Abstract: In one aspect the invention provides a method of operating a time of flight camera which includes the steps of capturing a sequence of time of flight camera data frames using a set of step frequency modulation signals to provide a time of flight camera data set, then completing a spectral analysis of the dataset which identifies frequency and phase value pairs indicative of the range of the camera to an object represented in the data frames. Next an estimated camera range value to an object represented in the data frames is determined using the frequency value, then a corrected camera range value is determined using the estimated camera range value and the phase value. A camera output is then provided which identifies the corrected range values of at least one object represented in the data frames of the dataset.

Abstract: In one aspect the invention provides an assessment apparatus which includes two terminal connectors configured to electrically connect the assessment apparatus to the positive and negative terminals of a battery being assessed. The apparatus also includes a response measurement system configured to measure the terminal voltage and current of the battery when supplied with at least one alternating test current having a frequency less than 1 Hz and/or less than an impedance transition frequency associated with the battery being assessed. Also provided is a processor in communication with the response measurement system and being configured to output a performance assessment indicator for the battery being assessed by calculating at least one impedance for the battery using terminal voltage and current measurements communicated by the response measurement system.

Abstract: In one aspect the invention provides an assessment apparatus which includes two terminal connectors configured to electrically connect the assessment apparatus to the positive and negative terminals of a battery being assessed. The apparatus also includes a response measurement system configured to measure the terminal voltage and current of the battery when supplied with at least one alternating test current having a frequency less than 1 Hz and/or less than an impedance transition frequency associated with the battery being assessed. Also provided is a processor in communication with the response measurement system and being configured to output a performance assessment indicator for the battery being assessed by calculating at least one impedance for the battery using terminal voltage and current measurements communicated by the response measurement system.

Abstract: A method for determining a distance to an object using an amplitude modulated continuous wave range imaging device includes emitting a modulated illumination signal. The modulated illumination signal is modulated with a pseudo random code. An image sensor is modulated based on the pseudo random code to capture a plurality of samples of the modulated illumination signal reflected from the object. A phase shift between the plurality of samples and the modulated illumination signal is determined.

Abstract: An apparatus for regulating AC power of a power source in a power circuit is provided. The apparatus includes a full-wave bridge rectifier, a power transistor array, and a controller. The full-wave bridge rectifier is configured to receive an AC input put from the power source. The power transistor array is connected to the full-wave bridge rectifier. The power transistor array is configured to receive the AC input from the full-wave bridge rectifier and to generate an AC signal. The power transistor array may include only a single transistor or a plurality of transistors connected in series, for example. The controller is connected to the power transistor array. The controller is configured to receive the AC signal from the power transistor array, or the output of the AC regulator in some embodiments, and to determine a correction output to send to the power transistor array to control an AC impedance of the power circuit to generate an AC output.

Abstract: Methods and devices for correcting for motion blur in range cameras without increasing acquisition speed or reducing the overall quality of the distance determinations, by identifying moving objects in a scene and determining the speed and direction of the objects.

Abstract: An amplitude modulated continuous wave range imaging device has a signaling device configured to emit an intensity modulated illumination signal. An image sensor is configured to capture a plurality of images of a reflection of the modulated illumination signal. The captured images include intensity and/or phase components for a plurality of pixels of the image sensor. Each pixel includes a first modulation terminal having a first capacitive component. A first driver is configured to charge a first set of modulation terminals of the plurality of pixels. A second driver is configured to charge a second set of modulation terminals of the plurality of pixels. A charge transfer circuit is connected between the first set of modulation terminals and the second set of modulation terminals. The charge transfer circuit is configured to transfer charge between the first set of modulation terminals and the second set of modulation terminals.

Abstract: The invention provides a power surge protection apparatus which includes at least one large capacitor used within a surge protection circuit associated with an electrical load to be protected. This large capacitor or capacitors are arranged to divert and store at least a portion of the energy present in a transient voltage surge to prevent or mitigate damage to the protected electrical load. In preferred embodiments the invention uses large capacitors in the form of electrical double layer capacitors.

Abstract: An antimicrobial composition is provided, including melaleuca oil, or an isolated fraction or an active agent or equivalent thereof, manuka oil, or an isolated fraction or an active agent or equivalent thereof, and at least one galloyl moiety.

Abstract: This invention relates to a method for purifying metal alloy and intermetallic powders. Particularly, the present invention relates to a method for the reduction or elimination of the content of the dissolved oxygen and to remove the metal oxide inclusions from metal alloy and intermetallic powders including the steps of: a) placing the metal in powder form into a reaction apparatus; b) introducing a suitable carrier substance to the metal powder; and c) introducing calcium vapour into the reaction apparatus to create a reaction between the metallic powder and calcium vapour thereby removing inclusions in the metal as shown in FIG. 11.

Abstract: The present invention relates to an energy conversion device including a roofing material having one or more open channels and one or more photovoltaic modules, characterised in that the one or more photovoltaic modules is bonded directly or indirectly to the roofing material so as to form one or more covered channels through which fluid can flow. In this manner an energy conversion device may be formed in a standard roofing material combining the benefits of Photovoltaic modules to generate electricity and a solar thermal collector to provide heat from the Sun in a single integrated device.

Abstract: The present invention relates to a sampling device for capturing samples from a fluid environment. The invention has particular application to the capture of phytoplankton samples from bodies of water. The invention is adapted to allow a sampling net to be easily manipulated by a user. Means of minimising and/or eliminating potential contamination of any collected samples are also provided.

Abstract: The present invention is directed to the use of honey in medical dressings. Preferred embodiments modify honey with a viscosity increasing agent, resulting in a range of possible compositions including ointments and salves, self-adhesive gels such as for use on mouth ulcers and pustules, and pliable or flexible sheets which can be used as a wound covering. Preferred viscosity increasing agents include both particulate and continuous gels, respective examples of each including agars and alginates. Selected honeys preferably, but not necessarily, exhibit antibacterial properties other than what is merely conferred by osmolarity and sugar concentration effects.