103 results about "Manchester code" patented technology

The invention relates to the technical field of power system safety monitoring, in particular to a power transmission line online safety monitoring method, system and device based on quantum communication and a storage medium. The multi-modal fusion sensor synchronously collects multi-parameter electric signal data such as current, voltage and temperature of the power transmission line, and performs quantum encryption instantaneous recording on the data; based on quantum encryption instantaneous record extraction data, a deep learning adaptive Kalman filtering algorithm is combined with a neural network to predict the operation state of the power transmission line; generating a new Manchester code according to the multi-parameter electric signal data and the operation state predicted value, and encrypting by adopting quantum key distribution to generate a ciphertext; and transmitting the ciphertext to a client based on a terahertz communication channel, decrypting and recovering the data through the quantum key, and carrying out safety early warning. Theoretically uncracked data security assurance is realized by using the unclonable characteristic of the quantum state, high-rate data transmission is realized by terahertz communication, and the transformation from passive monitoring to active early warning is realized by a prediction algorithm.

The invention relates to a digital mutual inductor signal decoding method and device based on an FPGA, and the method comprises the steps: receiving a serial Manchester data signal at a rising edge of each clock period through a receiving module according to a reference clock which is 16 times higher than the Manchester signal frequency, detecting a correct rising edge, starting a synchronous clock, and carrying out the decoding of the Manchester data signal. The method comprises the following steps of: generating a central sample to extract effective data according to 1 / 4 and 3 / 4 positions of each bit period of a data cell, converting the extracted effective data into an NRZ code according to a Manchester encoding rule, and storing the decoded NRZ code into a shift register. According to the invention, high efficiency of a decoding process and flexibility of system operation can be realized. According to the design, the parallel processing capacity of the FPGA and the control advantages of the processor are fully combined, and it is ensured that information of the system flows rapidly and reliably.

The invention provides a chirp modulation-based downlink wake-up receiver implementation method and system, and the method comprises the steps: S1, transmitting a preset wake-up frame to achieve the synchronization with terminal equipment before a transmitter of a wake-up receiver transmits a data frame, the wake-up frame comprises a pure carrier of a preset frequency, a lead code, and a terminal device address sequence and a data sequence based on Manchester encoding; s2, the transmitter generates a baseband signal conforming to a radio frequency front-end mode of the receiver through the wake-up frame, and the baseband signal is subjected to up-conversion and then transmitted in a 433MHz frequency band; and S3, the terminal equipment monitors a channel at any time, demodulates the wake-up frame through envelope detection and intermediate frequency amplification, demodulates a data frame, and finally synchronously sends a wake-up signal and data obtained through demodulation to a post-stage circuit. According to the invention, by designing the wake-up sequence and manufacturing the wake-up circuit, asynchronous wake-up with ultra-low power consumption is realized for the Internet of Things terminal equipment.

The present application discloses a data decoding method and apparatus, an electronic device, and a storage medium. The method comprises: acquiring the clock rate of a single-channel clock; on the basis of the clock rate of the single-channel clock, sampling, at rising edges and falling edges of the single-channel clock, a data stream formed using Manchester encoding, and obtaining a plurality of pieces of sampling data; and decoding each piece of sampling data, and obtaining decoded data of the data stream. According to the data decoding method provided by embodiments of the present application, clock resources required to be occupied when the Manchester-encoded data is decoded can be reduced while improving the decoding efficiency.

The invention discloses a DALI (Digital Addressable Lighting Interface) data frame decoding method for Manchester encoding, which solves the problems of poor universality and high bit error rate caused by a fixed clock in the traditional method. The method comprises the following steps: receiving a DALI frame containing a start bit, a data bit and a stop bit; identifying a start bit, measuring the low level length of the start bit for multiple times, taking extreme values Tmax and Tmin, and checking the ratio (1lt; tmax / Tminlt, Tmax / Tminlt; 1 + n) and then T = (Tmax + Tmin) / 2 is calculated; setting two judgment intervals [T-nT, T + nT) and [2T-nT, 2T + nT) (0lt; nlt; 0.5) judging that the duration of the adjacent jump edge is T or 2T; counting edge overturning times in a 2T window from the middle moment of a data bit, keeping a logic value unchanged in two times, and performing negation in one time; and a stop position is detected through 4T in a non-jump manner. Through dynamic time sequence calibration and adaptive decoding, the decoding reliability in a complex environment is improved, the bit error rate is reduced, and the stability and universality of data transmission of the intelligent lighting system are enhanced.

The invention provides a power transmission line icing detection method and system, and relates to the technical field of intelligent control, and the method comprises the steps: eliminating the transmission interference of an optimization processing signal through a Manchester encoding protocol and a local cache verification algorithm in a channel switching process, and obtaining a clean transmission signal; and inputting the clean transmission signal into a pre-trained deep convolutional neural network, extracting ice layer space attributes through a plurality of convolutional layers and pooling layers, performing feature fusion through a full connection layer, calculating ice layer thickness distribution, identifying ice layer categories through a softmax classifier, and identifying the ice layer categories based on a thickness distribution diagram and an ice layer category identification result. And generating a detection result containing the ice layer thickness value and the spatial distribution attribute. According to the method, regional accurate analysis can be realized, and local feature omission caused by traditional overall analysis is avoided.

The invention discloses a Manchester encoding communication verification system, and relates to the field of encoding, the Manchester encoding communication verification system comprises a core ECU and a plurality of edge ECUs, each edge ECU is internally provided with an SPI controller and is connected with a voltage conversion circuit of an MOSI end and a current conversion circuit of an MISO end; the edge ECU translates Manchester data to be sent into an SPI byte number cache through the CPU core, performs matching verification on an external level signal, and determines a fault source according to a result; the SPI controller takes over SPI byte data according to the request, and sends and receives data according to a preset coding frequency; the DMA controller reads the cached SPI byte data during sending and sends the cached SPI byte data to the SPI controller, and the SPI controller inputs an external level signal during receiving and calls and caches the external level signal through the DMA controller. According to the scheme, the characteristic that the SPI and DMA technologies have no CPU intervention in data transmission is utilized, the processing efficiency of Manchester encoding is improved, and the flexibility and expandability of system encoding verification are enhanced.

The invention relates to a CAN bus control type PS I5 transceiver module which comprises a main control module, a communication interface is composed of a CAN communication module and a serial port, the CAN communication module is used for communicating with other equipment, and the main control module is connected with an upper computer through the serial port for communication; the power supply module reduces the direct-current 12V voltage to the working voltage of the single chip microcomputer to supply power to the main control module; the PS I 5 transceiver chip is respectively connected with the sensor and the main control module, and is used for receiving a Manchester encoding electric signal of a PS I 5 bus and sending an electric signal conforming to the PS I 5 standard to the sensor; the master control module is used for receiving and storing sensor data corresponding to different states and events. Compared with the prior art, CAN and serial communication are combined with a power-down storage state flag bit, so that the equipment can be compatible with a plurality of pieces of equipment for coordinating work. The non-PS I5 production equipment can be refitted into PS I5 sensor production equipment as long as the non-PS I5 production equipment is provided with a CAN communication interface, reading, configuration, analysis and diagnosis of a PS I5 sensor can be carried out, and the production link of the PS I5 sensor is effectively supported.

The invention relates to a Manchester coded signal decoding method and a Manchester coded signal decoding system, and belongs to the field of electronic information, communication and power system automation. A plurality of clocks with the same frequency and different phases are generated according to Manchester encoding signals, the clocks are used for sampling the signals, a phase-shifting clock sampling method is used, dependence on a high-frequency clock is reduced, most interference in communication signals is determined to be eliminated according to a majority voting strategy for sampling results, and the accuracy of the signals is improved. And the seriously distorted signals are corrected according to special value enumeration, so that the interference of signal duty ratio distortion and burrs is reduced, and the decoding reliability is further improved. And finally, determining an original data stream of the signal according to the two level states of each code element. The method is used for decoding high-speed and ultra-high-speed Manchester encoding signals under the conditions of no high-frequency clock, poor data signal quality or unstable clock, and simultaneously realizing self-adaptive communication of different encoding formats.

A device may receive signaling that includes a preamble having a first subset of bits of the set of bits and a payload having a second subset of bits. In some examples, the second subset of bits may be encoded according to a Manchester encoding scheme. The second subset of bits may include fewer bits than the first subset of bits. In some examples, less than a threshold quantity of bits of the first subset of bits includes a same bit value, and each bit of the threshold quantity of bits is consecutive. The device may detect the preamble of the received signaling, and decode the payload of the received signaling including the second subset of bits (e.g., Manchester encoded subset of bits) in response to the detected preamble of the received signaling.

The invention discloses an airborne universal serial communication bus receiving board card based on a MiniVPX architecture, and relates to the technical field of avionics testing. The problems of function solidification, framework limitation and the like generally existing in existing serial communication acquisition board cards and commercially available general products are solved. According to the board card, an FPGA (Field Programmable Gate Array) is adopted as a core controller, an RS-232 / 485 / 422 multi-protocol interface circuit module, an isolation power supply module and a PCIe (Peripheral Component Interconnect Express) high-speed communication module are integrated, and 77 * 110 * 11.5 mm compact packaging is realized through a MiniVPX standard. Three working modes are innovatively supported: a synchronous word / gaptime screening mechanism is provided in a UART (Universal Asynchronous Receiver / Transmitter) mode, NRZ and Manchester multi-code adaptive decoding is realized in a PCM (Pulse Code Modulation) mode, and self-defined frame format configuration is supported in a Manchester code signal mode with a synchronous head. The method is also suitable for the technical field of space constraint and high-density integration of avionics equipment.

A device may receive signaling that includes a preamble having a first subset of bits of the set of bits and a payload having a second subset of bits. In some examples, the second subset of bits may be encoded according to a Manchester encoding scheme. The second subset of bits may include fewer bits than the first subset of bits. In some examples, less than a threshold quantity of bits of the first subset of bits includes a same bit value, and each bit of the threshold quantity of bits is consecutive. The device may detect the preamble of the received signaling, and decode the payload of the received signaling including the second subset of bits (e.g., Manchester encoded subset of bits) in response to the detected preamble of the received signaling.

Systems and methods for controlling valve actuators are provided. The system includes an interface circuit in electrical communication with a wiring connection from a pool / spa control system, and a processor in communication with the interface circuit. The interface circuit extracts a plurality of encoded bits transmitted to the interface circuit from the pool / spa control system over the wiring connection. The plurality of encoded bits could include Manchester-encoded bits that are encoded by the pool / spa control system by altering signals transmitted to the interface circuit over the wiring connection. The processor receives the plurality of encoded bits from the interface circuit and processes the plurality of encoded bits into a control command for controlling operation of the valve actuator. When a valid control command has been generated, the processor executes the control command to operate the valve actuator in accordance with the control command.

The invention belongs to the technical field of Internet of Things equipment production, discloses a photoelectric information transmission system and method based on pulse width modulation, realizes reliable transmission of equipment identification information through an LED optical signal of IoT equipment, and solves the problem of use limitation of traditional wired / wireless communication in a sealed equipment or complex production line environment. In the scheme, a coding transmitting end of IoT equipment converts equipment identification information into a binary data frame, a synchronization head is inserted into a head, and then each bit is coded to drive an LED lamp to form an optical signal sequence; a decoding receiving end receives the optical signal sequence, converts the optical signal sequence into an analog electric signal, amplifies and shapes the analog electric signal, triggers a dynamic decoding mechanism based on a synchronous head, restores a binary data frame according to a Manchester encoding rule, verifies data integrity through a CRC check bit, and extracts equipment identification information; and finally, converting the decoded equipment identification information into a USB signal and transmitting the USB signal to production testing software.

The invention relates to the technical field of PSI5 interfaces, and discloses a PSI5 interface circuit, which comprises a current-to-voltage unit, a switch unit, a threshold voltage generation unit, a comparator COMP and a logic control unit, during normal use, the current-to-voltage conversion unit, the threshold voltage generation unit, the comparator COMP and the logic control unit correctly convert sensor Manchester encoding current data conforming to a PSI5 protocol range, namely current flowing through the switch unit, into digital signals, and the digital signals are output signals of the comparator COMP; on the basis, after an open circuit or short circuit fault is removed, the output end of the comparator COMP may output a high-level signal for a long time, and at the moment, the logic control unit controls the threshold voltage output by the threshold voltage generation unit, so that the output end of the comparator COMP outputs a low-level signal; normal tracking of current and self-recovery of data are realized.

The application provides an LED display control system and method, and relates to the technical field of LED display, and comprises the following steps: a daisy chain topology structure is formed by directly connecting a sending device and multiple receiving devices through a DP cable; an auxiliary signal interface circuit is arranged in the sending device and each receiving device; an AC coupling connection structure is adopted between the auxiliary signal interface circuit and an auxiliary channel differential line pair, and pull-up and pull-down resistors configured in a standard DP interface are removed; the system is configured to transmit auxiliary signals in the daisy chain topology structure by using the auxiliary channel differential line pair, and a Manchester coding mode is adopted when the auxiliary signals are transmitted, so that a transmission rate of greater than or equal to 100 Mbps can be supported. The technical scheme of the application achieves the effects of simplifying wiring and improving backhaul efficiency.

The invention discloses a PSI5 interface circuit current threshold control method, device and equipment and a storage medium, and relates to the field of sensing detection, gradient current thresholds are set for N current comparators, each current comparator generates a Manchester signal based on a sampling current value and a corresponding current threshold, and a corresponding decoding success rate is recorded through a register group; determining a target current comparator based on the decoding success rate recorded by the N paths of current comparators after power-on; obtaining a target current comparator and a current threshold, outputting a Manchester coded signal, and calculating a duty ratio value; and updating the current threshold value of the target current comparator according to the duty ratio value gradient, and updating the N-path decoding success rate. According to the scheme, Manchester encoding signals are not directly and continuously monitored, different current threshold values are set in a gradient mode, the current comparators are screened according to the decoding success rate, then the duty ratio is adjusted, chip computing resources can be optimized to the maximum extent, and the encoding and decoding accuracy can be improved to the maximum extent.

The invention discloses a Manchester code receiving and storing method and system, and the method comprises the steps: firstly converting a serial data signal of a Manchester code into a parallel signal, and carrying out the decoding of the serial signal, enabling the decoding operation to be isolated from a clock signal, weakening the dependence on the clock synchronization in a decoding process, and improving the decoding efficiency. The method is suitable for a scene that a serial signal does not have accurate synchronous clock input, a high-order address of a storage address is defined by judging packet header data, a low-order address of the storage address is determined by packet length, different packet header data are stored in corresponding addresses, classification and address division storage of received data frames according to packet header information is realized, and the storage efficiency is improved. The method can be applied to various bus transmission data protocols, is suitable for various FPGA development, and has good universality and application prospects.

The invention discloses an industrial Internet of Things communication method based on time division. The method comprises the following steps: connecting a main node and a sub-node in an industrial Internet of Things by adopting a single cable; the main node allocates time slots of data transmission and power transmission of each child node at intervals based on a time division technology; each child node performs data transmission and power transmission with the main node in a specified time window according to the time slot; when data transmission is carried out between each child node and the main node, an encoding mode is Manchester encoding, and an adopted communication protocol is a Modbus protocol. According to the invention, data transmission and power transmission in the industrial Internet of Things are integrated in a single cable based on a time division technology, and Manchester encoding and a Modbus protocol are combined, so that the wiring is simplified, the cost is reduced, the line utilization rate is improved, and the communication reliability and high efficiency are ensured.

The application belongs to the field of chip interconnection communication, and particularly discloses a chip interconnection communication method and system based on Manchester coding, which comprises the following steps: a master control device generates and sends a communication frame, the physical layer of which adopts Manchester coding, logic 1 is high-to-low transition, and logic 0 is low-to-high transition, and the frame start / end is defined by a specific high-low level sequence; the data link layer of the communication frame comprises a synchronization code, an address field, a control field, a data field and an end code, the control field comprises pin intervals and quantity identification, and a clock is sent simultaneously to synchronize the slave device; the slave device decodes the received signal, determines the target pin range according to the identification when the address is matched, and sets the pin level according to the data field. The application improves the communication rate and efficiency, simplifies the wiring, and adapts to the chip interconnection requirements in multiple scenes.

The application discloses a tire monitoring method, comprising: in a first running state of a vehicle, detecting tire data by using a first detection frequency corresponding to the first running state; and sending the tire data to the vehicle by using a first sending frequency corresponding to the first running state based on a preset protocol, wherein an encoding mode of the preset protocol is differential Manchester encoding, and a check mode is CRC16. The application also discloses a tire monitoring system, equipment and a storage medium. The application realizes tire monitoring of the vehicle by transmitting vehicle tire data through a communication protocol comprising a specific encoding mode and a check mode, so that the tire data is not easy to be cracked in the transmission process, the anti-interference and intelligence of the tire data are improved, the power consumption is reduced, and the efficiency and accuracy of the tire data transmission are improved.

The invention provides a Manchester coded signal acquisition and decoding method, which comprises the following steps: S1, sending a signal decoding request to slave equipment, and waiting for Manchester coded signal data replied by the slave equipment; s2, continuously acquiring Manchester coded signal data replied by the slave equipment by adopting a double-rate acquisition method; s3, the waveform of the collected Manchester encoding signal data is analyzed and processed, and the duty ratio characteristic of the Manchester encoding signal data is obtained; s4, distributing a plurality of Manchester coded signal data acquired in an acquisition period to a high-level half period and a low-level half period of the acquisition period according to duty ratio characteristics; and S5, decoding the acquired Manchester encoding signal data to obtain decoded data. According to the difference of the duty ratio of the reply signal, deviation correction is carried out on the collected data within a certain range, the problem of data errors only collected in a time sequence state is solved, and the accuracy of data decoding is guaranteed.

The invention provides a cloth paving machine edge alignment method and system, electronic equipment and a medium, and the method comprises the steps: transmitting Manchester encoded pulse waves to a sensor array, and receiving a plurality of level signals fed back by the sensor array; acquiring pulse information according to the level signal, wherein the pulse information comprises the pulse length, the number and the position of a corresponding sensor; and analyzing and processing the pulse information to obtain the position and the inclination angle of the cloth. According to the cloth paving machine edge alignment method, the accurate position and the inclination angle of the cloth can be automatically obtained, and real-time control over the cloth paving machine in the cloth paving process is facilitated.

The present disclosure relates generally to an interface between a host processor device and a peripheral device, such as a camera or sensor, and, more particularly, to improving the generation of data signals with embedded clock information to be more rate-flexible and power efficient. Improved techniques are described herein to embed a clock signal into a data signal (e.g., to minimize the number of channels needed)—while allowing for a variable link rate and avoiding the need for a phase lock loop (PLL) and / or long link training times at the receiver, which can consume large amounts of power and on-chip area. In some embodiments, a modified Manchester encoding scheme, e.g., using a fixed delay for its mid-bit transitions (and wherein the delay is independent of link rate), is used to achieve the dual aims of rate flexibility and power efficiency for an improved data signal interface with embedded clock information.

A control panel for a fire alarm system includes a microprocessor operable to send and receive data. The microprocessor has a serial peripheral interface with a master port and a slave port. A computing device has a Differential Manchester encoder configured to encode data received from the master port and a Differential Manchester decoder configured to decode frames and send the decoded data to the slave port. A method of sending and receiving data is also disclosed.

The invention discloses a differential Manchester encoding generation method and system of an operational amplifier in the field of electronic circuits, and aims to solve the technical problems that a traditional special protocol chip is high in cost and single in adaptive bus standard, and overall replacement is needed for fault maintenance. The method includes: generating a single binary digital logic signal by a digital logic device; inputting the single binary digital logic signal into a pre-stage operational amplifier circuit, and outputting a single-ended three-state analog signal; inputting the single-ended three-state analog signal into a post-stage inverting operational amplifier circuit to generate an inverted analog signal symmetrical to the single-ended three-state analog signal; and combining the single-ended three-state analog signal and the reverse analog signal to obtain a differential Manchester coded signal. According to the method, the cost can be remarkably reduced, and the protocol adaptation flexibility, the hardware compatibility and the system expansibility are improved.

Methods, systems, and devices for wireless communications are described. A first wireless device may generate a signal in accordance with a Manchester coding scheme, such that the signal alternates between a first chip value and a second chip value. The first wireless device may flip a first start or end value of the signal at a first segment of the signal based on a comparison of the first start and end values of the signal within the first segment, or based on a comparison of the first start or end values of the signal to respective start and end values of one or more neighboring segments. The first wireless device may then append a cyclic prefix and transmit the signal to a second wireless device, which may identify and de-flip the flipped chip values based on an observed pattern in the received signal associated with the Manchester coding scheme.

The present application provides a communication method and a communication apparatus. The method comprises: determining a first sequence, wherein the first sequence is the same as the sequence obtained by performing Manchester coding on a base sequence, the first sequence comprises N elements, the base sequence comprises N / 2k elements, any element of the base sequence is represented by 2K levels after the Manchester coding, the 2K levels include two different levels, the base sequence is related to a generalized Gray sequence, the generalized Gray sequence is generated by M stages of registers, the register depth 2P m of an mth-stage register among the M stages of registers is determined by an mth element P m in a second sequence [P], Pm is an integer greater than or equal to 0, and the sum of the first [M / 2] elements in the second sequence is greater than or equal to the sum of the last M-[M / 2] elements; and modulating the first sequence and data to be transmitted to generate a first signal, and sending the first signal. Thus, the timing precision and computational complexity of the preamble or postamble after Manchester coding are balanced.

The application discloses a Manchester decoding method and device and a battery management system applying the same. The Manchester decoding method comprises the following steps: obtaining a reference pulse width according to a synchronization code in Manchester coding; obtaining each first pulse width and each second pulse width according to data codes in the Manchester coding, wherein the first pulse width and the second pulse width are respectively used for representing the width between adjacent rising edges and the width between adjacent falling edges in the data codes; comparing the first pulse width and the second pulse width with the reference pulse width; and when the first pulse width or the second pulse width is greater than the reference pulse width, judging that the logic of two adjacent code elements corresponding to the first pulse width or the second pulse width is different, so as to decode the data codes. The Manchester decoding method in the application can well deal with the pulse width distortion of the signal received by the receiving end under the application condition of long-distance isolated communication, and the error code rate is small.

Methods, systems, and devices for wireless communications are described in which a configuration of a wake-up signal (WUS), synchronization signal (SS), or both, may be selected based on one or more conditions at a user equipment (UE) that is to receive the signal. The configuration of the WUS, the SS, or both, may indicate a value (M) that corresponds to a quantity of bits per duration of time, such as per orthogonal frequency division multiplexing (OFDM) symbol duration. The configuration may also indicate whether an associated signal is transmitted with or without Manchester coding. In some implementations, a UE may transmit an indication of a requested or preferred configuration for a WUS or SS, and may be configured in accordance with the requested configuration.