61results about How to "Implementation delay" patented technology

The invention discloses a signal interference canceller and a signal interference cancelling method. The signal interference canceller converts an electric interference signal into an optical modulation signal and then transmits the signal to an optical delay line for changing the corresponding optical length passed by the optical signal, so as to realize the delaying of the optical signal and finally converts the optical signal to an electric signal, thereby realizing to transfer the phase of a RF electric signal by (2n+1)180 degrees; wherein, n is equal to 0, 1, 2, 3, and the like; finally the interference signal which affects useful signals is filtered by cancelling. The invention can effectively remove useless signals received by a receiving terminal during the process of multi-carrier transmission; moreover, the invention is characterized by high delaying precision and high electromagnetic interference resistance.

The invention provides a radar echo simulating method and a radar echo signal simulator. The method comprises the steps of receiving a radar emission signal through a controller; respectively performing first delay processing for each PRF in the radar emission signal through a first storing device, and generating and outputting an emission delay signal; respectively performing second delay processing for each modulation information data in modulation signal through a second storing device, and generating and outputting a modulation delay signal; enabling the pulse drop edge of each modulation information data in the modulation delay signal to be in front of the pulse raise edge of the PRF corresponding to each modulation information data, so as to ensure matching and aligning; performing convolution operation for the emission delay signal and the modulation delay information through the controller, and generating and outputting a radar echo simulating signal; delaying and modulating the radar emission signal. With the adoption of the method, the problem of simulating echo distortion can be avoided.

The invention relates to a low power-consumption time-delay controllable POR (power on reset) method and circuit. Impulse waveform signals are generated through changing the input control end Vc of a programmable oscillator, wherein the period of the impulse waveform signals is T1; a counter counts the impulse waveform signals, and when the count value of the counter reaches a set value m, the output of the counter is changed from a logic low level into a logic high level; and an output buffer circuit outputs the logic high level as a POR signal, namely the time delay (Tdelay) required for realizing POR is m*T1, and the programmable oscillator and the counter are shut by utilizing the logic high level output by the buffer circuit. By utilizing the low power-consumption time-delay controllable POR method and circuit, the technical problems that the existing POR circuit is difficult to reach the delay of millisecond magnitude and can not change the time delay interval under the condition of not adopting off-chip capacitance are solved; and the time delay value can be programmed and changed, the delay of millisecond magnitude can be realized, and the circuit only has tiny instant power consumption.

The invention relates to the technical field of solid state power amplifiers, and discloses an over excitation protection circuit of a solid state power amplifier. The over excitation protection circuit specifically comprises an automatic level control loop and a switch control loop. A threshold of the automatic level control loop is set to stabilize over excitation input power at a certain rated power level; and a time delay or a threshold of the switch control loop is set to turn on a radio frequency switch after the automatic level control loop starts to control, so as to prevent an over excitation signal prior to control from entering a radio frequency amplification link. By means of the cooperative use of the two circuits, when an over excitation signal is input, subsequent equipment is protected, and meanwhile, the amplitude of the input over excitation signal is controlled instead of simply preventing over excitation by the on-off of a time delay switch used in the prior art. A universal over excitation protection device limiter is not used in the over excitation protection circuit disclosed by the invention, thereby avoiding the deterioration of such indexes as transmission system harmonics, third-order cross modulation, noise coefficient and the like. The invention further discloses an implementation method of over excitation protection circuit of the solid state power amplifier.

The invention provides a fully-automatic bagging and sealing machine and belongs to the technical field of packaging machinery. Technical problems, such as environment pollution, labor waste, low efficiency and high cost, in the prior art are solved. The fully-automatic bagging and sealing machine comprises a bag conveying mechanism, a bag opening supporting mechanism, an object conveying mechanism and a bag sealing mechanism. Packaging bags are sucked and conveyed to a bag opening supporting structure part by the bag conveying mechanism for opening supporting treatment. Then, objects are bagged by an object conveying structure, and a sealing structure immediately carries out bag sealing treatment. Then, the objects packaged are automatically conveyed into a storing zone by being pushed by a cylinder, and streamline operation is finished. The fully-automatic bagging and sealing machine realizes object collecting, bagging and packaging series process, is efficient, saves labor and energy and protects environment.

The present invention discloses a communications method and equipment and relates to the field of wireless communications, which are used to solve a problem that data offloading communications cannot be initiated because data offloading information of a network transmission peer end in a process of data offloading cannot be acquired in the prior art. A first network element queries data offloading capability information of a second network element from a server, where the first network element has a capability of data offloading. The first network element receives a message that carries the data offloading capability information of the second network element and is sent by the server. The first network element offloadingly transmit data which is to be sent when the message indicates that the second network element has a capability of data offloading.

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 belongs to the technical field of a microwave antenna and discloses a broadband high isolation double circularly polarized antenna based on a single layer artificial surface Plasmon. Theantenna includes a radiator, two vertically placed differential feed baluns and a metal reflector, wherein the radiator is located above the floor, upper ends of the two baluns are connected with theradiator, lower ends of the baluns penetrate through the metal floor and are connected with a feeding coaxial line, the radiator consists of four dipoles, two pairs of feeders and four parasitic metal rings, and the two pairs of feeders include a pair of coplanar strip lines and a pair of odd-mode artificial surface plasmon transmission lines. Full-wave electromagnetic simulation and processing tests are performed for the designed antenna, and that the antenna is capable of achieving broadband high isolation double circularly polarized radiation in the designed frequency band is verified. Theantenna is advantaged in that properties of high isolation, wide axial ratio bandwidth, high aperture efficiency and easy processing are achieved, and the application prospect is wide.

The embodiment of the invention provides a playing control method and device, and a terminal. The method comprises the steps of obtaining a plurality of pieces of network delay of a plurality of playing devices; selecting transition devices and slave devices from the plurality of playing devices according to the plurality of pieces of network delays; and sending control commands to the transition devices, thereby enabling the transition devices to control the slave devices to carry out synchronous playing. According to the scheme, the playing devices are divided into the transition devices and the slave devices according to the network delay between the playing control device and the playing devices, so the leveled control over a playing system can be realized, and the network delay between the playing control device and the playing devices can be reduced. Compared with the prior art, the method, the device and the terminal have the advantage that the audio data playing synchronism among the plurality of playing devices can be improved.

The invention discloses a clock generating circuit and a design method thereof which comprises the following steps that an input module comprising a dispersion gate and an inverter is built, and a clock signal, which is received by the input module is transmitted into a buffer module and an output module according to an input signal; the buffer module comprising a plurality of inverters is built, and a buffer signal which is received by the buffer module, is generated according to the clock signal; the output module comprising a plurality of inverters is built, and clock signals, which are not mutually overlapped and are received by the output module, are buffered and output according to the clock signal and the buffer signal; a delay module comprising a transfer gate and a PMOS transistor is built, and a delay signal is generated by delaying the clock signal by the delay module, wherein, the output module, the buffer module and the delay module are connected in sequence, and the delay signal generated from the delay module is fed back to the input module as an input signal. Through adopting the clock generating circuit and the design method thereof, the performance of the clock generating circuit is improved and the chip space and the production cost of the chip are reduced.

The invention discloses a method and system for realizing remote diagnosis and controlling a vehicle. The method comprises the steps that S1, a vehicle-mounted terminal obtains real-time data on the vehicle through a vehicle body CAN bus; S2, the vehicle-mounted terminal sends the data to roadside communication equipment in a wireless transmission mode; S3, the roadside communication equipment uploads the data to a server; S4, the server performs operation on the data and judges whether the data is abnormal or not, if yes, the step S5 is executed, and if not, the step S6 is executed; S5, the server issues a command to the roadside communication equipment, the roadside communication equipment sends the received command to the vehicle-mounted terminal, and the vehicle-mounted terminal sendsa control command through the vehicle body CAN bus; and S6, the server feeds back abnormal-free data to the roadside communication equipment and then turns to the vehicle-mounted terminal. According to the invention, data interaction between the roadside communication equipment and the vehicle-mounted terminal is carried out by using wireless transmission modes such as LTE-V2X and the like, diagnosis and real-time control of a remote vehicle are realized, and the communication stability is improved.

The invention provides a video face check method, which comprises the following steps that: when receiving a video face check request, a client sends a video face check instruction to a server, so that the server distributes a check end; When the agent token returned by the server is received, establishing a network connection with a corresponding audit end, and obtaining network state informationbetween the agent token and the audit end; obtaining original video data, and preprocessing the original video data based on the network state information to obtain client video data; and sending theclient video data to the auditing terminal, and displaying a corresponding auditing image when receiving the auditing terminal video data. The invention also provides a client, a server and a computer readable storage medium. According to the method, when the video face check is carried out, image jamming caused by a network problem in the video face check process can be reduced, the fluency andthe stability of the real-time video in the video face check process are improved, and the video face check process is guaranteed to be carried out smoothly.

The invention discloses a delayed uncovering structure of a stirrer. The delayed uncovering structure comprises a stirring cup and a cup lid covering the stirring cup, a handle is arranged on the stirring cup, the cup lid is provided with a covering portion corresponding to the handle, the covering portion is positioned above the handle after the cup lid is mounted, a delayed button is arranged atthe upper end of the handle and provided with a pin, the covering portion is provided with a positioning groove matched with the pin, the delayed button is connected with an elastic part to keep thepin clamped into the positioning groove and limit rotation of the cup lid, and the delayed button can be pressed down, so that the pin is separated from the positioning groove. In downtime, as the pinis clamped into the positioning groove to limit rotation of the cup lid, the cup lid needs to firstly rotate by a moving angle, the delayed button is pressed down, the pin is separated from the positioning groove, and then the cup lid rotates and is opened. Two-step operation is needed to open the cup lid, delay is realized, time is reserved for step-by-step stop of a high-speed rotating motor and a stirring knife, and safety is improved.

The present invention relates to a multi-mode POR circuit for an FPGA, comprising: a first delay module (101), a second delay module (102), a gating control module (103), and an output module (104), wherein a first output end of the first delay module (101) is electrically connected to the second delay module (102) and the gating control module (103) respectively, and a second output end of the first delay module (101) is electrically connected to the output module (104) is connected; the second delay module (102) is electrically connected to the gating control module (103); and the gating control module (103) is electrically connected to the output module (104). The multi-mode POR circuit provided by the invention can flexibly control the delay of a POR circuit from a subtle level to a few hundred milliseconds level; and meanwhile, the clock and reset of a D trigger are controlled by the output of a selector, the clk signal can be shielded according to needs in variosu modes, and theD trigger no longer acts, thereby reducing the dynamic power consumption of the circuit.

The invention provides a power-on and power-off remote control system and method for a power supply, and the system comprises a communication board card; the communication board card at least comprises a CPU module and a power supply module; the CPU module at least comprises a communication interface, and the communication interface realizes the communication with an external network; the power supply module comprises a primary power supply and an internal main power supply connected with the primary power supply, and the primary power supply is externally connected with an external power supply module; a control circuit is arranged between the primary power supply and the CPU module; the CPU module receives a power-off instruction through the communication interface, and achieves the switching control of the primary power supply through the control circuit. According to the invention, a complex chip does not need to be used as an independent module, a special power supply circuit is not needed, and only the control circuit with extremely low cost is needed, so the design is simplified, the cost is saved, and the tense PCB space is saved.

The invention discloses a high-reliability power supply circuit suitable for the embedded field. The high-reliability power supply circuit applicable to the embedded field comprises a transformer T, a bridge rectifier diode D, a relay J, a diode D1 and a single-pole double-throw switch S, wherein one side of the transformer T is connected with an alternating-current power supply Ui, and the other side of the transformer T is connected between a port a1 and a port a3 of the bridge rectifier diode D; the port a1 of the bridge rectifier diode D is also connected with an anode of the diode D1, a cathode of the diode D1 is also connected with one end of the relay J, the other end of the relay J is grounded, a port a4 of the bridge rectifier diode D is grounded, and a plurality of diodes are sequentially and serially connected between a port a2 and a grounding end of the bridge rectifier diode D. Through the principle, power can be supplied to electric equipment through various methods, the situation of power outage is avoided, the time delay of a power supply is realized, the power supply circuit is very suitable for use in the embedded field and the power supply reliability is improved.

The invention discloses a design method of a heterogeneous thin film structure delay line type surface acoustic wave device. The method comprises the following steps of 1, selecting a stacking mode ofa thin film material and a surface acoustic wave device model; 2, establishing surface acoustic wave device models with different thicknesses and acquiring dispersion characteristics of the surface acoustic wave device models; 3, according to the dispersion characteristic of the surface acoustic wave device model, selecting the film thickness which most meets the design requirement; 4, presettinga performance index of the surface acoustic wave device under the condition that the thickness of each film of the surface acoustic wave device model is determined; 5, designing a transducer structure according to the design indexes of the surface acoustic wave device, and calculating parameter values of the device; and 6, performing parameter judgment and feedback adjustment on the surface acoustic wave device. The method is simple in step, sapphire is selected as a substrate layer, an aluminum nitride and gallium nitride double-layer piezoelectric film is selected, and design of the delay line type surface acoustic wave device of the heterogeneous film structure is achieved.

The invention discloses a broadband time-resolved fluorescence immunoassay device and a broadband time-resolved fluorescence immunoassay method. The device comprises a light source for emitting exciting light; the device further comprises a light path module, a sample loading module, a spectrum detector and a pulse generator, the light path module comprises a light filtering assembly which is used for transmitting exciting light emitted by the light source to a marker and transmitting a fluorescence signal emitted after the marker is excited to the spectrum detector; the sample loading module comprises a driving motor and a POCT detection card; the POCT detection card is used for bearing one or more samples to be detected; the driving motor is used for driving the POCT detection card to move, so that the samples to be detected are positioned on a light path of the exciting light; the spectrum detector is used for receiving fluorescence signals; the pulse generator is connected with the driving motor, the light source and the spectrum detector and used for controlling the working time sequence of the driving motor, the light source and the spectrum detector. According to the invention, broadband luminescence spectrum measurement can be carried out on various markers at the same time, the test process is simplified, and the test time is shortened.