摘要:
[Object] To provide a physical quantity measuring apparatus that can suppress power consumption, the size of the apparatus, and a load applied to a computing circuit and can perform highly precise physical quantity computations by suppressing noise, without using a special filter [Solution] The physical quantity measuring apparatus includes: a plurality of physical quantity sensors of the same type, each of which detects a physical quantity at intervals of a predetermined time; a computing unit that calculates an output value according to physical quantities detected by the plurality of physical quantity sensors at each time; and a deciding unit that makes a predetermined decision according to an output value calculated about the immediately preceding detection time and to physical quantities detected by the plurality of physical quantity sensors at the current detection time. The computing unit calculates an output value at each time according to a decision result by the deciding unit.
摘要:
A method and apparatus for governing sensor data readings from a plurality of input sensors onboard a communications device. An inventory of available input sensors is generated, and a set of requested input sensors from an application running on the communications device is received. The requested input sensors that are absent from the inventory of available input sensors is identified, and based upon received measured values from the available input sensors, equivalent values for those absent input sensors are derived. The accuracy and precision of the measured and equivalent sensor values are estimated, and those measurements not meeting certain thresholds are filtered. The measured values and the derived equivalent values meeting the predetermined thresholds for accuracy and precision, and the filtered measured values and the filtered derived equivalent values are output to the application.
摘要:
An approach to determining vehicle usage makes use of a sensor that provides a vibration signal associated with the vehicle, and that vibration signal is used to infer usage. Usage can include distance traveled, optionally associated with particular ranges of speed or road type. In a calibration phase, auxiliary measurements, for instance based on GPS signals, are used to determine a relationship between the vibration signal and usage. In a monitoring phase, the determined relationship is used to infer usage from the vibration signal.
摘要:
A tipping indicator (10) for fixing to a side surface of a packing box (1) includes an ink bag (11), an ink absorber (12), and an outer bag (13). The ink bag (11) includes an ink chamber (11a) internally filled with an ink (G). The ink absorber (12) is ink absorptive and has a different color from the ink (G). The outer bag (13) is formed from a film within which the ink bag (11) and the ink absorber (12) are enclosed. At least part of the outer bag (13) has a visual confirmation region (R3) in which the ink absorber (12) is visible.
摘要:
The invention discloses a bicycle treading frequency sensor, comprising a signal acquisition unit arranged on a circuit board and used for acquiring motion acceleration changes or/and angular velocity changes in different rotation directions of a middle axle in real time, a data transmission unit for transmitting the acquired data to a terminal, and a power supply for supplying power to each unit to work. When in use, the treading frequency sensor is fixed on the hollow middle axle of a bicycle, and the middle axle, a crank and pedals of the bicycle rotate synchronously; during riding motion, acceleration change or/and angular velocity change data is acquired in real time and transmitted to the corresponding processing terminal via the data transmission unit for processing, real-time rotating frequency of the middle axle of the bicycle is obtained, and then treading frequency data during riding is acquired. Because the treading frequency sensor skillfully implements counting through periodical changes of acceleration or/and angular velocity data and other data when the bicycle moves and does not need to carry out counting in a sensing mode through periodical relative motion between two separated components, the treading frequency sensor is simple in structure, small in size and works stably and reliably.