5 results about "General Packet Radio Service" patented technology

The invention relates to the field of distribution transformer room monitoring, in particular to non-electricity monitoring terminal equipment, non-electricity monitoring management equipment and a non-electricity monitoring device for a distribution transformer room. The monitoring terminal equipment comprises a noise sensor, a vibration sensor, a camera set, an environmental data acquisition board, a monitoring terminal host, a data storage unit and a wireless transmission unit, wherein the environmental data acquisition board is connected with the noise sensor and the vibration sensor; the monitoring terminal host is connected with the environmental data acquisition board and the camera set; the data storage unit is connected with the monitoring terminal host; and the wireless transmission unit is connected with the monitoring terminal host. According to the equipment and the device, non-electricity parameters in the distribution transformer room are detected and monitored; the monitoring terminal equipment processes data acquired by each sensor, and transmits the processed data to the monitoring management equipment in a general packet radio service/third-generation (GPRS/3G) way; the monitoring management equipment can give an alarm for discovered abnormal data; and staff can also analyze the data transmitted by the monitoring terminal equipment to judge whether a transformer is in a safety running state or not.

The invention discloses an electrostatic type lampblack purifier lampblack monitoring cleaning system and a monitoring cleaning method. The electrostatic type lampblack purifier lampblack monitoring cleaning system comprises a purifier data collector arranged on a power supply circuit of an electrostatic type lampblack purifier and a fan data collector arranged on a fan, an analog-digital conversion unit, an industrial personal computer and a background server, wherein the analog-digital conversion unit is used for changing a current signal collected by the purifier data collector and the fan data collector into a digital signal so as to be sent to the industrial personal computer; the industrial personal computer is provided with a GPRS (general packet radio service) data transmitter module, the background server is provided with a GPRS data sending-receiving module, so that the data of the industrial personal computer is transferred to the background server so as to carry out real-time monitoring. The invention also discloses a lampblack monitoring cleaning method of the electrostatic type lampblack purifier. The purifier data collector collets an I practical peak value and an I practical valley value in each interval setting time, and the industrial personal computer executes a sweeping task according to a setting algorithm.

The invention provides a method for moving seamlessly among different networks by a terminal user, a wireless local area network optimization gateway (WOG), a terminal, and a wireless local area network (WLAN) and cellular mobile network tight coupled system. The method comprises: a WOG receiving an access session notification message sent by a terminal, according to the access session notification message, obtaining the attribute information of a current session; and when the attribute information of the current session is cross-network switching access, the WOG selecting the same gateway general packet radio service (GPRS) support node (GGSN) for the current session. By adopting the method provided by the embodiments of the invention, the terminal can seamlessly move among multiple WLAN hot spots and 2/3G cellular internetworks conveniently, on-line data sessions are maintained uninterrupted, and the service experience of users is improved.