3 results about "Signaling system" patented technology

Systems, apparatuses, and methods for processing a received OFDM signal are provided. The system comprises a tuner and a signal processing unit. The tuner is configured to receive an OFDM signal. A signal processing unit is configured to search for a possible frequency of a symbol in the received OFDM signal for a TPS lock and to decide an ambiguous frequency range according to a transmission mode of the TPS lock. The possible frequency is close or equal to a center frequency of the symbol.

The invention relates to a signal shielding device and method. The signal shielding device comprises a receiving module, a modulation module and a transmitting module; the receiving module, the modulation module and the transmitting module are connected in sequence; the receiving module is used for receiving a current network signal; the modulation module is used for receiving the current networksignal transmitted by the receiving module and modulating a shielding signal based on a communication system of the current network signal, wherein the communication system modulation shielding signalbased on the existing network signal further comprises the steps of identifying the existing network signal system, generating corresponding modulation signals for different existing network signal systems based on the priori knowledge of the optimal sweep frequency interference effect, and generating a shielding signal based on the modulation signals; and the transmitting module is used for transmitting the shielding signal. According to the signal shielding device and method, the shielding signals can be adjusted according to the change of the existing network signals, different shielding circuits do not need to be arranged for the existing network signals of different systems, the shielding efficiency is high, and the cost is low.

The embodiment of the invention discloses a driving control method and device suitable for a VBTC system. The method comprises receiving, by an intelligent train protection (ITP) system of a train operation control VBTC system using train control as a core, a destination number and a request for changing a destination input by a driver into an onboard machine interaction interface (MMI); determining whether the communication between the ITP system and an intelligent train supervision (ITS) system is normal; and if the communication between the ITP system and the ITS system is interrupted, performing route planning, generating a preliminary driving route, and transmitting the preliminary driving route to the MMI for display. The method in the embodiment of the present invention, when it isdetermined that the communication between the ITS system and the ITP system is interrupted, performs the route planning and generates the preliminary driving route. When a train ahead or a signal device has fault, a train and the ITS system have a communication fault, or a train is temporarily required to modify a destination, the method improves the operation flexibility of train, avoids manual access is required, and greatly improves the overall operating efficiency of the VBTC signal system based on train-to-train communication.