摘要:
The systems and methods described herein are directed to techniques for improving battery life performance of end devices in resource monitoring systems which transmit data using low-power, wide area network (LPWAN) technologies. Further, the techniques include providing sensor interfaces in the end devices configured to communicate with multiple types of metrology sensors. Additionally, the systems and methods include techniques for reducing the size of a concentrator of a gateway device which receives resource measurement data from end devices. The reduced size of the concentrator results in smaller, more compact gateway devices that consume less energy and reduce heat dissipation experienced in gateway devices. The concentrator may comply with modular interface standards, and include two radios configured for transmitting 1-watt signals. Lastly, the systems and methods include techniques for fully redundant radio architecture within a gateway device, allowing for maximum range and minimizing downtime due to transmission overlap.
摘要:
Devices, methods, and systems for non-invasive energy consumption monitoring are described herein. One or more device embodiments include a transformer (230) configured to couple the device (122-1,122-2,...,122-N,222) to a circuit conductor (112,112-1,112-2,...,112-N) that is coupled to an additional device (124-1,124-2,...,124-N), a detection module (232) configured to detect a change in a power signal over the circuit conductor, and a transmission module (236) configured to transmit a unique signal associated with the additional device over the circuit conductor if the change in the power signal meets or exceeds a particular threshold.
摘要:
Techniques are disclosed by which RF mesh networks can identify utility distribution topologies by using power line communication combined with wireless networking to identify the mapping of transformers and other distribution equipment at a back office system server. At a specified time, an item of distribution equipment signals a unique identifier by introducing a phase shift in the electric power being delivered by that equipment. A meter node detects and decodes these temporal shifts to obtain an identifier of equipment supplying the power to it. Upon ascertaining this identification, the meter node sends an acknowledgment to thereby register with that equipment. The association of the particular customer's premises with the equipment is also sent to a back office system, to enable a map of the correspondence between meter and the equipment to be generated.
摘要:
A method for non-intrusively monitoring a load including a plurality of appliances includes retrieving a plurality of mathematical models for modeling operation of a respective subset of the appliances. A value of a respective operational parameter is predicted for each of the subsets of appliances. An output of the load is measured. A respective value of each of the operational parameters is calculated based on the mathematical models and the outputs of the load. The predicting, measuring and calculating steps are repeated until a metric pertaining to a difference error between the measured output and the predicted output calculated from the operational parameter and the mathematical models is equal to or below a threshold for one of the subsets of appliances. It is decided that the one subset of appliances is currently operating whose metric pertaining to a difference error is equal to or below the threshold.
摘要:
The described invention presents a method for simultaneous, synchronous and non-invasive monitoring, data logging and data disaggregation from multiple power-, energy-, current-, voltage-, temperature-, power factor-, and power frequency sensors connected in an autonomous local network (1). It provides a mediation layer (2) to any computer in the local network that will enable detection of any of said sensors (3) in the network. When a sensor is detected, the provided mediation layer will choose the correct data logging algorithm (4) to communicate with and log data from the detected sensor. The data logged from said detected sensor will then be stored in a standardized format (5) that can directly be used as a basis for the data disaggregation algorithm, which is provided in the profiler layer (6). Both the mediation and the profiler layer are controlled via a web interface (7).
摘要:
A turbidity measurement device for measuring turbidity of a fluid flowing in a flow tube. A first transducer transmits ultrasonic signals through the fluid in the turbidity measurement section so as to provide a first ultrasonic standing wave between the first and second section ends. A receiver transducer receives the ultrasonic scattered response from particles in the fluid flowing through the turbidity measurement section. A control circuit operates the transducers and generates a signal indicative of the turbidity of the fluid in response to signals received from the receiver transducer. Preferably, the device may comprise a second transducer for generating a second ultrasonic standing wave with the same frequency, and further the two transducers may be used to generate a measure of flow rate by means of known ultrasonic techniques. This flow rate may be used in the calculation of a measure of turbidity. Both turbidity facilities and flow rate facilities may be integrated in a consumption meter, such as a heat meter or a water meter.
摘要:
It is described an electronic device (1) to control the electrical energy delivered to an electric plant (40). The device comprises at least one sensor (2) configured to measure an electrical voltage and an electric current of the electric plant and to generate at least one measurement signal (S_ms) indicating said measurement of the electrical voltage and of the electric current. The device further comprises a control unit (3) electrically connected to the at least one sensor, the control unit being configured to receive the at least one measurement signal and to generate a switching signal (S_sw) indicating a connected or disconnected condition of a plurality of electrical loads (30, 31), wherein each of the electrical loads is switchable between the connected condition wherein the electrical load is electrically connected to the electric plant and a disconnected condition wherein the electrical load is electrically disconnected from the electric plant. The control unit is further configured to generate (110, 150) the switching signal having a value indicating the transition from the connected condition to the disconnected condition of at least one electrical load (31) out of the plurality of electrical loads, by means of an appropriate algorithm that takes into account the values of a first (P1_ct) and second (P2_ct) contractual electrical power threshold.
摘要:
This disclosure relates to an electricity meter for recording the electric energy and an adaptor module therefore. The electricity meter (1) comprises a metering unit (2) for determining the electric energy consumption; a communication unit (3) for communicating data signals within a communication band over power cabling; and a processing unit for controlling the metering unit (2) and the communication unit (3). The communication unit (3) is configured to adapt the communication band to the communication environment.