摘要:
A network for performing a stimulus response experiment, for example to measure a propagation delay between different locations on an object contains a node apparatus and a further node apparatus. The node apparatus performs stimulus generation and a further node apparatus performs sensor data capture. The node apparatus comprises a handling circuit configured to control timing of stimulus generation based on a trigger signal. The experiment is prepared in a computer of the node apparatus. The computer supplies a command to a transmitter circuit to command the transmitter circuit to transmit a message to the further node apparatus. The transmitter circuit is used both to transmit the message in response to the command and to generate the trigger signal in a predetermined relation to a time of transmission of the message. Thus, accurate coordination timing is ensured in spite of possible inaccuracies in the preparation control circuit.
摘要:
A traffic information unit (MD1, MD2, MD3) according to the invention comprises a facility (MI) for tracking vehicle state information of individual vehicles present at a traffic infrastructure and a facility (T) for transmitting said vehicle state information to a vehicle (70B, 70E). A traffic information system may comprise a plurality of these traffic information units. The invention further comprises a vehicle management system (C) for a target vehicle (70B, 70E) that is capable of receiving and using the vehicle state information and a vehicle provided therewith is provided. Additionally a method for controlling traffic is provided.
摘要:
An object tracking system is described comprising - a plurality of sensor nodes (10) that each provide a message (D) indicative for an occupancy status of a detection area of an object infrastructure monitored by said sensor node, - a map-integrator with - an object database facility comprising state information of objects present at the object infrastructure, and a database updating facility (DBU) for updating the database facility (32, 34) on the basis of messages (D) provided by the sensor nodes.
摘要:
A system (100) for corrosion monitoring comprises first ultrasonic transducer units (4) for transmitting ultrasonic waves along a surface (3) of an object (2), second ultrasonic transducer units (5) for receiving the transmitted ultrasonic waves, and a corrosion detection device (1) for processing transducer signals to detect corrosion of the surface (3) and for communicating corrosion data derived from the transducer signals to a remote station (20). The system (100) is arranged for communicating the corrosion data only if the detected corrosion change exceeds a threshold, thus saving energy if no corrosion change is detected.