61results about How to "Implementation delay" patented technology

The invention discloses an intersection signal control method based on a dynamic steering proportion estimation, and aims at a four phase control intersection. The intersection signal control method based on the dynamic steering proportion estimation includes: establishing a state space model based on Kalman filtering; designing an improved sequence Kalman filtering algorithm to solve an intersection dynamic steering proportion; further establishing a multiple target signal control model which minimizes delay and queuing length and maximizes effective traffic capacity based on the above two steps so as to solve a timing parameter and an evaluation index for a intersection real-time signal. Case researches show that the intersection signal control method based on the dynamic steering proportion estimation has high efficiency and accuracy, and can achieve real-time signal control of the intersection. In allusion to the current situation that a study of combining the dynamic steering proportion estimation with signal control is basically in a blank state, the intersection signal control method based on the dynamic steering proportion estimation has the advantages of being dynamic and timely, high in efficiency, high in accuracy, optimal in multiple targets, used on line and the like.

The invention discloses a intelligent business hall face recognition method based on lightweight deep learning, which comprises the following steps of: data preprocessing: detecting a face region in an acquired image, and then inputting the region into a face recognition network; design of a face recognition model; model training: learning and distinguishing features of a human face, gradually adjusting weight parameters of a network through multiple iterations based on a human face training data set subjected to data preprocessing, and finally obtaining a human face recognition model with good performance; model testing. According to the invention, a traditional business hall business handling mode is solved; through a face recognition mode based on deep learning, potential business recommendation can be actively provided for a user by analyzing user consumption information, precise marketing of customers is realized, business handling guidance is intelligently provided for the customers, and the user experience and the working efficiency of business handling personnel are greatly improved; under the condition of ensuring the model recognition precision, the model scale is greatlyreduced, and the face recognition of the mobile terminal is realized.

The invention belongs to the technical field of computer vision, and provides a real-time distributed identity perception pedestrian attribute identification method in mobile edge cloud. According tothe invention, a system for analyzing pedestrian attributes bound with identities across cameras is provided for the first time, and a complete algorithm implementation and deployment scheme is provided. In addition, some local algorithms have improvements on the prior art. Firstly, an improved pedestrian attribute recognition and pedestrian re-recognition combined training method improves the recognition precision while reducing the redundant information of the neural network; and 2, a distributed pedestrian image library, wherein the process of feature distance calculation in pedestrian re-identification is accelerated by adopting parallel calculation. In addition, the module allocation algorithm based on the context multi-arm tiger machine has universality and can be used for deployingother models in a mobile edge network.

The invention discloses a transmission method and thin terminals for media data streams. The transmission method comprises the following steps: a media channel is built through a first thin terminal and a second thin terminal, wherein a first media module is preset in the first thin terminal, and a second media module is preset in the second thin terminal; the media data streams are transmitted through the media channel by the first media module preset in the first thin terminal and the second media module preset in the second thin terminal. The transmission method provided by the invention solves the technical problems of network delay and data distortion caused by the reason that in prior art, data interaction between the two thin terminals only can be realized by transmitting media data between a thin client and a virtual desktop through an RDP (Remote Desktop Protocol) and the like; therefore, the technical effects of improving data transmission velocity and data accuracy are realized.

The invention discloses a method and a system for eliminating direct current offset between electrodes based on a chopping technology. The method comprises the following steps: step S1, outputting an electroencephalogram signal after chopping modulation and a direct current offset signal between the electrodes; s2, outputting direct current offset current between the electrodes; s3, extracting an integral direct current offset signal; s5, the electroencephalogram signals enter a chip amplification module to be amplified and demodulated, the electroencephalogram signals are returned to an original electroencephalogram signal frequency band, and original electroencephalogram signals are obtained; s6, filtering the original electroencephalogram signals through a low-pass filter to obtain noise-filtered electroencephalogram signals; and S7, transmitting the noise-filtered electroencephalogram signal into a digital-to-analog converter, and converting the noise-filtered electroencephalogram signal into a digital signal. The direct-current servo circuit effectively suppresses direct-current offset between the electrodes, compared with a traditional direct-current servo circuit, the process delay is reduced, meanwhile, the capacitance value of the input capacitor in the circuit is the same as that of the feed-forward capacitor, an ABBA type layout arrangement mode can be adopted, and process errors in the chip manufacturing process are effectively avoided.

The invention relates to a solar energy and sewage source heat pump combined heating system. A solar water heating system and a sewage source are connected in series with the heated part of a heat pump unit through a low-temperature water tank; the heat pump unit is started at valley electrovalence at night, an evaporating end is heated from the low-temperature water tank, and heat is completely stored by the solar water heating system when working at daytime; when the sewage source heat pump unit works at the valley electrovalence, the sewage source heat pump unit obtains low-grade heat energy from the low-temperature water tank and then releases high-grade heat energy through the heating cycle of the unit; part of the high-grade heat energy is stored in a high-temperature water tank, and the other part of the high-grade heat energy is directly supplied to end equipment for heating. According to the solar energy and sewage source heat pump combined heating system, phase-change materials are added to the high-temperature water tank to enhance the heat storage capacity and heat lag capability of the high-temperature water tank; the end equipment is lower in air supply temperature by adopting a fan coil to enhance the heat supply EER (Energy Efficiency Ratio) of the heat pump unit, so that the initial investment and operating cost of the heat pump unit are reduced; and the heat of the fan coil working at daytime is from the phase-change materials inside the high-temperature water tank and the heat storage amount of water at night.

The invention discloses a photocarrier delay line. The photocarrier delay line comprises an excitation laser 1, a first lens 2, semi-conductor material 3, a detection laser 4, a second lens 5 and a photoelectric detector 6, wherein a radio frequency electric signal S (t) modulates the excitation laser 1; modulated exciting light is irradiated on the semi-conductor material 3 after the exciting light is focused through the first lens 2; a non-equilibrium carrier the concentration of which changes along with the modulated exciting light is generated in the semi-conductor material 3 and radiates in all directions, and changes of concentration of the carrier can cause changes of the refractive index of the material; after detecting light emitted by the detection laser 4 is focused through the second lens 5, the detecting light is irradiated at a certain position in a reflection range of the carrier in the semiconductor material 3 at an incidence angle beta, and emergent light of the detecting light through the semi-conductor material 3 carries delayed information of an exciting light signal; and the emergent light is converted into a radio frequency electric signal V(t) through the photoelectric detector 6, and the signal V(t) is the delayed radio frequency electric signal S(t).

The invention discloses a buffer type traction machine band-type braking device which comprises two band-type arms surrounding a traction machine spindle, and a brake connected with the both band-type arms. An electromagnetic ejecting rod, a brake spring set and a piston buffer are arranged at the end, connected with the brake, of each band-type arm. Each piston buffer comprises a piston rod sleeved with a piston cylinder and the piston cylinder. A plurality of through holes are formed in the side wall of each piston cylinder. The free end of each piston rod is connected with the corresponding band-type arm. The free end of each piston cylinder is connected with the brake through a ball. Since the first end of each band-type arm is provided with the piston buffer, the period from the time when the band-type arms start braking to the time when the braking force reaches a maximum value can be appropriately prolonged through the piston buffers, braking is effectively controlled while the braking effect is not affected, the comfort of a rider can be improved, and temporary impact of braking to equipment is reduced.