A method for controlling vehicle sensor data acquisition using a vehicular communication network includes, receiving a global time signal at the first vehicle and at the second vehicle. The first vehicle synchronizes a local clock signal of the first vehicle with the global time signal, and the second vehicle synchronizes a local clock signal of the second vehicle with the global time signal. Further, the method includes determining a capture interval that minimizes a time between actuation of a sensor of the first vehicle and actuation of a sensor of the second vehicle. The method includes actuating, according to the capture interval, the sensor of the first vehicle and the sensor of the second vehicle. The first vehicle transmits to the second vehicle the sensor data, and the second vehicle transmits to the first vehicle the sensor data.

The invention relates to a system comprising a plurality of boards, each of which comprises a sensor and a control processor. The boards are connected together by a serial bus. One of the boards acts as master and the others as slaves. The master board is suitable for accessing the measurements of the plurality of boards and for sending these measurements, via a UART connection, to a host processor. The acquisition of the measurements takes place according to a specific synchronization method.

A method includes obtaining foot force data that is created by sampling, in accordance with a sampling signal, data from pressure sensing elements of a shoe sensor system. The method further includes obtaining three-dimensional foot data that is created by sampling, in accordance with the sampling signal, data from an accelerometer of the shoe sensor system. The method further includes correlating the foot force data and the three-dimensional foot data in accordance with the sampling signal to produce correlated foot data. The method further includes processing the correlated foot data to determine one or more of: distance traveled during a time period, stride length data, time duration, fatigue indication, injury prevention indicators, elevation tracking for the time period, running optimization, and rotational sport optimization.

The present invention relates to a method and system for gathering data along points of travel using common portable electronic devices that are typically used for other functions. More specifically, the data gathered by these portable electronic devices may be accessed, processed, validated, and used in conjunction with, or alone, to produce, augment, and/or validate other data sets across wide ranges of science and technology.

A data processing device for processing telemetry data obtains sampled data based on output data from a plurality of sensors associated with a vehicle. The data processing device generates first and second sets of sampled values using the sampled data. The first set of sampled values are associated with a first sampling time and the second set of sampled values are associated with a second, subsequent sampling time. The data processing device derives a set of data elements, a data element being indicative of a measure of a change between a sampled value in the first set and a corresponding sampled value in the second set, a position of a given data element in the set of data elements having been determined based on at least one mapping rule. The data processing device encodes the set of data elements and outputs data comprising at least the encoded set of data elements for transmission to a remote data processing unit.

Disclosed are methods and apparatus for calculating sensor timing corrections at a sensor device. The methods and apparatus determine a sampling period as a number of cycles of an internal clock counted while a configured number of samples is captured in a slave device, determine a time interval between samples using an offset from a time of an observed occurrence of a hardware event on a communication link, the offset being received in a command from a master device, and adjust the time interval between samples by iterative digital approximation to correct for differences between timing of the slave device and the master device while concurrently calculating a watermark time corresponding to a sample start time configured by the master device for one or more slave devices.

If input signal is transmitted to a main body unit, a sensor amplifier stores the input signal in itself as measurement data, and transmits the input signal with the added transfer order information to the main body unit. By checking the transfer order information added to the input signal, the main body unit can confirm if the input signal is deficient or not. Upon the end of the measurement of the physical quantity, the main body unit transmits the retransmission request that requests the retransmission of the deficient portion of the data to the sensor amplifier. According to the retransmission request from the main body unit, the sensor amplifier extracts the deficient portion of the input signal data stored in itself and retransmits the extracted input signal data to the main body unit.

Systems and techniques to facilitate generating and/or encoding rotational data associated with a mechanical element are presented. A sensor system can measure rotational speed data and phase data associated with a mechanical element that rotates. The sensor system can also encode the rotational speed data and phase data into a digital data packet. Furthermore, the sensor system can transmit the digital data packet associated with the rotational speed data and phase data to one or more sensor devices in communication with the sensor system.

A method for synchronizing sensors. A ratio of a first data rate of the first sensor to the second data rate of the second sensor is 2.sup.n, where n is an element from the set of natural numbers. A central timer is started. A first countdown timer is generated based on the central timer and the first data rate, and a second countdown timer is generated based on the central timer and the second data rate. The first countdown timer and the second countdown timer are started periodically. The measurement by the first sensor begins at the latest when a first latency equals the value of the first countdown timer, and the measurement by the second sensor begins at the latest when the second latency equals the value of the second countdown timer.

A security network provides reduced power consumption and more robust communication of messages in comparison to conventional wireless systems. Reducing power consumption as discussed herein ensures that the security system is able to operate for a long duration of time, potentially with minimal or no power from an electrical grid. Additionally, redundant communication paths as discussed herein provide a more robust way of selectively forwarding security data to a remote server. The availability of multiple communication paths ensures that a respective remote target recipient such as a server resource or remote communication device operated by a user can be notified of a trigger event during power failure conditions, such as when certain communication functionality of a security system is disabled.