31results about How to "Increase the frequency of sending" patented technology

The invention relates to an embedded Internet of things gateway-based agricultural greenhouse indoor environment monitoring system. The system is characterized in that the system includes a user end, a web server, an embedded type Internet of things gateway, a plurality of environmental parameter sensors, a plurality of execution devices, a database and a power supply device; the environmental parameter sensors are arranged in an agricultural greenhouse and are used for transmitting acquired environmental parameters in the agricultural greenhouse to the embedded type Internet of things gateway through a bus control local area network or a wireless local area network; the embedded type Internet of things gateway sends received environmental parameter data to the web server through the Internet or other satellite networks; the web server processes received data and sends control instructions to the embedded type Internet of things gateway; the embedded type Internet of things gateway sends the control instructions to the execution devices in the agricultural greenhouse through the wireless local area network or the bus control local area network, so that the execution devices can act; and the power supply device is used for supplying power for all electric devices.

A sensor system of a vehicle for locating an object located in the surroundings of the vehicle has at least one transmitting element, wherein the at least one transmitting element has a bandwidth with a transmitting frequency and the at least one transmitting element is designed for transmitting ultrasonic signals at the transmission frequency, and the sensor system has at least one receiving element which is functionally separated from the at least one transmitting element, wherein the at least one receiving element has a bandwidth, the The bandwidth has a center frequency and the at least one receiving element is configured to receive ultrasonic signals which are reflected at objects surrounding the vehicle, characterized in that the bandwidth of the receiving element is greater than that of the transmitting element bandwidth.

The invention discloses a data center network transmission control method system and a readable storage medium based on an anti-ECN mark. The method includes: starting a new flow, sending a data packet to a receiving end through a switch at a sending end; Whether there is free bandwidth, and the final ECN mark of the current data packet is CE final Perform numerical encoding; the receiving end receives the data packet and generates a drive packet, and then marks the ECN of the current data packet as CE final Copy it to the driver packet and send it to the sender; the sender judges the numerical code of the ECN flag bit of the driver packet, and if the corresponding link has free bandwidth, then send at least two data packets; otherwise, send one data packet. The invention timely feeds back the information of low link utilization rate to the sending end, and the sending end can rapidly utilize idle bandwidth by appropriately increasing the number of sending packets, thereby improving the link utilization rate.

The invention discloses a soft system test method and system, the method comprises: a heartbeat sending side calculates the soft heartbeat sending frequency and overtime time according to loads of the sender and current link condition and informs a heartbeat receiver, the heartbeat receiver calculates the soft heartbeat sending frequency itself can burden according to the loads of receiver and current link condition, the heartbeat receiver compares the soft heartbeat sending frequency itself can burden with the heartbeat sending frequency calculated by the heartbeat sender, if the heartbeat sending frequency of the heartbeat sender is smaller than the calculated value by itself, then the heartbeat sender is informed to send the soft heartbeat according to the calculated sending frequency by the heartbeat sender, otherwise, the heartbeat sender is informed to send the soft heartbeat according to the calculated sending frequency by the heartbeat receiver; the system comprises a heartbeat sender and a heartbeat receiver. The invention achieves dynamically adjusting the sending frequency of the soft heartbeat according to the practical operation condition, and the system resources areadequately and reasonably utilized.

The invention discloses a double-antenna handover system in the GSM-R (global system for mobile communication for railway) network and a method thereof. The double-antenna handover system comprises a head antenna provided with user identification codes, a tail antenna provided with user identification codes and a controller used for controlling received signals and transmitted signals of the head antenna and the tail antenna and handover of functions. By channel adjusting and coordinate of the head antenna and the tail antenna, seamless handover in the GSM-R network is realized, communication quality in the high-speed environment is greatly improved, and for a single-antenna handover process, time for transmitting measuring reports is shortened, and transmission efficiency is high.