Abstract: A motion sensor includes an infrared detector having a single linear array of at least four detector elements disposed on a substrate. The motion sensor also includes an optical system to simultaneously direct electromagnetic energy from two or more curtains of monitored volumes onto the linear array of detector elements. The two or more curtains of the monitored volumes having a tilt angle from a vertical orientation of the motion sensor to create a quadrature horizontal spatial relationship between the monitored volumes. Signals from the linear array of detector elements are then processed to detect a quadrature phase relationship between the signals, and an indication of human presence is provided if a quadrature phase relationship is found.

Abstract: A motion sensor includes an infrared detector having a single linear array of at least four detector elements disposed on a substrate. The motion sensor also includes an optical system to simultaneously direct electromagnetic energy from two or more curtains of monitored volumes onto the linear array of detector elements. The two or more curtains of the monitored volumes having a tilt angle from a vertical orientation of the motion sensor to create a quadrature horizontal spatial relationship between the monitored volumes. Signals from the linear array of detector elements are then processed to detect a quadrature phase relationship between the signals, and an indication of human presence is provided if a quadrature phase relationship is found.

Abstract: An apparatus to monitor one or more utility meters includes a communication unit with a processor, a communication interface coupled to the processor, and a probe interface coupled to the processor. A meter monitoring probe that includes a probe head is coupled by a cable to a probe connector capable to mate with the probe interface. The probe head includes an image sensor, an indicator, and a button. The probe head is capable to detect a characteristic of a utility meter that is dependent on a usage of a utility metered, and send information related to the characteristic to the processor. The processor is capable to receive the information from the probe head and send a message related to the usage of the utility over the communication interface, and the image sensor is capable to capture an image in response to a press of the button.

Abstract: A characteristic of a first utility meter is detected with a first probe head, and a characteristic of a second utility meter is detected with a second probe head. The characteristic of the first utility meter is dependent on a usage of a first utility metered by the first utility meter, and the characteristic of the second utility meter is dependent on a usage of a second utility metered by the second utility meter. Information related to the characteristic of the first utility meter is communicated from the first probe head to a communication unit, and information related to the characteristic of the second utility meter is communicated from the second probe head to the communication unit. A message is also sent from the communication unit indicating the usage of the first utility or the usage of the second utility.

Abstract: An apparatus to monitor one or more utility meters includes a communication unit with a processor, a communication interface coupled to the processor, and a probe interface coupled to the processor. A meter monitoring probe that includes a probe head is coupled by a cable to a probe connector capable to mate with the probe interface. The probe head includes an image sensor, an indicator, and a button. The probe head is capable to detect a characteristic of a utility meter that is dependent on a usage of a utility metered, and send information related to the characteristic to the processor. The processor is capable to receive the information from the probe head and send a message related to the usage of the utility over the communication interface, and the image sensor is capable to capture an image in response to a press of the button.

Abstract: A characteristic of a first utility meter is detected with a first probe head, and a characteristic of a second utility meter is detected with a second probe head. The characteristic of the first utility meter is dependent on a usage of a first utility metered by the first utility meter, and the characteristic of the second utility meter is dependent on a usage of a second utility metered by the second utility meter. Information related to the characteristic of the first utility meter is communicated from the first probe head to a communication unit, and information related to the characteristic of the second utility meter is communicated from the second probe head to the communication unit. A message is also sent from the communication unit indicating the usage of the first utility or the usage of the second utility.