Abstract:
The invention relates to a system and method for measuring a physical quantity wirelessly, with a emitter and a passive receiver. On the emitter side, the system comprises an RFID emitter in communication with the RFID receiver. On the receiver side, the system comprises an RFID receiver module, energy storage means supplied by the receiver module, a monitoring module for monitoring the stored energy, a microcontroller module with analog-to-digital conversion means, a measurement module, and an enabling module for enabling the microcontroller module. By means of the monitoring module, the system is adapted to taking periodic measurements only when requested, such that even though peak consumptions are relatively high while taking the measurement, mean consumption remains at values that are low enough to supply the measurement module with the energy stored in the energy storage means without requiring any auxiliary energy source.
Abstract:
Erfindungsgemäß wird ein Überwachungsgerät zur Überwachung eines elektrischen Energiespeichersystems (1), mit einer Datenschnittstelle (2), die zumindest dazu vorgesehen ist, Daten und/oder Parameter aus dem Energiespeichersystem (1) auszulesen, mit zumindest einer Datenverarbeitungseinheit (3), die dazu vorgesehen ist, mittels der Datenschnittstelle (2) ausgelesene Daten und/oder Parameter zu verarbeiten, und mit zumindest einem Energiespeicher (4), der dazu vorgesehen ist, zumindest die Datenverarbeitungseinheit (3) zumindest zeitweise mit Energie zu versorgen, vorgeschlagen.
Abstract:
A wireless field device assembly comprises a process sensor, a housing, a power module, and a processor. The process sensor is configured to monitor a process variable and produce a sensor signal. The housing encloses an interior space of the wireless field device. The power module comprises an energy storage device and a connection to a local power source, and is configured to be housed in the wireless field device. The processor is located within the interior space, and is powered by the power module. The processor produces a fault signal value used to differentiate between energy storage device faults, local power source faults, and no-fault states.
Abstract:
A radio-frequency enabled remote sensing device which can be deployed as a single device or a system of networked devices for gathering environmental data. The device is fully integrated and autonomous.The device operates using solar energy and is battery free due to power saving features of its control module and communications module. The device may operate in a sleep/wake cycle to further conserve power during low light conditions.
Abstract:
A photovoltaic (PV) panel monitoring apparatus includes a monitoring module for measuring parameter values related to PV panel output, comparing measured values against minimum and maximum values saved in the monitoring module, and outputting an alarm signal when a measured value is outside a range defined by the minimum and maximum values. An alarm signal causes a visual indicator to activate and an audible indicator to sound, thereby assisting maintenance personnel in locating a PV panel with an out-of-range parameter value. The monitoring module further includes a PV panel identification memory for saving an identification code for each PV panel in a PV array. The identification code is transmitted with time, date, and parameter data when the monitoring module detects an out-of-range parameter value. Data may optionally be transmitted from the monitoring module through a communications input/output port or through a wireless transmitter to an external monitoring and control system.
Abstract:
The present invention relates to a wireless sensor system that powered by the harvesting of ambient energy such as wind, solar, thermal, vibration or radio frequency (RF). The energy harvesters generate electrical power for use in individual sensor motes (1), thus eliminating the need to deliver power to each sensor mote from a central source. The sensor motes (1) comprise of sensors (10) that generate data signals based on various environmental parameters measured, as well as wireless transmitters (50) that send the data signals containing the sensor measurements to a router (120) located in the vicinity. The routers (120) are also powered by larger capacity energy harvesters (140). The routers (120) act as wireless relays and further transmit the data signals to a collector (130).
Abstract:
A wireless sensor device of low energy consumption operates over a prolonged period of time for providing a reliable sensor result. The wireless sensor device includes a sensor configured to sense a target object and provide a sensor signal of varying levels indicative of condition of the target object, a signal processing circuit configured to amplify the sensor signal and give an amplified electric analog signal, and a detection circuit configured to receive the amplified analog signal and provide a detection output when the electric analog signal goes beyond a predetermined detection threshold. Also included in the device is a radio transmitter which transmits a radio detection signal in response to the detection output. Further, the device includes a power supply configured to provide an electric power to the signal processing circuit and the radio transmitter; and a power generating element which converts an external energy into the electric power to be accumulated in the power supply. The controller is included to activate the radio transmitter only in response to the detection output, permitting the radio transmitter to generate the radio detection signal. Thus, the radio transmitter can be kept inactivated until receiving the detection output, thereby saving energy to prolong the operating life of the device.
Abstract:
A building element (1), building structure, an apparatus and a method for monitoring condition of the building element or structure is disclosed. There is provided a building element, comprising at least two internal nodes (2; 2a, 2b; 2c, 2d; 10) located inside the building element (1) and capable of wireless radio communications, wherein at least one internal node (2; 2a, 2b; 2c, 2d; 10) is configured to determine condition information of the building element based on at least one signal sent between the internal nodes (2; 2a, 2b; 2c, 2d; 10).
Abstract:
An apparatus may include a control unit to control display of a connection path and at least one indication unit between a first mark and a second mark according to a connection operation by a user connecting the first mark and the second mark.