘要： The present application discloses a massive MIMO wireless energy transmission method based on dynamic frame transmission. The method comprises the following steps: controlling, by a base station, each antenna to transmit a pilot signal to a user end in a time-sharing mode by using set time-sharing pilot frames; acquiring, by the user end, downlink channel state information from the antennae of the base station to the user end and feeding the downlink channel state information back to the base station; and calculating, by the base station, a precoding matrix based on the downlink channel state information, mapping data from a user layer to an antenna port by using the newly calculated precoding matrix, and performing beam forming calculation with maximization of an energy signal of the user end as a goal.

10. 发明授权

US11790073B2 Vibration signal-based smartwatch authentication method 有权
公开(公告)号：US11790073B2
公开(公告)日：2023-10-17
申请号：US17035752
申请日：2020-09-29
申请人： SHENZHEN UNIVERSITY
发明人： Kaishun Wu , Yandao Huang , Lin Chen
IPC分类号： H04L29/06 , G06F21/35 , G01M7/02 , G06F1/16 , G06F9/30 , G06F21/31 , G06F18/214 , G06F18/2413
CPC分类号： G06F21/35 , G01M7/025 , G06F1/163 , G06F9/3001 , G06F18/214 , G06F18/24147 , G06F21/316
摘要： A vibration signal-based smartwatch authentication method includes generating incremental vibration signals using a vibration motor in a smartwatch; performing frequency band-based hierarchical endpoint segmentation to obtain vibration signals at a plurality of frequency bands; extracting frequency-domain features for the vibration signals at the plurality of frequency bands; training a dynamic time warping model by taking the vibration signals at the plurality of frequency bands as a training data set, training a nearest neighbor model by taking the extracted frequency-domain features as training data; collecting to-be-authenticated vibration signals which are processed to serve as test data signals; discriminating similarities between the test data signals and corresponding training data signals through the dynamic time warping model, giving a classification result through the nearest neighbor model, performing weighted calculation on a discrimination result of the dynamic time warping model and a discrimination result of the nearest neighbor model to obtain an authentication result.

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