Apparatus for rearing livestock comprising a livestock enclosure, a plurality of sensors, and a plurality of output devices, and methods of operating the same. Methods of determining measurements of animal welfare by processing vocalisations by chicks, especially by detecting the spectral entropy of animal vocalisations. The relationship between chick distress calling in early life and outcome.
A luminaire for an inductive power transfer lighting system includes a luminaire body having a base and a hinged lid. A seal has a first sealing surface mounted in the base and a second sealing surface mounted in the lid. The first sealing surface includes a first power cable receiving channel running from one side of the base to an opposite side. The second sealing surface includes a corresponding second power cable receiving channel. When clamped together by clamping means the lid and base are sealed together and the power cable receiving channels co-operate to form a bore for holding a power cable. At least one of the sealing surfaces includes at least one groove transverse to the direction of the bore.
F21V 23/02 - Agencement des éléments du circuit électrique dans ou sur les dispositifs d’éclairage les éléments étant des transformateurs ou des impédances
H02J 50/10 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique utilisant un couplage inductif
H02J 50/70 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique mettant en œuvre la réduction des champs de fuite électriques, magnétiques ou électromagnétiques
F21V 17/10 - Fixation des parties constitutives des dispositifs d'éclairage, p. ex. des abat-jour, des globes, des réfracteurs, des réflecteurs, des filtres, des écrans, des grilles ou des cages de protection caractérisée par des moyens de fixation spécifiques
F21V 23/00 - Agencement des éléments du circuit électrique dans ou sur les dispositifs d’éclairage
F21V 31/00 - Dispositions d'étanchéité à l'eau ou aux gaz
F21V 21/35 - Éléments de support déplaçables le long d'un élément de guidage avec un contact électrique direct entre l'élément de support et les conducteurs électriques disposés le long de l'élément de guidage
F21V 21/34 - Éléments de support déplaçables le long d'un élément de guidage
Several aspects of power distribution systems are described. One aspect relates to apparatus for providing a direct current to a load comprising one or more light emitting diodes. The apparatus comprises: a rectifier operatively connectable to a secondary winding of a transformer whose primary winding is for carrying a high-frequency alternating current; a first capacitor operatively connectable to the secondary winding; and a second capacitor operatively connectable, at least partly via the rectifier, to the secondary winding. The first and second capacitors together provide a reactance referred to the primary winding which substantially compensates for the reactance of the primary winding.
A luminaire (1) for an inductive power transfer lighting system includes a luminaire body (2) having a base (4) and a hinged lid (6). A seal has a first sealing surface (12) mounted in the base and a second sealing surface mounted (14) in the lid. The first sealing surface (12) includes a first power cable receiving channel (30) running from one side of the base (4) to an opposite side. The second sealing surface (14) includes a corresponding second power cable receiving channel (32). When clamped together by clamping means (22) the lid (6) and base (4) are sealed together and the power cable receiving channels (30, 32) co-operate to form a bore for holding a power cable (10). At least one of the sealing surfaces (12, 14) includes at least one groove (34, 36) transverse to the direction of the bore.
F21V 31/00 - Dispositions d'étanchéité à l'eau ou aux gaz
F21V 23/00 - Agencement des éléments du circuit électrique dans ou sur les dispositifs d’éclairage
F21V 17/10 - Fixation des parties constitutives des dispositifs d'éclairage, p. ex. des abat-jour, des globes, des réfracteurs, des réflecteurs, des filtres, des écrans, des grilles ou des cages de protection caractérisée par des moyens de fixation spécifiques
F21V 21/34 - Éléments de support déplaçables le long d'un élément de guidage
F21S 8/06 - Dispositifs d'éclairage destinés à des installations fixes destinés uniquement au montage sur un plafond ou sur une structure similaire en porte-à-faux par suspension
A luminaire (1) for an inductive power transfer lighting system, the luminaire (1) comprising a luminaire body (2), and a receiving coil (24) within the body (2) and electrically connectable to a lamp (30). The luminaire body (2) is provided with a slot (18), open at a periphery of the body (2) to receive a power cable (34); whereby in use the luminaire (1) can hang from the power cable (34) mounted in the slot (18) and the receiving coil (24) receives power from the power cable (34).
F21V 23/02 - Agencement des éléments du circuit électrique dans ou sur les dispositifs d’éclairage les éléments étant des transformateurs ou des impédances
F21S 4/10 - Dispositifs ou systèmes d'éclairage utilisant une guirlande ou une bande de sources lumineuses avec les sources lumineuses attachées à des câbles électriques lâches, p. ex. lumières d'arbre de Noël
A method of rearing chickens comprises providing a chicken shed (10) having a floor area (12) over which the chickens can move freely. The shed (10) is provided with a plurality of lights (18) arranged to illuminate respective different regions of the floor area (12) so that, collectively, the lights (18) are able to illuminate substantially all of the floor area (12). The shed (10) is provided a plurality of cameras (20) arranged to view respective different regions of the floor area (12) so that, collectively, the cameras (20) are able to view substantially all of the floor area (12). Chickens are provided in the livestock shed (10) on the floor area (12). A controller (22) is provided and is operatively connected to the lights (18) and to the cameras (20). The controller (22) receives and analyses signals, such as images, from the cameras (20). The controller (22) controls the lights (18) to adjust illumination provided to the floor area (12) by the controlled lights (18) in a manner dependent on the signals from the cameras (20). The controller (22) is able to control each light (18) independently of the other lights (18). In some situations, the control of the lights (18) causes a predetermined desired response in the chickens. In some cases, the predetermined desired response overcomes or circumvents an undesirable situation recognised by the controller from analysis of the signals from the cameras (20).
G06K 9/00 - Méthodes ou dispositions pour la lecture ou la reconnaissance de caractères imprimés ou écrits ou pour la reconnaissance de formes, p.ex. d'empreintes digitales
H05B 47/105 - Commande de la source lumineuse en réponse à des paramètres détectés
A01K 31/04 - Planches inclinéesDispositifs pour retirer les excréments
H04N 5/235 - Circuits pour la compensation des variations de la luminance de l'objet
H04N 5/247 - Disposition des caméras de télévision
H04N 7/18 - Systèmes de télévision en circuit fermé [CCTV], c.-à-d. systèmes dans lesquels le signal vidéo n'est pas diffusé
Several aspects of power distribution systems are described. One aspect relates to apparatus for providing a direct current to a load comprising one or more light emitting diodes. The apparatus comprises: a rectifier operatively connectable to a secondary winding of a transformer whose primary winding is for carrying a high-frequency alternating current; a first capacitor operatively connectable to the secondary winding; and a second capacitor operatively connectable, at least partly via the rectifier, to the secondary winding. The first and second capacitors together provide a reactance referred to the primary winding which substantially compensates for the reactance of the primary winding.
A method of rearing chickens comprises providing a chicken shed (10) having a floor area (12) over which the chickens can move freely. The shed (10) is provided with a plurality of lights (18) arranged to illuminate respective different regions of the floor area ( 12) so that, collectively, the lights (18) are able to illuminate substantially all of the floor area (12). The shed (10) is provided a plurality of cameras (20) arranged to view respective different regions of the floor area (12) so that, collectively, the cameras (20) are able to view substantially all of the floor area (12). Chickens are provided in the livestock shed (10) on the floor area (12). A controller (22) is provided and is operatively connected to the lights (18) and to the cameras (20). The controller (22) receives and analyses signals, such as images, from the cameras (20). The controller (22) controls the lights (18) to adjust illumination provided to the floor area (12) by the controlled lights (18) in a manner dependent on the signals from the cameras (20). The controller (22) is able to control each light (18) independently of the other lights (18). In some situations, the control of the lights (18) causes a predetermined desired response in the chickens. In some cases, the predetermined desired response overcomes or circumvents an undesirable situation recognised by the controller from analysis of the signals from the cameras (20).
A novel coupler, coupler housing and ferrite core and associated elements and concepts thereof and therefor for use in particular with an Inductive Power Transfer or Distributed Power System.
H01F 27/26 - Fixation des parties du noyau entre ellesFixation ou montage du noyau dans l'enveloppe ou sur un support
H01F 29/10 - Transformateurs ou inductances variables non couverts par le groupe avec noyau, bobine, enroulement ou écran mobile pour compenser une variation de tension ou un déphasage, p. ex. régulateurs d'induction avec parties du circuit magnétique mobiles
10.
Electrical system using high frequency AC and having inductively connected loads, and related power supplies and luminaires
Electrical systems are provided which include a power distribution system for distributing high frequency AC power having a twisted pair conductor and power tapping element, for instance to an LED or OLED load. The electrical systems include an LED or OLED luminaire having a heat sink and a light diffusing optical element and power supplies for powering LEDs or OLEDs such as those used in the luminaire.
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