53results about How to "Avoid Signal Conflicts" patented technology

A system for determining a real-time location of a leaf node device, the system comprising at least one battery powered Bluetooth Low Energy (BLE) enabled leaf node device, wherein the at least one leaf node device is associated with a respective monitored asset and at least one beamforming reader node communicating with the at least one leaf node via BLE, the reader node creating a plurality of sectorized beams in a plurality of sectors and from the plurality of sectors At least one of the zones collects data related to the at least one leaf node device, wherein the location processing facility determines a real-time location of the at least one leaf node device based on the data collected by the beamforming reader nodes.

A communication method in a peer aware communication system and an apparatus for transmitting / receiving using the communication method are provided. A block signal for informing of channel occupation is generated and then is transmitted through an interval in which a message signal including a preamble signal is not transmitted. A subcarrier for the block signal is different from a subcarrier for the preamble signal.

The invention discloses a control circuit for multi-channel encoding and decoding integrated circuits working in parallel, so that the multi-channel encoding and decoding integrated circuits can form a multipoint-to-multipoint information transmission system. The control circuit is composed of a monostable flip-flop, a D flip-flop, an AND gate, an OR gate, an XNOR gate, a diode, a resistor, and a capacitor. It has the ability to limit the number of frames that a multi-channel encoding integrated circuit can send a serial code stream at a time; when one multi-channel encoding integrated circuit transmits a serial code stream, it shields the transmission of other multi-channel encoding integrated circuits; there are several multi-channel encoding integrated circuits When requesting to send at the same time, functions such as information can be sent in order according to the priority level. It makes the multi-point to multi-point information transmission system neither signal conflict nor lose the information that should be transmitted. The control circuit can be realized by a general digital circuit, or a semi-custom or full-custom ASIC can be prepared, or the control circuit can be integrated with a multi-channel coding integrated circuit.

The invention discloses a real-time temperature and humidity data collection system and method for an in-transit incubator of cold-chain logistics. The system comprises temperature and humidity inducing and recording incubator body equipment and hand-held terminal equipment, wherein the temperature and humidity inducing and recording incubator body equipment is arranged on the incubator and is internally provided with a temperature and humidity inducing module; the temperature and humidity inducing module comprises an MCU, a temperature and humidity sensor, a first sending and receiving module, a storage module, an RTC module and an RFID label. The temperature and humidity inducing and recording incubator body equipment supports a batch-type dormant data transmission mechanism and has the data compensating transmission function, and the hand-held terminal equipment polls temperature and humidity data of the monitored incubator body equipment periodically, records the received data and uploads the data periodically in bulk or uploads the whole data to a server after transportation is finished. Based on the characteristics of low power and low cost of 433-MHz radio frequency identification half-duplex wireless communications, the system and method reduce the cost of the incubator body equipment and data transmission consumption, prolong the use time of a battery of the incubator body equipment and reduce workloads for collecting data in bulk by logistics personnel.