An actuator in a HVAC system includes a mechanical transducer, a processing circuit, a wireless transceiver, and a power circuit. The processing circuit includes a processor and memory and is configured to operate the mechanical transducer according to a control program stored in the memory. The wireless transceiver is configured to facilitate bidirectional wireless data communications between the processing circuit and an external device. The power circuit is configured to draw power from a wireless signal received via the wireless transceiver and power the processing circuit and the wireless transceiver using the drawn power. The processing circuit is configured to use the power drawn from the wireless signal to wirelessly transmit data stored in the memory of the actuator to the external device via the wireless transceiver, wirelessly receive data from the external device via the wireless transceiver, and store the data received from the external device in the memory.

The present invention provides a wireless interconnection control system for improving sprinkler irrigation uniformity of hose reel irrigator with electric drive comprising a micro processing controller module, a frequency converter, a water pump AC motor, a pressure transmitter, a GPRS wireless transmission module, a mobile phone client APP, and a coding speed detection module. The microprocessor controller module and the frequency converter form a pressure PID controller to indirectly control the constant nozzle inlet pressure by controlling the pressure of the incoming pressure of the hose reel irrigator. The microprocessor controller module and the matching motor controller with brushless DC motor form a speed PID controller to directly control the reel back speed of the PE pipe. The GPRS wireless transmission module interactively communicates the nozzle inlet pressure, the reel back speed of the PE pipe and the mobile phone client APP through the short message mode. After setting the corresponding parameters, the system realizes the automatic adjustment of the working conditions, improves the uniformity of the sprinkler irrigation operation of the hose reel irrigator, and realizes the remote real-time and precise monitoring of the working conditions of the hose reel irrigator, which provides a front-end guarantee for the intelligent irrigation of the irrigator.

A novel and useful acknowledgement and adaptive frequency hopping mechanism for use in wireless communication systems such as IO-Link Wireless. One or two additional acknowledgement bits are added to packet transmissions. One is a current acknowledgment bit which indicates whether a packet was successfully received anytime during the current cycle. The second bit is a previous acknowledgment bit which indicates whether packets were received successfully anytime during the previous cycle. An adaptive hopping table is constructed using a greedy algorithm which chooses frequencies with the best PER for transmission of higher priority packets, while equalizing the PER products across cycles. A last resort frequency mechanism further improves transmission success by switching to a better performing channel for the last subcycle when previous attempts to transmit a high priority packet have failed.

A sensor network comprising a controller and a plurality of sensor devices configured to be distributed about an area and to communicate via a wireless communication link with the controller. Each sensor device is arranged to sense a parameter and to provide to the controller, via the wireless communication link, sensor data indicating a sensed parameter value and each sensor device is configured to report the sensor data to the controller according to a reporting condition associated with the each sensor device. The controller is configured to obtain location data indicating the location of each of the plurality of sensor devices and obtain said sensor data from each of the plurality of sensor devices to determine a reporting command for a selected sensor device based on the obtained sensor data and the corresponding location data; and to provide the reporting command to the selected sensor device to update the reporting condition associated with the selected sensor device.

A method comprises obtaining device information associated with one or more computing devices, the device information comprises at least a location of each of the one or more computing devices. Based on the device information, one or more UWCFs corresponding to the one or more computing devices are adapted such that a UWCF is a sub-area of an open zone, where the open zone is an area having reflection characteristics below a reference reflection threshold. A charging rate for each of the one or more computing devices based on the one or more UWCFs is determined. A beamformed signal is then transmitted within corresponding UWCF of each of the one or more computing devices based on corresponding charging rate for wirelessly charging the one or more computing devices.

Exemplary embodiments are provided of wireless emergency stop systems. In an exemplary embodiment, a wireless emergency stop system includes a machine safety device wired to a machine stop circuit for stopping operation of a machine when the machine stop circuit is activated. The machine safety device includes a wireless communication interface. The system also includes multiple personal safety devices. Each personal safety device includes a wireless communication interface for wireless communication with the machine safety device, and an emergency stop switch. The emergency stop switch is configured to, when activated, transmit an emergency stop signal to the machine safety device to trigger an emergency stop of the machine. The machine safety device is configured to maintain wireless connections with more than one of the multiple personal safety devices at the same time. Example methods of operating a wireless emergency stop system are also disclosed.

Method and an arrangement for monitoring status of a production device configured to implement an industrial process or industrial production with a control device with sensors and actuators, where at least one further sensor is carried through the production device with a product being processed by the production device, where further signals are wirelessly transmitted to a status-monitoring device by the further sensor, and where the signals and/or status information items and the further signals are placeable in relationship with one another to generate status information item about the production device such that it is possible to plan the status monitoring separately from the production device, and possible to combine information items of the industrial control device with the information items and data of a mobile sensor (further sensor) that passes through the production device, such that more precise status information items about the production device status can be acquired.

Systems, apparatuses, and methods are provided herein related to irrigation control systems. In some embodiments, an irrigation control system includes a router, an access point, and irrigation controller, a wireless adapter, and a mobile device. The mobile device can communicate with the wireless adapter in a direct communication mode in which the wireless adapter creates a wireless network, a first indirect communication mode in which the mobile device and the wireless adapter communicate via the access point while the mobile device is within range of the access point, and a second indirect communication mode in which the mobile device and the wireless adapter communicate via the access point while the mobile device is out of range of the access point.

A node for wirelessly controlling devices of a collaborative device group in an industrial infrastructure. The node includes: an inspection unit configured to identify a packet data flow of packet data to be transmitted by the node to one of the devices of the collaborative device group to control the corresponding, respective device; and a scheduling unit coupled to the inspection unit. The scheduling unit is configured to schedule transmission of the packet data to the corresponding, respective device based on the identification, by the inspection unit, of the packet data flow.

A novel and useful acknowledgement and adaptive frequency hopping mechanism for use in wireless communication systems such as IO-Link Wireless. One or two additional acknowledgement bits are added to packet transmissions. One is a current acknowledgment bit which indicates whether a packet was successfully received anytime during the current cycle. The second bit is a previous acknowledgment bit which indicates whether packets were received successfully anytime during the previous cycle. An adaptive hopping table is constructed using a greedy algorithm which chooses frequencies with the best PER for transmission of higher priority packets, while equalizing the PER products across cycles. A last resort frequency mechanism further improves transmission success by switching to a better performing channel for the last subcycle when previous attempts to transmit a high priority packet have failed.