A leak in the membrane of a generally horizontal roof support deck includes dividing the membrane into separate zones and locating a sensor to detect moisture underneath the membrane. A unique digital code address is assigned to sensor where inputs of the sensors are connected to a single power and signaling cable system using a daisy chain. The serial bus controller is to interrogate each of the sensor devices using the address to identify zones where moisture is detected. A transmitting antenna is provided at each sensor which is switched on when moisture is detected for detecting of the sensor from above the membrane by a utility locate device to confirm the location of the sensor.

A leak in the membrane of a generally horizontal roof support deck includes dividing the membrane into separate zones and locating a sensor to detect moisture underneath the membrane. A unique digital code address is assigned to sensor where inputs of the sensors are connected to a single power and signaling cable system using a daisy chain. The serial bus controller is to interrogate each of the sensor devices using the address to identify zones where moisture is detected. A transmitting antenna is provided at each sensor which is switched on when moisture is detected for detecting of the sensor from above the membrane by a utility locate device to confirm the location of the sensor.

Disclosed are a high-speed real-time bus system and a data processing method thereof. Each node device forms an annularly connected topological structure by means of a high-speed real-time bus; a master node device respectively sends a bus clock signal and a data signal to a slave node device of the next grade of the master node device in the topological structure by means of a clock channel and a data channel; each slave node device receives the bus clock signal and the data signal sent from the respective node device of the previous grade, performs data processing according to the bus clock signal and the data signal so as to update the data signal and sends the bus clock signal and the updated data signal to the respective node device of the next grade.

Disclosed are a high-speed real-time bus system and a data processing method thereof. Each node device forms an annularly connected topological structure by means of a high-speed real-time bus; a master node device respectively sends a bus clock signal and a data signal to a slave node device of the next grade of the master node device in the topological structure by means of a clock channel and a data channel; each slave node device receives the bus clock signal and the data signal sent from the respective node device of the previous grade, performs data processing according to the bus clock signal and the data signal so as to update the data signal and sends the bus clock signal and the updated data signal to the respective node device of the next grade.

Disclosed herein are various clusters. A cluster comprises processing nodes that have supervisory roles and subordinate roles. A node in the cluster can have a supervisory or a subordinate role. The cluster can self-orchestrate its roles. The roles of the nodes can be assigned and/or reassigned (e.g., autonomously and/or automatically) by the cluster. Such system may achieve automatic commissioning of the cluster(s), e.g., in a facility.

Systems and methods for vehicle registration are disclosed. A server computer and at least one database are constructed and configured for network communication with at least one vehicle. The at least one vehicle transmits a registration request to the server computer. The server computer assigns a unique registration ID for the at least one vehicle. The at least one database comprises a geofence database storing information of a multiplicity of registered geofences. Each of the multiplicity of registered geofences comprises a plurality of geographic designators defined by a plurality of unique Internet Protocol version 6 (IPv6) addresses. One of the plurality of unique IPv6 addresses is encoded as a unique identifier for each of the multiplicity of registered geofences. The server computer caches the information of the multiplicity of registered geofences on the at least one vehicle.

Systems and methods for vehicle registration are disclosed. A server computer and at least one database are constructed and configured for network communication with at least one vehicle. The at least one vehicle transmits a registration request to the server computer. The server computer assigns a unique registration ID for the at least one vehicle. The at least one database comprises a geofence database storing information of a multiplicity of registered geofences. Each of the multiplicity of registered geofences comprises a plurality of geographic designators defined by a plurality of unique Internet Protocol version 6 (IPv6) addresses. One of the plurality of unique IPv6 addresses is encoded as a unique identifier for each of the multiplicity of registered geofences. The server computer caches the information of the multiplicity of registered geofences on the at least one vehicle.

A control method and apparatus are disclosed in this application. The method includes: After determining a target device that needs to be controlled, a host may send indication information, a control command, and an address of a register of the target device to a control device through an I2C interface, so that the control device may encapsulate the indication information, the control command, and the address of the register of the target device, and send the indication information, the control command, and the address of the register of the target device that are encapsulated to a slave device connected to the control device.

A photovoltaic system and a communication method therefor. The communication method includes: each slave sends a report signal to a host, and monitors a response signal of the host; and if the at least one slave receives the response signal, the corresponding slave executes a corresponding action on the basis of the response signal. Therefore, communication between the host and each slave is achieved in a mode that each slave actively sends the report signal, the host is prevented from adopting a roll call query mode, and occupation of bus resources by the host is reduced.

A communication device includes a parameter setter and a communication controller for cyclic communication to transmit data including a first data piece and a second data piece different from the first data piece and having lower priority for real-time transmission than the first data piece to slave stations. The parameter setter presets a number of divisions n to divide the second data piece before the cyclic communication is started. The communication controller transmits the first data piece to a first slave station in one cycle, divides the second data piece by the number of divisions n, and transmits the divided second data piece to a second slave station in n cycles, where n is the number of divisions. The communication controller transmits, before transmitting the second data piece, data indicating the number of divisions n set by the parameter setter to the second slave station.