223 results about "Signal cell" patented technology

The invention provides a corrosion-resistant composite cable and a preparation method thereof, the corrosion-resistant composite cable comprises a signal unit, an optical cable unit and a protection unit, the signal unit and the optical cable unit are coated with the protection unit, the signal unit comprises a silver-plated copper conductor, an insulating layer, a shielding layer and a sheath layer, and the silver-plated copper conductor is coated with the insulating layer. The optical cable unit comprises an optical fiber, a buffer tube and a filler; the protection unit comprises an inner sheath, a tensile layer, an anti-corrosion layer and an outer sheath. The corrosion-resistant composite cable has good corrosion resistance, can effectively resist corrosion of various chemical substances, prolongs the service life of the cable, reduces the fault risk caused by corrosion, and improves the stability and reliability of power transmission or signal transmission; under severe environment conditions, such as high humidity, high salinity and high alkalinity, a normal working state can still be kept, continuous and stable support is provided for related equipment or systems, and normal operation of the equipment or systems is guaranteed.

The invention provides a personnel detection method and system applied to a fire scene, and the method comprises the steps: firstly obtaining a multi-source signal data set of the fire scene, enabling the multi-source signal data set to comprise communication signal units which are collected at different positions and are provided with time stamps, carrying out the signal feature extraction processing of the multi-source signal data set, and carrying out the detection of the multi-source signal data set; the method comprises the following steps: obtaining spatial distribution characteristics and time sequence change characteristics of a communication signal unit, then calling a pre-trained personnel positioning model to carry out joint positioning analysis on the spatial distribution characteristics and the time sequence change characteristics, and generating a potential personnel position candidate set corresponding to the communication signal unit; target position information of to-be-rescued personnel in the fire scene is determined according to the potential personnel position candidate set, finally, a rescue guide instruction containing position coordinates is generated based on the target position information, the rescue guide instruction is sent to a rescue terminal to trigger personnel search and rescue operation, and therefore indirect positioning is achieved through communication signals, and rescue efficiency is improved. Limitations of a traditional method are overcome, and rescue efficiency is improved.

The invention provides a multi-algorithm cooperative positioning method for a Beidou single-mode terminal of a railway locomotive, which belongs to the technical field of railway communication and positioning, and comprises the following steps: firstly, receiving a positioning signal flow which is sent by a Beidou satellite and contains a propagation path identifier, and carrying out shunt processing on a satellite signal unit; a direct signal is imported into a basic positioning algorithm module, a reflected signal is imported into an auxiliary positioning algorithm module, an initial positioning result and path correction information are obtained, then the initial positioning result and the path correction information are subjected to correlation verification, intermediate positioning data are generated, the intermediate positioning data are subjected to constraint adaptation based on railway line track feature information, and a constraint positioning result is obtained. Finally, the signal processing priority of the algorithm module is dynamically adjusted according to the constraint positioning result, final positioning information is generated and sent to a locomotive monitoring terminal, and therefore the accuracy and reliability of railway locomotive positioning can be effectively improved.

The invention discloses a thin film thickness measurement system, method and device and a computer readable storage medium, and relates to the technical field of thin film thickness measurement, and the system comprises a light source unit which is used for transmitting an initial light source signal; the light splitting unit is arranged on a transmitting path of the initial light source signal and is used for splitting the initial light source signal into a first light source signal and a second light source signal; the imaging objective lens is arranged on an emission path of the first light source signal, a to-be-measured film is placed at a measurement position, and the imaging objective lens is used for irradiating the first light source signal onto the to-be-measured film, forming a measurement signal and returning the measurement signal; the reference signal unit is arranged on a transmitting path of the second light source signal and is used for returning a reference signal under the action of the second light source signal; and the imaging spectrometer is arranged on the reflection path of the light splitting unit and is used for determining the thickness of the to-be-measured film based on the reference signal and the measurement signal returned by the light splitting unit, so that the measurement accuracy of the film thickness is improved.

A vehicle control system for operating a driving function for the automated longitudinal and / or lateral control of a motor vehicle at a traffic node. The system includes sensors that provide situational data, and a control unit. The control unit identifies a lane in which the vehicle is located, in an approach road to the node, based on the situational data. The control unit determines whether at least one signal generator of a signaling unit of the node is relevant to a driving maneuver of the vehicle at the node, based on the identified lane. The control unit operates the driving function at the node based on whether at least one signal generator is relevant to the driving maneuver of the vehicle at the node.

An in-memory computation device includes a word line activation circuit that receives an input signal indicative of input values and provides activation signals each as a function of the input value. The in-memory computation device further includes a memory array, a biasing circuit generating a bias voltage and a digital detector. The memory array has memory cells coupled to a bit line and each to a word line. Each memory cell stores a computational weight. In response to an activation signal, a cell current flows through each memory cell as a function of the bias voltage, the activation signal and the computational weight. A bit line current flows through the bit line as a function of a summation of the cell currents. The digital detector is coupled to the bit line, samples the bit line current and, in response, provides an output signal.

The embodiment of the invention provides a signal transmission method and related equipment, which can ensure that the optical powers of two paths of local oscillation light for performing coherent demodulation on signal light are in an equal or approximately equal state, and effectively reduce the complexity and time delay of an adjustment process. The method comprises the following steps: a signal unit receives signal light through a signal optical fiber; the polarization beam splitting rotator divides the local oscillation light into first local oscillation light and second local oscillation light; the first optical splitter splits the first local oscillation light to obtain third local oscillation light and first detection light, and the second optical splitter splits the second local oscillation light to obtain fourth local oscillation light and second detection light; the comparator indicates the first power adjusting unit to output fifth local oscillation light according to the third local oscillation light and also indicates the second power adjusting unit to output sixth local oscillation light according to the fourth local oscillation light according to the magnitude relationship between the optical power of the first detection light and the optical power of the second detection light; and the fifth local oscillator light and the sixth local oscillator light are used for performing coherent demodulation on the signal light.

The application discloses a self-interference cancellation device in a full duplex system, which is an independently deployable hardware module connected between a radio frequency transceiver and an antenna, and comprises a switch matrix and a phase shift network unit, a control signal unit, an interface unit and a power supply unit. The switch matrix and the phase shift network unit comprise a radio frequency switch matrix and an inverter composed of a balun transformer; the control signal unit comprises a microcontroller. The microcontroller is configured to output a periodic control signal to synchronously control the radio frequency switch matrix to alternately switch the connection between the two antennas and the transmitting and receiving ports in the first half cycle and the second half cycle in a control period, and synchronously control the phase shift network to introduce a 180-degree fixed phase shift in the second half cycle. Through the above operation, the self-interference signal spectrum is moved away from the baseband, and then low-pass filtering is performed on the latter stage to realize endogenous elimination. The application does not need channel estimation, has simple hardware architecture, low cost and good compatibility, and is convenient for full duplex upgrading of existing equipment.

The invention relates to a feedback system (10) for an electric vehicle (12), comprising an electric motor (18) and a service brake (22). The electric motor has a brake unit (20). A control unit (24) is provided. The control unit (24) is connected to the electric motor (18) and the service brake (22) via a signal connection. The brake unit (20) brakes the electric vehicle (12) up to a first point in time. The service brake (22) brakes the electric vehicle (12) after the first point in time. A second point in time is present. The second point in time occurs at or after the first point in time. A third point in time occurs at or after the second point in time. At the third point in time, the electric vehicle (12) comes to a standstill. The invention is characterized in that a signal unit (26) is provided. The signal unit (26) is connected to the control unit (24) via a signal connection.The signaling unit (26) generates and displays a signal for the driver at the second time point.

The invention discloses a low-orbit large spacecraft aluminum alloy framework autonomous disintegration system and a control method. The low-orbit large spacecraft aluminum alloy framework autonomous disintegration system comprises an aluminum alloy framework, an activation signal unit and a liquid metal triggering unit. The activation signal unit is used for receiving an external signal and sending an activation signal to the liquid metal triggering unit; the liquid metal triggering unit comprises liquid metal, a storage bin for sealing the liquid metal and a protective gate; the protective gate is arranged between the liquid metal and the aluminum alloy framework so as to isolate the liquid metal from the aluminum alloy framework; the protection gate receives the activation signal and releases the liquid metal, so that the liquid metal makes contact with the aluminum alloy framework and diffuses and permeates into the aluminum alloy framework along the grain boundary of the aluminum alloy, the structural integrity is destroyed, the spacecraft is decomposed, the orbit is lowered under the influence of residual atmosphere and the like, and finally the spacecraft enters the atmosphere to be completely burnt out. Compared with the prior art, the device can be controllably disassembled, and space junk is avoided.

According to the automatic opening, closing and stopping system for the roller shutter door, a complete and clear control link is established among a roller shutter door motor, a roller shutter door controller, a PLC, a relay assembly, a limiting detection unit and a trigger signal unit, so that the opening, closing and stopping actions of the roller shutter door can be controlled to be executed under the condition of multi-signal input. Therefore, the limitation that a traditional roller shutter door only depends on a single button or is operated in a manual mode is overcome. The PLC collects instructions from the trigger signal unit through the input module and can establish logical judgment relations between different action instructions and door body states in combination with position signals obtained by the limiting detection unit, it is ensured that the roller shutter door only executes corresponding actions under the safe and allowable conditions, and the safety of the roller shutter door is guaranteed. And potential safety hazards such as top rushing, overwinding or reverse action caused by inaccurate position judgment in a traditional system are effectively avoided.

The present invention discloses a method and device for demodulating and analyzing large Doppler frequency shift (OTFS) satellite communications, belonging to the field of satellite communications. The device includes a data acquisition unit, an IQ imbalance calculation unit, an amplitude error calculation unit, a continuous phase signal generation unit, a convolution detection frame header determination unit, two guard slot removal units, two receive reference signal acquisition units, a sampling phase error acquisition unit, two theoretical demodulation reference signal generation units, a channel model extraction unit, a Doppler frequency error calculation unit, a Doppler frequency error elimination unit, a phase error calculation unit, a Doppler phase error elimination unit, a channel estimation unit, an interpolation and smoothing unit, a channel error elimination unit, a Wigner transform unit, a symplectic finite Fourier transform unit, a digital modulation and demodulation unit, and an error vector magnitude (EVM) calculation unit. The present invention can achieve high-precision demodulation and analysis of large Doppler frequency shift (OTFS) orthogonal time-frequency-space modulation (6G) satellite communication signals.

The application discloses a thyristor trigger signal and driving circuit for non-controlled rectification of a direct-current bus voltage, comprising a voltage comparison unit, a pulse wave generation unit, a trigger signal unit and a driving unit; the voltage comparison unit is used for judging a thyristor opening time and sending an output effective level signal to the trigger signal unit; the pulse wave generation unit is used for generating a frequency-adjustable pulse wave and sending the pulse wave to the trigger signal unit; the trigger signal unit is used for synthesizing a trigger signal based on the effective level signal and the trigger signal and sending the trigger signal to the driving unit; and the driving unit is used for controlling conduction of the thyristor based on the trigger signal. The application greatly improves reliability of the thyristor driving, avoids problems of power waste and large loss of a driving power supply, and can be applied to high-power frequency converter products in batches.

The invention discloses a signal transmission method and device, communication equipment and a readable storage medium, and belongs to the technical field of communication, and the signal transmission method comprises the steps that first equipment carries out backscattering modulation according to a to-be-transmitted information bit and a second signal to obtain a first signal; wherein the second signal is a carrier signal of the first signal; the first signal comprises at least one first signal unit, each first signal unit comprises two chirp spread spectrum CSS symbols, the average powers or reflection coefficients of the two CSS symbols are different, and other parameters, except the average powers and the reflection coefficients, of the two CSS symbols are the same; the information bits to be transmitted are modulated through the frequency of each CSS symbol in each first signal unit; and sending the first signal.

The utility model belongs to the technical field of cesium optical pump magnetometers, and particularly relates to a split type cesium optical pump magnetometer, which comprises a data acquisition and processing module, and is characterized in that a connecting line I is mounted on the surface of one side of the data acquisition and processing module, and an electronic component module is mounted at one end, far away from the data acquisition and processing module, of the connecting line I; a second connecting line is installed on the surface of the side, away from the first connecting line, of the electronic assembly module. The components of the device adopt a split design, are connected through a connecting line, are convenient to install on an unmanned aerial vehicle, can simultaneously collect by a plurality of cesium optical pump probes, have the characteristics of high sensitivity, good stability, high precision and the like, can separate cesium optical pump signal generation from signal conversion, and can connect a plurality of cesium optical pump signal units by using one signal conversion unit. The method achieves the centralized transmission and control of cesium optical pump data, and plays an important role in the fields of military affairs, geophysical exploration and the like.

Aerodrome signalling system (100), comprising a plurality of signalling units (2), each comprising at least one aerodrome signalling device (9, 10), and a central communication unit (4) configured for data communication with the plurality of signalling units. The plurality of signalling units (2) each comprise a wireless data communication device (18) configured for cellular data communication and at least one sensor device (15) configured to capture measurement data in relation to one or more of: an environmental condition, a meteorological condition, a presence of an object, a movement of an object and a status condition relating to the respective signalling unit other than a status condition of the respective at least one signalling device. The at least one sensor device (15) is configured to communicate the measurement data to the wireless data communication device for transmission via a cellular network.

The present invention provides a technology that enables the simple control of actions of an external device, for example, a robot, via a signal from a numerical control device. A numerical control device is provided, which is connected to an external device via a control unit and which uses a numerical control program to control the external device. The numerical control device comprises: a signaling unit that controls actions of the numerical control device in response to a signal from a machine tool controlled by the numerical control device; and a plurality of control systems, comprising a control system for the external device and a control system for the machine tool.A signal selection unit that selects from the multitude of control systems other than the control system of the external device a control system with which the control system of the external device refers to a specific signal; a signal determination unit that determines whether or not notification of the specific signal has been received from the one control system selected by the signal selection unit; and a signal transmission unit that, if notification of the specific signal has been received, notifies the control device of the specific signal, the control device controlling the control system of the external device according to the notified specific signal.

The invention provides a multi-input pulse shaping circuit based on current addition and electronic equipment, and relates to the field of integrated circuits. The input end of each path of detection unit in the multiple paths of detection units is connected with one pixel, and the output end of each path of detection unit is connected with the input end of one path of trigger signal unit. According to the comparator circuit, the amplitude of the signal transmitted to the input end of the comparator through the summing circuit is far higher than that of the signal transmitted to the input end of the comparator through a traditional circuit structure, the threshold voltage range can be set to be high, and the comparator circuit meeting the requirement can be designed with a small area. A good measurement dynamic range can be achieved under the condition that the area of a chip is saved, and meanwhile the risk of false triggering is avoided. And tiny disturbance generated by a single pixel under the condition of no input signal cannot be detected, so that the working reliability of a chip is improved. The multi-input pulse shaping circuit structure based on current addition can enable a front-end circuit to reach an excellent dynamic range under the condition of saving the area of a comparator.

This invention relates to a power tool and a motor control method for the power tool. When the handle is in the working position area and locked relative to the main unit, a signal unit feeds back a first state signal; when the handle is in the non-working position area, the signal unit feeds back a second state signal. Upon receiving the first state signal, the control unit controls the motor to start according to a first control logic; upon receiving the second state signal, the control unit controls the motor to start according to a second control logic, which is different from the first control logic. Thus, when the handle is in the non-working position area, different starting logics are used to control the motor startup, reducing the probability of accidental start-up of the power tool due to accidental triggering of the switch assembly, reducing user risk, and improving the safety of the power tool.

An automated system for signaling cell growth events using continuous sensor data includes at least one sensor associated with a vessel configured for use in growth of cells, the sensor providing continuous sensor data associated with cell growth, a reader in operative communication with the sensor to collect the continuous sensor data, and a computational unit operatively connected to the reader, wherein the computational unit is configured to receive as input the continuous sensor data and calibration data associated with process conditions, the computational unit further configured to perform signal processing on the continuous sensor data in order to predict at least one of future critical events and generate insights about unexpected behavior.

The invention relates to the technical field of antennas, in particular to a large-scale MIMO array antenna which comprises a mounting rod, a mounting plate and a signal unit, two clamping claws are arranged on the outer side of the mounting rod, an upper folding plate is arranged on the outer side of the mounting plate, a horizontal reset assembly is arranged between one clamping claw and the upper folding plate, and the signal unit is arranged on the mounting plate. The large-scale MIMO array antenna has the function that the mounting plate and the signal unit borne by the mounting plate can be automatically reset in the horizontal direction, the large-scale MIMO array antenna is provided with the horizontal reset assembly and the transverse reset assembly, the reset functions of the mounting plate and the signal unit in the horizontal direction and the transverse direction are achieved respectively, the continuous concentrated load of strong wind on the mounting rigid structure can be buffered, and the mounting reliability is improved. The large-scale MIMO array antenna has the advantages that the support, the connecting piece and the like are prevented from being fractured due to the fact that load exceeds tolerance limit, equipment damage probability is reduced, operation and maintenance stability of a base station is guaranteed, potential safety hazards caused by structural fracture are reduced, and the overall service life of the large-scale MIMO array antenna is prolonged.

The utility model provides an electric connector connection state detection circuit, a detection device and a power plant, the detection circuit is used for detecting the connection state of an electric connector, and the detection circuit comprises a signal injection unit used for injecting a detection signal into the detection circuit; the detection unit is used for outputting a judgment signal according to the detection signal; the acquisition unit is used for acquiring the judgment signal so as to judge the connection state of the electric connector; when the acquisition unit detects the judgment signal, the electric connector is judged to be disconnected, and when the acquisition unit does not detect the judgment signal, the electric connector is judged to be connected. The device for detecting the connection state of the electric connector can judge the connection state of the electric connector through the judgment signal collected by the collection unit, and facilitates the improvement of the quality of high-voltage interlocking detection through the detection of the connection state of the electric connector.

The present invention provides a technique by which an external device can be easily connected to a numerical control device and the external device can be easily operated from the numerical control device. This numerical control device is connected to an external device via a control unit and controls the external device using a numerical control program. The numerical control device comprises: a signaling unit for controlling the action of the numerical control device according to a signal state; a control path selection unit for selecting a control path according to an input from the signaling unit; and a display / operating unit for displaying the state and operating the numerical control device.A control path selection / operating unit for the external device, enabling the selection of a control path for the external device by notifying the signaling unit according to a selection operation for the control path of the external device, and the operation of the control path of the external device by notifying the signaling unit according to an operation during the selection of the control path of the external device; an analysis unit that analyzes a control command for an external device in a numerical control program while the control path for the external device is being executed; a command signal generation unit for the external device that generates a command signal for an external device according to the control command for the external device; and a transmit / receive unit that sends the command signal for the external device to the control device.

The present disclosure relates to a key search device, a vehicle key, a vehicle, and a key search method. The key search device includes a low frequency signal unit configured to generate a low frequency signal and drive a low frequency antenna connected in communication with the low frequency signal unit to transmit the low frequency signal, a radio frequency signal unit configured to generate a first radio frequency signal and drive a radio frequency antenna connected in communication with the radio frequency signal unit to transmit the first radio frequency signal, and receive a second radio frequency signal from the radio frequency antenna and analyze the second radio frequency signal to acquire key search data from the second radio frequency signal, and a first control unit configured to generate a key search command and transmit the key search command to the low frequency signal unit and the radio frequency signal unit to drive generation of the low frequency signal and the first radio frequency signal, respectively, and receive the key search data from the radio frequency signal unit and generate a key search result from the key search data.

The present invention relates to a method for improving the detection performance of an electrochemical biosensor and its application in a ratiometric electrochemical biosensor. Methylene blue and cholesterol-modified double-stranded DNA probes are immobilized on a gold electrode modified with a 1-hexanethiol assembly layer via hydrophobic interaction, thereby improving the stability of the methylene blue at the gold electrode interface and the immobilization efficiency of the double-stranded DNA probe at the gold electrode interface. In a potassium ferricyanide-mediated electrocatalytic system, the methylene blue on the gold electrode serves as a signal unit, and ferrocene is introduced as another signal unit. The 1-hexanethiol assembly layer on the gold electrode can shield [Fe(CN)6] 3‒ Electron transfer between the electrode interface and methylene blue enables simultaneous signal amplification of both methylene blue and ferrocene. Methylene blue, acting as an electron mediator, enhances the signal response of ferrocene, achieving secondary signal amplification of ferrocene, thereby improving sensor detection sensitivity. The ratiometric electrochemical biosensor constructed using this method exhibits excellent sensitivity, accuracy, and selectivity.

The embodiment of the invention provides a time domain separation method and system for a non-cooperative communication signal, and the method comprises the steps: firstly obtaining a mixed signal set which comprises the superposition of a plurality of different source signals in a non-cooperative communication scene, and enabling each superposed signal unit to carry a time domain feature mark of asynchronous transmission; performing dynamic characteristic association processing on the mixed signal set, and capturing an instantaneous frequency hopping characteristic and a phase continuity characteristic; constructing a time domain separation dynamic model based on the features, wherein the model comprises a feature association weight and a time domain boundary judgment rule; iterative boundary optimization processing is carried out on the mixed signal set through the model, the time domain independent distribution interval of each source signal is determined, and a single source signal unit is obtained; and finally, splicing and integrating the signal units in sequence, and outputting a time domain separation result set. According to the invention, the accuracy and effectiveness of non-cooperative communication signal separation are improved.

The invention provides a ripple signal generation circuit and a switching converter, and the ripple signal generation circuit comprises a first signal unit which comprises a first adjustment module and a first output module; the second signal unit comprises a second adjusting module and a second output module, and an output node of the second output module is connected with a second node of the first output module; in the switching period, the first adjusting module and the second adjusting module work cooperatively to adjust the voltage of the first node and the output node of the first output module, and a ripple signal is obtained according to the voltage difference value of the first node and the output node. The ripple signal generation circuit provided by the invention mixes the triangular wave signal and the sawtooth wave signal to generate the ripple signal. Therefore, the ripple signal not only has the advantages of the triangular wave signal to ensure the stability of the system, but also has the advantages of the sawtooth wave signal to improve the dynamic response performance of the system.

The invention provides a scan driver and an electronic device. The scan driver includes a cell stage including a plurality of stages configured to receive a plurality of clock signals and sequentially output a plurality of scan signals. The cell stage includes one shared circuit and a plurality of buffer circuits corresponding to the plurality of stages, respectively. The sharing circuit includes: a first transistor configured to supply a start signal to a first node based on a first clock signal received from a first clock line; a second transistor configured to supply a first clock signal to a second node based on a voltage of the first node; and a third transistor configured to supply a gate low voltage to the second node based on the first clock signal. Each of the plurality of buffer circuits is directly connected to the first node and the second node, and outputs a plurality of scan signals.

An object of the present invention is to provide a neuromorphic system including a synaptic unit capable of causing a gradual change in resistance for analog information processing, and an operating method therefor. In order to achieve the above object, an aspect of the present invention may provide a neuromorphic system including an input signal unit for generating an input signal, a synapse unit including a plurality of synaptic units that receive a signal of the input signal unit and cause a current to flow according to a set weight, an output signal unit for generating an output signal by receiving a current generated from the synapse unit, and a controller unit for controlling the input signal unit, the synapse unit, and the output signal unit, in which the input signal unit includes a digital-to-analog converter (DAC), the synaptic units include a plurality of memory cells that are connected to each other and are each capable of selectively storing a logic state, the plurality of memory cells are arranged in a cross-point structure including an input electrode line and an output electrode line that cross each other to form one or more memory arrays, the output signal unit includes an analog-to-digital converter (ADC), and the controller unit generates an analog input signal through the DAC in the input signal unit, allows the generated analog input signal to be applied to each of the plurality of memory cells included in the synaptic unit so that a current flows, and generates a sum of currents flowing from the plurality of memory cells as the output signal through the ADC in the output signal unit.

The rotary robot for detecting the arch rib of the concrete-filled steel tube arch bridge comprises a robot shell, a motor, a motor driver, a knocking signal unit, a positioning detection unit and a sound collector used for collecting knocking signals of the knocking signal unit, the robot shell is cylindrical, and a rotating shaft is arranged in the middle of the robot shell. The motor is connected with the rotating shaft through the motor driver, the positioning detection unit and the sound collector are both arranged in the robot shell, a plurality of supporting rods are symmetrically arranged in the circumferential direction of the two sides outside the robot shell in an array mode, and each supporting rod is provided with an electromagnet. The knocking signal unit comprises push rod supporting shells, an electric push rod and a push rod controller, the push rod supporting shells are arranged between every two adjacent supporting rods, the electric push rods are installed on the push rod supporting shells, and the push rod controller is connected with the electric push rods.