摘要:
Systems (100) and methods (400) for powering an electrical load (322) in an environment. The methods involve using a battery (310) to simultaneously supply electrical energy to control electronics (308, 316) and a Super Capacitor (“SC”) storage element (314) immediately after a system has been disposed in the environment and turned on. In effect, the control electronics are caused to perform intended functions thereof nearly instantaneously after turning on the system. The SC storage element is charged from a first charge state in which approximately zero volts exist across terminals thereof to a second charge state in which greater than zero volts exists across the terminals. The SC storage element is then used to supply electrical energy to the electrical load of the system so as to cause the electrical load to perform intended functions thereof.
摘要:
Systems and methods for detecting an opening and closing of an object, such as a door or window. The methods comprise: causing a piezoelectric transducer to oscillate in response to an opening of the object; harvesting energy generated as a result of the piezoelectric transducer's oscillation to power a transceiver; and transmitting, from the transceiver to a remote device, information indicating that the opening of the object has been detected by a wireless sensor coupled to the object. The information may specify a logical address linked to a physical location of the object (e.g., a MAC address).
摘要:
A mixing inlay (102) is provided which includes a first radiating element (110a), a second radiating element (110b), and a non-linear mixing component (112) connected between adjacent end portions (114a, 114b) of the first and second radiating elements. The mixing inlay is configured to receive a first exciter signal having a first frequency and a second exciter signal having a second frequency, and in response, to radiate a mixing product signal produced by the mixing inlay from the first and second exciter signals. A conductive parasitic element (116) is disposed within a near field of the re-radiating transponder. A distance provided between the conductive parasitic element and the radiating elements is varied over the length of the conductive parasitic element to enhance a sideband signal generated by the mixing inlay.
摘要:
A security tag includes an EAS component having a defined surface area, and an RFID component having a defined surface area. The EAS component surface area is configured to at least partially overlap the RFID component surface area. The RFID component includes an antenna which at least partially overlaps the first surface. A substantially planar spacer having a thickness is at least partially disposed between the defined surface areas of the EAS and RFID components. The RFID element read range is affected and controlled by the spacing between the RFID element and the EAS element. The RFID reader is capable of activating the RFID component when the RFID component is within the read range. The antenna includes a magnetic loop antenna in electrical contact with a spiral antenna to increase near field read response.
摘要:
A security tag includes an EAS component having a defined surface area, and an RFID component having a defined surface area. The EAS component surface area is configured to at least partially overlap the RFID component surface area. The RFID component includes an antenna which at least partially overlaps the first surface. A substantially planar spacer having a thickness is at least partially disposed between the defined surface areas of the EAS and RFID components. The thickness of the spacer determines a read range between an RFID reader and the RFID component. The RFID reader is capable of activating the RFID component when the RFID component is within the read range. The antenna has a complex impedance, and the EAS component forms a part of an impedance matching network of the antenna.
摘要:
A handheld barcode/RFID reader includes a printed circuit board having a first side and a second side opposite the first side. The first side includes at least a portion of barcode/RFID electronic circuitry affixed thereto. The second side contains a ground plane for the electronic circuitry. The handheld barcode/RFID reader further includes a patch antenna, electrically coupled to the circuitry, and mounted on the second side of the printed circuit board such that the ground plane of the printed circuit board also provides a ground for the patch antenna.
摘要:
A security device detaches a combination electronic article surveillance (EAS) and radio frequency identification (RFID) tag (EAS/RFID tag), and includes a detacher (magnet) to selectively disengage a clutch release disposed in a first portion of the combination EAS/RFID tag, a near field circular microstrip antenna configured to electronically read information stored in a second portion of the combination EAS/RFID tag. The antenna encircles the detacher and reads information from the second portion of the combination EAS/RFID tag at a position relative to the detacher when the second portion of the tag is disposed at any angle relative to the detacher and only when the detacher is positioned to disengage the clutch release. As long as the portion of the EAS/RFID tag containing the clutch end mechanism is located over the detaching magnet, the RFID label is in a valid detection zone regardless of its orientation relative to the antenna.
摘要:
A security tag and system for securing objects, the system and security tag includes an acousto magnetic (“AM”) electronic article surveillance (“EAS”) component that has a housing with a defined surface area. The housing of the EAS component includes a perimeter boundary that defines an EAS component plane. The system and security tag further include a radio frequency identification (“RFID”) component that includes an integrated circuit and a dipole antenna defining an RFID component plane that is substantially coplanar with the EAS component plane. The integrated circuit and the dipole antenna are positioned externally along the perimeter boundary of the EAS component.
摘要:
A method and an analogous system for tuning an RFID label prior to application to an article are disclosed. The method includes providing an RFID label having at least one antenna disposed therein, identifying an article, relaying information related to the identification of the article to a controller, with the controller including a memory of predetermined tuning parameters for the article, retrieving from memory one or more of the tuning parameters for the article; and adjusting the tuning parameters of the RFID label to correspond to the article by altering a geometric parameter of the antenna of the RFID label. The system includes a cutting device to alter a geometric parameter to correspond to the article by removing material from at least one antenna forming part of the RFID label.
摘要:
A security tag includes an EAS component having a defined surface area, and an RFID component having a defined surface area. The EAS component surface area is configured to at least partially overlap the RFID component surface area. The RFID component includes an antenna which at least partially overlaps the first surface. A substantially planar spacer having a thickness is at least partially disposed between the defined surface areas of the EAS and RFID components. The thickness of the spacer determines a read range between an RFID reader and the RFID component. The RFID reader is capable of activating the RFID component when the RFID component is within the read range. The antenna has a complex impedance, and the EAS component forms a part of an impedance matching network of the antenna.