摘要:
A system comprises a speed detector, a marker sensor, a controller, a sensor unit, and a processor. The speed detector is configured to generate speed data associated with a movement of a vehicle. The marker sensor is configured to generate marker data based on a detection of an object along a wayside of a guideway. The controller is configured to calculate a distance the vehicle moved, generate location information, and generate an indication the vehicle is stationary. The sensor unit comprises an accelerometer, a gyroscope, and a magnetometer. The sensor unit is configured to generate sensor data based on information gathered by one or more of the accelerometer, the gyroscope, or the magnetometer. The processor is configured to process the sensor data to determine a vehicle position based on the sensor data and the location information. The controller is further configured to compare the location information with the vehicle position.
摘要:
A safety communication scheme for a safety-critical system which includes two or more higher level units that have voting capabilities and one or two sets of lower level units that do not have voting capabilities, involves using one channel between the high and low level units for safety and two channels for redundancy.
摘要:
A safety communication scheme for a safety-critical system which includes two or more higher level units that have voting capabilities and one or two sets of lower level units that do not have voting capabilities, involves using one channel between the high and low level units for safety and two channels for redundancy.
摘要:
In some embodiments, a system includes a trusted network, an untrusted network, on-board equipment on-board a moving object, one or more first security devices on-board the moving object and communicatively connecting the on-board equipment and the untrusted network, and a security device bank communicatively connecting the trusted network and the untrusted network. The security device bank includes a common bus or the local network and one or more second security devices connected to the common bus or the local network.
摘要:
A vehicle-based positioning system (VBPS) for a vehicle moving along a guideway, the VPS includes an inertial navigation system (INS) on-board the vehicle, wherein the INS is configured to detect inertial parameters of the vehicle while the vehicle move along the guideway, the detected inertial parameters including roll, pitch and yaw of the vehicle. The VBPS includes a guideway database, wherein the guideway database is configured to store inertial parameters of the guideway at a plurality of locations along the guideway, the stored inertial parameters include roll, pitch and yaw of the guideway. The VBPS further includes a vital on-board controller (VOBC), the VOBC is configured to determine a position of the vehicle based on a comparison of the detected inertial parameters with the stored inertial parameters. The VOBC is configured to limit comparison of the inertial parameters with the stored inertial parameters based on a latest checkpoint passed by the vehicle.
摘要:
In some embodiments, a system includes a trusted network, an untrusted network, on board equipment on-board a moving object, one or more first security devices on-board the moving object and communicatively connecting the on-board equipment and the untrusted network, and a security device bank communicatively connecting the trusted network and the untrusted network. The security device bank includes a common bus or the local network and one or more second security devices connected to the common bus or the local network.