31results about How to "With remote communication function" patented technology

The invention relates to the technical field of online monitoring of arresters and especially relates to an online monitoring device of an integrated lightning arrester. The invention specifically provides the monitoring device and a measurement method of the lightning arrester. The device and method integrate a mechanical lightning arrester monitoring device and an electronic lightning arrester online monitoring device aiming at a gapless metallic oxide lightning arrester. The online monitoring device of the integrated lightning arrester provided by the invention is composed through in-series connection of the mechanical lightning arrester monitoring device and the electronic lightning arrester online monitoring device, wherein after the in-series connection, the overall device is connected to a resistor disc in parallel. The device has the advantages that a total current, a resistive current, a quantity of action times, action occurrence time and other parameters of the lightning arrester can be monitored online; and the device is also equipped with functions such as display of a local mechanical ampere meter and a counting meter, remote communications and local data storage. The device increases data measurement accuracy, carries out remote transmission of data, enables repair workers to carry out on-site repair, maintenance and installation conveniently, satisfies development requirements of an intelligent substation, provides a new method for the online monitoring of an insulation state of the lightning arrester, is applicable to the online monitoring of the lightning arresters with various voltage grades and has wide application prospect.

The invention provides an intelligent reclosing controller, which comprises a central processing unit, a power module, a drive module, voltage transformers arranged at two ends of a switch respectively and three-phase current transformers connected on the switch in series. The voltage transformers and the three-phase current transformers are connected with a sampling channel in the central processing unit through a signal amplification and filtering module, the voltage transformers and the three-phase current transformers are further connected with the central processing unit through a metering circuit module, and the power module and the drive module are both connected with the central processing unit. The intelligent reclosing controller can obtain current power grid states and perform automatic reclosing and breaking intelligently and has high reliability.

The system includes outdoor part and indoor part. The indoor part includes units: audio / video encoding unit in use for converting information of visitor and his or her voice transferred from outdoor to video / audio data of visitor; communication unit in use for accessing network, and establishing communication link to user terminal, and carrying out interaction of video / audio data for the user terminal. The outdoor part is in use for acquiring voice and video of the visitor to help the indoor part to implement networked terminal of doorbell function. The doorbell system possesses remote communication function; or video / audio information of visitor through wired or wireless network is sent to terminal on host. Thus, user will not miss chance to meet the visitor, or monitors larcener to protect home.

An underwater PNT system with wide-area coverage and autonomous monitoring, including: a surface section, a user section, an underwater section, and a shore-based control center; The space-time reference is transmitted to the underwater section and information interaction; the user section is equipped with user terminals; the underwater section is equipped with an underwater PNT network, and the user terminal uses the underwater PNT network for underwater positioning, navigation and timing; the underwater PNT network is Configured as a regional network composed of submarine base station links constructed by multiple submarine base stations, the underwater PNT network has autonomous monitoring through the submarine base station links; the shore-based control center is used to monitor the work of the surface section, user section and underwater section state, and process the acquired data. The underwater PNT system has integrity monitoring function, inter-base station link function and wide-area service capability, communication integration function and remote communication function, and can be adaptively corrected according to the environmental characteristics of the sea area.

The invention provides a control device of an outdoor high voltage alternating current vacuum breaker, comprising three current transformers connected to a three-phase line respectively, a digital-to-analog conversion module, a master controller, a power supply module, a drive module and a key input module, The three current transformers are connected with the master controller through the digital-to-analog conversion module,the key input module and the drive module are both connected with the master controller, and the power supply module is connected with the current transformers, the drive module and the master controller respectively. The control device of the outdoor high voltage alternating current vacuum breaker can judge whether the line has a three-phase imbalanced failure through detecting the current vector value of the three-phase line and compare the current vector and the protection value, so as to realize zero-sequence protection.