8 results about "Rolling code" patented technology

A self-adaptive frequency hopping RKE secure communication method, system, device and medium, the method of which comprises the following steps: initializing the self-adaptive frequency hopping RKE secure system; establishing a communication connection; authenticating the identity of the vehicle and the key; selecting a self-adaptive frequency hopping channel; transmitting control instructions after encryption; updating certificates; on the basis of the widely used rolling code RKE system, a self-adaptive frequency hopping scheme is proposed to transmit signals to avoid interference from signals on the same channel; an encryption scheme for radio frequency signals is proposed to solve the problem that the vehicle cannot execute remote control commands due to signal interference, and to avoid recording signals for password analysis, thereby further improving the confidentiality of communication; a lightweight one-way authentication protocol based on digital certificates is designed to authenticate the vehicle and the key, ensuring the authenticity and integrity of the control instructions, thereby enhancing the security of the entire system.

The utility model discloses a dial switch and rolling code learning multi-combination mode RF pairing remote controller, which comprises a dial setting circuit used for setting a dial and rolling code learning mode or a pure rolling code learning mode, and the learning mode dial setting circuit comprises at least one dial switch SW1 provided with a plurality of switch positions. The learning mode dial setting circuit is connected with a main control circuit which enters a pure rolling code learning mode to set a wireless remote control instruction code when the dial codes of the switch positions of the dial switch SW1 are the same and are zero or enters a dial code and rolling code learning mode to set the wireless remote control instruction code when the dial code of any switch position of the dial switch SW1 is 1; the main control circuit is connected with a key circuit and a transmitting circuit for transmitting corresponding wireless remote control instruction codes according to remote control instructions input by the key circuit, a dial-up and rolling code learning mode and a pure rolling code learning mode are compatible, the number of code values is greatly increased, and the problem of conflicts caused by repeated remote control instruction codes among different remote controllers is solved.

A system for providing ticket based authorized entry of a mobile access device includes a memory, a transceiver and a control module. The memory stores an access code of a ticket of an event to be accessed by the mobile access device. The mobile access device also stores the access code. The control module: determines an amount of time since the ticket was purchased or an amount of time since the access code of the ticket was last updated; and updates the access code stored in the memory and signals the mobile access device via the transceiver to update the access code stored at the mobile access device in response to the amount of time since the ticket was purchased exceeding a first predetermined amount of time or the amount of time since the access code of the ticket was last updated exceeding a second predetermined amount of time.

An encrypted rolling code, a plurality of differing data bit order patterns, and a plurality of differing data inversion patterns are provided. One then selects a particular one of each of these patterns and uses those selected patterns as transmission characteristics when transmitting at least part of the encrypted rolling code.

The invention relates to the technical field of sensor identity verification, and discloses a tire pressure sensor identity verification method and system based on dynamic encryption. The method comprises the following steps: reading a chip ID and a real-time rolling code ID of a tire pressure sensor to be verified by an equipment end to obtain sensor identity data; the device end sends the sensor identity data to the central server through the communication module to form an identity verification request; performing database comparison on the chip ID and the real-time rolling code ID in the identity verification request, analyzing the programming times, and generating a programming permission instruction or a programming dispermission instruction; and the equipment end performs programming operation on the tire pressure sensor according to the programming permission instruction, and feeds back to the central server so as to update the accumulated programming times in the sensor registration record. According to the method, the use frequency of a single sensor is effectively limited, the pirate sensor is prevented from being repeatedly used infinitely, each programming operation can be traced through the auditing log, and the pirate prevention capability of the tire pressure sensor is improved.

This invention relates to the field of data fusion processing technology, specifically disclosing an ultrasonic water meter anti-theft method based on multi-sensor fusion and multi-level response. This invention achieves comprehensive detection of various water theft behaviors such as magnetic interference, physical damage, and casing deformation through a sensor monitoring network; accurately identifies the type and severity of anomalies through multi-source information fusion and intelligent level judgment; securely protects communication data through encryption authentication and rolling code mechanisms; and implements differentiated handling from record keeping and remote alarm to valve shut-off through a hierarchical linkage response mechanism, effectively improving the comprehensiveness of ultrasonic water meter anti-theft monitoring and the adaptability of response handling.

The application relates to the technical field of wireless communication, in particular to a proprietary airspace unmanned aerial vehicle management and control system and method based on communication link intervention. The method comprises the following steps: capturing an unmanned aerial vehicle radio frequency signal through spectrum sensing, extracting physical layer features such as in-phase quadrature components and entropy values, and constructing a multi-dimensional time sequence vector representing communication state changes; inputting the feature sequence into an LSTM unsupervised protocol syntax inference model, learning inter-frame dependence and state transition, and outputting a dynamic protocol syntax tree; constructing a reinforcement learning action space based on the syntax tree, searching for authentication and encryption verification fragile states by injecting a perturbation probe packet; combining a rolling code to observe and predict subsequent code values and calibrate a timestamp and a check bit, sending a takeover frame in a receiving window period, taking over an original remote control link and establishing a unique control channel; issuing a virtual geographic fence and navigation correction, planning an obstacle avoidance path in combination with a three-dimensional potential field, and guiding the unmanned aerial vehicle to safely land.

The invention provides a platform screen door control system and method for rail transit. The system comprises an electric power control module and a screen door control module connected with the electric power control module. Wireless remote control encrypted by 192-bit rolling codes is adopted, crosstalk of civil signals in the same frequency band is effectively avoided, the accuracy and safety of control signals are guaranteed, the system further adopts two-way alternating-current interlocking input, storage battery backup and N + 1 redundant direct-current power supply modules, multi-stage power supply guarantee is formed, and the system is high in reliability and high in reliability. According to the utility model, the system can still operate stably when a local fault occurs, real-time monitoring, remote control and fault alarm of the states of all door controllers can be realized through networking of various buses such as RS485, CAN and Ethernet, a foundation is laid for unmanned stations and intelligent operation and maintenance, multiple safety measures such as current detection anti-pinch, voice prompt and flash alarm are integrated, and the system is very convenient to use. And the passenger safety is guaranteed comprehensively.