摘要:
A system for generating information identifying a two-dimensional location of objects in within a space includes a plurality of wireless modules and first and second transceiver systems. Each of the plurality of wireless modules corresponds to one of the objects. The first and second radio transceiver systems are spaced apart by a predetermined distance and are disposed proximate the space. The first and second radio transceiver systems are operable to selectively transmit a signal to select wireless module, receive a response signal from the select wireless module, and generate first information based on a detected relationship between the selective transmission and the receipt of the response signal. The system further includes a device operable to calculate a two-dimensional location of the select wireless module based on the first information generated by the first radio transceiver system and the first information generated by the second radio transceiver system.
摘要:
A remote sensor assembly includes a silicon substrate, a plurality of microelectromechanical system (MEMS) sensors supported on the silicon substrate, a wireless communication circuit supported on the silicon substrate, and a processing device supported on the silicon substrate. The processing device is operable to obtain measurement values from at least one of plurality of MEMS sensors, perform a first filtering operation on the measurement values, and determine whether to cause the communication circuit to transmit a signal to an external device based on the first filtering operation.
摘要:
A circuit arrangement and a method for synchronizing clocks in a network is provided, comprising a plurality of at least two nodes, wherein at least two of said nodes can communicated with each other and each have a local clock, wherein, in a receiving one of said nodes, from at least one transmitting other such node, a global time transmitted by said transmitting one of said node of said transmitting one of said nodes is received, and a global time of said receiving node is determined or estimated as a function of both the received global time of said transmitting node and of a local time of the receiving node's own local clock.
摘要:
The invention relates to a compressor (2) which is encapsulated in a housing (4) and which can be rotated about the axis (16) of its crankshaft (8) while maintaining the oil lubrication of the moving parts of the compressor. The interior (14) of the housing (4), in which an oil sump (18) is located, is connected flow-wise to the compressor (2). According to the invention, the interior (14) is connected to two gas lines (24, 26) which lead to a common manifold (32) via at least one shutoff valve (28, 30). The connecting openings (25, 27) of the two gas lines (24, 26) leading into the interior (14) are arranged opposite to one another in the vicinity of the axis (16) of the crankshaft (8). By these measures, the compressor can be inclined relative to the horizontal over a wide angular range without lubricating oil flow into the gas loop.
摘要:
A method and related system are provided for locating a current position or a coupling location of a mobile unit, which can send or receive for location determining purposes, using a leaky waveguide, wherein a radio signal is fed from the mobile unit into the waveguide or vice versa, wherein the signal is sent by the mobile unit and received by the two transmitting and receiving (T/R) apparatuses, or one signal is sent by each of the two T/R apparatuses and received by the mobile unit, wherein a receiving time is determined for each received signal, and the current position or the coupling location is determined from two such receiving times. The T/R apparatuses, arranged at opposite ends of the waveguide, are synchronized relative to each other prior to the determination of the current position or coupling location, or prior to the reception of the signal.
摘要:
A radio transmitter is provided at least comprising a signal generator for generating a continuous signal and an antenna for outputting a transmission signal, wherein at least one output of the signal generator is connected with at least one input of the antenna. Herein, the signal generator is connected with the antenna via an interrupt unit connected between the two for selectively interrupting and maintaining a signal connection between the signal generator and the antenna.
摘要:
A remote sensor assembly includes a silicon substrate, a plurality of microelectromechanical system (MEMS) sensors supported on the silicon substrate, a wireless communication circuit supported on the silicon substrate, and a processing device supported on the silicon substrate. The processing device is operable to obtain measurement values from at least one of plurality of MEMS sensors, perform a first filtering operation on the measurement values, and determine whether to cause the communication circuit to transmit a signal to an external device based on the first filtering operation.
摘要:
A radio transmitter is provided at least comprising a signal generator for generating a continuous signal and an antenna for outputting a transmission signal, wherein at least one output of the signal generator is connected with at least one input of the antenna. Herein, the signal generator is connected with the antenna via an interrupt unit connected between the two for selectively interrupting and maintaining a signal connection between the signal generator and the antenna.
摘要:
In a self-organizing sensor network, a number of sensor nodes organize themselves and include sensor elements, distance measuring elements and communication elements for that purpose. The sensor network is able to precisely locate individual, in particular mobile, sensor nodes.
摘要:
The invention relates to a method for increasing the accuracy of a measurement of a radio-based locating system comprising a mobile station and at least one fixed station, wherein the movement of a mobile station from an initial position is detected by way of measuring data of an absolute sensor system and a relative sensor system, a virtual antenna is embodied in the form of synthetic aperture by way of measuring data and the mobile station is focused on the fixed station and/or vice versa by using the synthetic aperture.