186 results about "Phase time" patented technology

The invention relates to a crossing traffic signal control system which comprises a vehicle flow rate statistic analysis module, a traffic control preemption decision module and a crossing signal lamp module which are connected sequentially. The invention also relates to a crossing traffic signal control method utilizing the system. According to the control method, based on a clock phase, the traffic control preemption decision module controls the crossing signal lamp module, when phase execution is finished, if the traffic control preemption decision module determines that a phase green light time of a phase is longer than a preset phase time, the phase is executed first to realize preempt control based on the clock phase, then the clock phase is executed according to a preset sequence, thus a phase of a high vehicle flow rate is released preferentially, city traffic pressure is effectively alleviated, and a traffic pass efficiency of a city is raised. The system and the method in the invention have the advantages of a simple system structure, low cost of method realization, and a wide application range.

The invention discloses an intersection signal control method considering the priority of multiple buses. According to an intersection which the multiple buses probably pass by, a multi-objective planning model is established through the functional relationship between green time displayed at all phases, average delay of the buses, the phase time change amount and the lane saturability, and an exhaustion method is used for solving to obtain an optimal signal control scheme for the intersection in each period. According to the intersection signal control method, minimum average delay of the buses is considered, and meanwhile changes of original signals and influences on other lanes can be reduced; as a result, priority control over the buses and normal operation of the intersection are guaranteed, the bus travel time can be shortened for passengers, the attraction of a bus trip to citizens can be promoted, and urban traffic congestion can be relieved.

The invention proposes an incoherent frequency compensation and demodulation method and a demodulation device which have low power consumption, high performance and use the pseudo-randomness of the received signal phase and the PN code to realize the wireless digital communication data demodulation which has short distance, low power consumption and low packet loss rate through the carrier frequency error compensation and data recovery; the demodulation device is composed of a digital low-converter, a channel filter, a phase arithmetic unit, a phase differentiator, a frequency compensator and a PN code de-spreading correlator; the intermediate signal is converted into the plural baseband signals which are processed with channel outer band noise filtration so that the amplitude-time signal is converted into the phase-time signal; the phase differentiator is adopted to differentiate the phase-time signal; the frequency compensation circuit compensate the carrier frequency according to the phase difference signal and the phase average signal; the carrier frequency and the phase recovery circuit are avoided; the PN code correlator group processes the matching demodulation towards the semi-cosine shaping OQPSK and MSK signals of the DSSS directly to recover the baseband data; the incoherent frequency compensation and demodulation method and the demodulation device has the advantages of simple circuit, less quantity of hardware, easy low power consumption integration, good demodulation performance and being applicable to the wireless satellite navigation and the short-range wireless communication device with batteries as the power supply.

The invention belongs to the field of digit signal processing, and provides an improved frequency estimation method and device for all-phase time-shift phase difference, capable of improving precision and robustness and lowering signal-noise ratio threshold. The frequency estimation method includes the steps of inputting M=2N-1+L samples, namely x(-N+1-L) to x(N-1), obtaining a first path phase value phi, conducting all-phase FFT for x(-N+1-L) to x(N-1), directly taking the phase of index value K=K2 at peak spectrum as a second path phase value phi2, multiplying the difference of two paths of phase value (phi-phi2) with 1/delta omega L to obtain the initial frequency bias estimated value epsilon, conducting frequency drift compensation for the initial frequency bias estimated value epsilon to obtain the modified frequency bias estimated value ^ epsilon, and outputting the normalized frequency estimated value as described in the description. The method and apparatus are applicable to digital signal processing.

The embodiment of the invention provides a 24-hour electronic wireless system for indicating traffic information and a device thereof, which comprises a wireless launcher and a wireless receiver. The wireless launcher is arranged on a traffic light or a traffic guide board and used for directionally transmitting a first and a second digitally encoded wireless signals with varied spread velocities. The wireless receiver is arranged in a running vehicle and used for directionally receiving the first and the second wireless signals. The wireless receiver is also used for reading the contained digitally encoded information according to the received signals. Simultaneously, the wireless receiver calculates the distance between the vehicle and the traffic junction ahead and the relative velocity according to the phase time difference according to the received first and second wireless signals. The system of the invention is free of influence from weather condition and poor visibility. Therefore, the system is capable of providing 24-hour traffic information indication to the passing vehicles and controlling the running vehicles when necessary so as to prevent red light violation and dangerous driving. Simultaneously, the system can carry out relay transmission on the traffic information so that the succeeding vehicles can receive the relative information at the same time.

The invention discloses a public transport priority control method and device, and the method comprises the steps: obtaining a priority request of a bus; carrying out the green-light prolonging operation for a priority phase according to the green-light prolonging time of the priority phase, the rear offset time of a coordination phase and phase compression time of a compensation phase when the green-light prolonging time of the priority phase is greater than zero if the phase state of the priority phase is a green-light state; and carrying out the red-light early breaking operation for the priority phase according to the front offset time of the coordination phase when the red-light time of the priority phase is determined to meet an early breaking condition if the phase state of the priority phase is a red-light state. Because the front and rear offset time of the coordination phase is considered during the execution of the green-light prolonging operation or the red-light early breaking operation, the method can improve the public transport priority level on the basis that a green wave effect is not affected. Meanwhile, the method reduces the loss of non-priority phase time through the time compensation of the priority phase, and can effectively reduce the impact on the passing of social vehicles from the public transport priority control.

Pathological binaural phase time delay (PBTD) asynchrony is measured at a variety of frequencies and speech stimuli to develop a BPTD profile for a subject. A corrective device (600, 1000) is designed to apply clinical PBTD to compensate for the subject's pathological BPTD. An electronic device (500) is used to measure the subject's ability to comprehend words at a variety of relative time delays between ears to estimate the ideal overall relative time delay. The optimal relative phase shift at a variety of frequencies is also measured. An electronic device (600) may be used to correct the pathological BPTD by delaying sound in different frequency bands differently to the target ear, according to the BPTD profile, or a passive filtered earplug (1000) may be used to correct smaller amounts of BPTD.

A transmission system includes a first clutch, a second clutch, and a controller. The controller communicates with the first and second clutches and commands a gear shift. The controller calculates a torque phase time for the gear shift and determines a desired torque trajectory within said torque phase time. The controller determines on-coming torque values for the second clutch and off-going torque values for the first clutch to achieve the desired torque trajectory within the torque phase time. The controller calculates an on-coming clutch pressure based on the on-coming torque value, and an off-going clutch pressure based on the off-going torque value. The controller delays actuation of the first and second clutches to compensate for hydraulic delays.

A pavement signal lamp control method between adjacent intersections based on a particle swarm algorithm is disclosed. The control method comprises the following steps that 1) division is performed through referencing time periods of historical traffic data; the time periods divided according to traffic flow changes in the historical traffic data are collected, the time periods with the small flow changes are divided together, and a traffic flow peak period and a smooth period are distinguished; 2) a pavement signal lamp phase is set; 3) traffic data of a pavement and a motorway is collected in real time, and a signal phase state and phase time are calculated; 4) whether a current green light phase demanding degree of the pavement and the motorway satisfies a signal lamp phase conversion condition is determined; 5) when the current green light phase demanding degree satisfies the signal lamp phase conversion condition, the signal lamp changes the phase. The invention provides the pavement signal lamp control method between the adjacent intersections based on the particle swarm algorithm. By using the method, intersection vehicles and traffic efficiency of pedestrians are considered, reliability is high and the traffic efficiency is increased.

The invention provides a traffic intersection phase time control coordination method. The method includes the following steps that: when a vehicle drives to an information sending point of a certain lane, an OBU in the vehicle sends vehicle location information to an RSU, and the RSU receives the vehicle location information after t1; the RSU compares with the vehicle location information with a preset lane and performs judgment according to the received vehicle location information so as to confirm a lane where the vehicle is located, and extracts the phase information of the lane where the vehicle is located from a traffic signal controller; and the RSU pre-calculates t2 from a time point when the RSU sends a signal to a time point when the vehicle receives the signal, and calculates the phase information of the vehicle when the vehicle receives the signal according to the extracted phase information of the lane where the vehicle is located, and sends the phase information of the vehicle when the vehicle receives the signal to the vehicle. With the method of the invention adopted, the current phase information of signal lamps in a front intersection can be learned in advance, and the problem that the signal lamps are not easy to identify in environments where the signal lamps are blocked by heavy fog, rainstorms, vehicles and trees can be solved.

A method to improve traffic efficiency at intersections, which comprehensively considers the traffic of four common traffic elements in urban traffic, public vehicles, non-motorized vehicles, and pedestrians, and divides road sections into ordinary driving sections, internal diversion sections, and left-turning sections. There are four functional sections: the intersection section and the intersection diversion section. The intersection is divided into four parts: the intersection area of ​​left and right turning lanes at the corner, the intersection area of ​​central motor vehicle lanes, the non-motor vehicle passage area, and the pedestrian passage area. The traffic conflict at the intersection is decomposed into the central traffic conflict point of the intersection, the corner traffic conflict point, the internal conflict point of the road section, etc. Each serious conflict point is solved by two phases, and the phase time of different intersections overlaps as much as possible to realize the traffic flow in all directions as much as possible. Non-motor vehicles and pedestrians can pass at the same time without conflict, so as to achieve the purpose of improving traffic capacity, reducing waiting time and improving service quality.

The present invention provides a rural electronic commerce data authentication method, belonging to the technical field of data storage. The method comprises the steps of: the step S01, receiving andstoring a business request by a blockchain node; the step S02, performing safety verification of the business request; the step S03, when a preset condition is met, performing preprocessing of the business request stored in the blockchain node to obtain and store preprocessing blocks, wherein when there are a plurality of business requests, the preprocessing blocks comprise a main preprocessing block, a first branch preprocessing block and a second preprocessing block; and the step S04, extracting the preprocessing blocks to perform consensus verification, wherein the consensus verification comprises data global integration verification, data local integration verification and integrated verification, the business request comprises a business request queue, the first branch preprocessing block performs preprocessing of the business request of the first half part of the business request queue, and the second branch preprocessing block performs preprocessing of the second half part of the business request queue. The rural electronic commerce data authentication method shortens the consensus verification phase time consumption and improve the rural electronic commerce data authentication efficiency.

The invention discloses an internet-of-vehicles-based intersection signal light split regulation method. The method comprises the following steps: performing vehicle GPS (Global Positioning System) road correction and calculating a road average speed; establishing an average speed estimation model; establishing a single-intersection signal light six-phase control system model; solving duration of each phase by using a particle swarm algorithm; performing dynamic updating of each phase time of an intersection. Field experiment application proves that the internet-of-vehicles-based intersection signal light split regulation method has a good effect, can effectively improve the vehicle traffic efficiency of the intersection and is applicable to occasions such as intersection signal light split regulation.

This invention relates to one method by use of second remaining sequence for microphone setting, which adopts phase time lag to realize microphone direction optimization and applies remaining sequence into microphone array. Each microphone unit feeds back different phase time lags signals to get one secondary remaining sequence.

When a delay period (torque phase period) from a shift start point to a shift begin point of an automatic transmission becomes excessively long, an initial value of hydraulic pressure is forcibly learned such that the torque phase period remains at an appropriate level in accordance with a running state of a vehicle.

The invention relates to a homogeneous time resolved fluorescence immunoassay chelating agent and the preparation method thereof. The chelating agent is N, N, N', N'-((2, 6-di(3'-aminomethyl)-1-pyrazole)-4-(4-isothiocyanate(phenylacetylene)-pyridine))-tetraacetic acid. A luminous group is 2, 6-di(pyrazole) pyridine; the invention has high triplet-state energy level, the excitation wavelength after the combination with rare earth ions is 320nm, the emission wavelength is 520 to 620nm, the luminous service life is 2.99ms, the quantum yield is 0.58, the invention is in line with the requirements of homogeneous TRFIA to be combined with phenylacetylene at the pyridine 4-position, and the acetylene bond can block protein macromolecules from consuming luminous energy. The phenyl 4-linking isothiocyanate at the pyridine 4-position can be coupled with protein without injury, so as to be conductive to the high-efficient measurement of the luminescence of the chelating agent. The polyammonia polycarboxyl structure of 11 coordination site can exclude the quenching function of water molecules on rare earth luminescence and improve the solubility of the chelating agent in water and the dynamic stability of the chelating agent in the water r solution.

Disclosed is an accurate confirming method of the back wave time delay of an acoustic surface wave radio-frequency tag, the steps of the method comprise setting a parameter delta n, limiting the possible time delay of each reflected pulse under the standard temperature, only permitting the possible time delay to exist in a series of extremely small range of delay time decided by the delta n, auxiliary confirming the integer number of the carrier cycle in pulse time delay by measuring group time delay, enabling the uncertainty of the integer part of the back wave phase time delay to be limited in a certain range, and utilizing the incidence relation of a preset permission time delay range and a back wave phase in the range to confirm the integer part of the time delay in the certain range, thereby accurately obtaining the back wave time delay. When measuring the back wave time delay under an unknown temperature, the designed time delay under the standard temperature can be obtained after measuring a temperature time delay coefficient through the phase difference of 1-2 reflecting grating intervals of the known time delay under the standard temperature. Under the condition of meeting the reliability of the system, the method of the invention can be utilized to design the largest different code quantity on the acoustic surface wave radio-frequency tag of which the substrate length is limited.

The invention discloses an XLPE cable partial discharge positioning method and system based on a high frequency pulse current method. The method comprises the steps that a current pulse signal generated by the partial discharge of a three-phase cable is collected; according to the phase time domain graph of each phase of the cable, the characteristic parameters of a partial discharge signal are extracted to judge the source cable phase sequence of the current pulse signal; the distance between a test point and an internal discharge point is calculated according to the time difference between an oscillating decay wave and a reflection wave in the phase time domain graph of the partial discharge signal collected on the determined partial discharge cable phase sequence; the orientation of thetest position and a discharge point is determined; the distance between the test position and the discharge point is determined according to the magnitude of the discharge signal amplitude in the phase time domain graph collected at different positions of the determined partial discharge cable phase sequence; and by adjusting the orientation of tested points and the discharge point and continuously reducing the distance between tested points, the discharge position is determined within a preset accuracy range. Accurate cable partial discharge positioning is realized.