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Controlling transmission of pulses from a sensor

A sensor, a technology for transmitting pulses, used in the field of controlling the transmission of pulses from sensors, which can solve problems such as disrupting lighting control systems

Inactive Publication Date: 2015-08-19
SIGNIFY HLDG BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Such a sensing failure could disrupt the lighting control system as a whole

Method used

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  • Controlling transmission of pulses from a sensor
  • Controlling transmission of pulses from a sensor
  • Controlling transmission of pulses from a sensor

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Embodiment Construction

[0025] As an alternative to relying on a central controller or a single central element, it may be desirable to tend to involve some or all of the intelligence that will be embedded across the system in the lighting system, and functions similar to sensing are distributed in separate Between the units. In the following embodiments of the present invention, a distributed active sensing system for indoor presence detection (for example, based on an ultrasonic sensor modality) is provided, and the distributed active sensing system is installed in ( For example, as part of the lighting system) rarely or does not incur the overhead of trial operation. One of the challenges in active presence sensor systems is the potential for cross interference. To this end, time division multiplexing transmission protocol can be used. However, due to clock drift inherent in the sensor, the sensor may drift from its assigned time slot. An exemplary method to ensure slot synchronization is presen...

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Abstract

Apparatus for use in one of a plurality of sensors each having a respective transmitter which transmits pulses for sensing, a respective clock which controls timing of the pulses transmitted from the respective transmitter, and a respective receiver which receives echoed instances of the pulses. The apparatus comprises: sensing logic configured to sense a being or object in dependence on the echoed pulses received back by the respective receiver from the respective transmitter, and timing logic configured to compensate for a clock discrepancy between the respective clock and that of one or more others of the sensors. The timing logic does this by using the respective receiver to listen for instances of the pulses from the one or more other sensors, and adjusting the timing of the pulses from the respective transmitter based thereon.

Description

Technical field [0001] The present invention relates to controlling the transmission of pulses from sensors for use among multiple sensors. Background technique [0002] The presence sensor is a sensor used to remotely sense the presence of life or other objects (usually people). For example, the sensing of presence may include detecting whether a life or object is in motion, determining a measure of its motion (such as speed or velocity), determining its range with a sensor, and / or simply detecting its presence in a certain area (such as by a sensor Definition of the scope). [0003] There are two types of sensors: active or passive. An active presence sensor is a sensor that transmits a detection waveform and then uses the reflection of the waveform received at the sensor to detect presence, for example, certain signal characteristics in the reflected signal are used to determine information related to presence. Examples of active sensors include ultrasonic, radio (such as rad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02
CPCH05B37/0227H05B47/115Y02B20/40G01S7/524G01S7/526G01S15/04
Inventor A.V.潘德哈里潘德D.R.賽塞多弗纳德兹
Owner SIGNIFY HLDG BV
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