7 results about "Beacon" patented technology

The invention discloses a ship navigation state monitoring and alarming system comprising modules such as a direction finder for determining the real-time direction information of a ship by signal communicating with a beacon station on the shore base; an anemometer for detecting wind speed information of the sea surface during the navigation of the ship; and a water temperature observer for detecting temperature information of seawater under different water depths, wherein the system further comprises an analysis module for receiving data information transmitted by the direction finder, the anemometer, the water temperature observer, the barometer, the Beidou positioning module and the angle acquisition module; the analysis module is provided with a roll angle threshold and a standard parameter in a safe navigation state of the ship; and the data analysis module compares the received data information with the internally stored standard parameters to determine whether the ship is sailing in a safe state, feeds back the state parameters under safe navigation to the shore-based command center if so, otherwise sends an alarm signal, and transmits the alarm signal to the shore-based command center.

A system includes a plurality of line cards and a timing card. A clock generation circuit on the timing card generates a clock signal which is pulse width modulated according to information to be transmitted. A clock line supplies the pulse width modulated clock signal to the line cards. The timing card sends a first control word to the plurality of line cards over the clock line after sending a beacon. The first control word includes a size field specifying a first length of first data following the first control word. The timing card sends time of day information over the clock line to the line cards following the first control word. The time of day information may be encrypted. A second control word follows the time of day information. One or more additional control words can follow the second control word before the next beacon.

The invention discloses a method for measuring loss of a large-scale double-reflector antenna. The method comprises the following steps: firstly, measuring the power gain of the large-scale double-reflector antenna by using a radio power source method; then measuring antenna orientation and pitching power directional diagrams in a limited angular domain by using a beacon of a geosynchronous orbit stationary satellite, and calculating directional gain of the antenna by using a numerical integration method; and finally, calculating the loss of the large-scale double-reflector antenna according to the measured antenna power gain and directional gain and considering antenna irradiation loss correction, support shielding correction, axial cross polarization loss correction and mismatch correction. The method is simple and feasible, and has popularization and application values.

The invention discloses a tunnel deformation real-time monitoring system and monitoring method. The system comprises a deformation monitoring module, a data transmission module, a data analysis module and an alarm module, the deformation monitoring module comprises a plurality of monitoring units, each monitoring unit is erected on a cross section of a tunnel, the adjacent monitoring units are spaced by a preset distance, and each monitoring unit comprises a radar, a vault beacon, a side wall beacon and an arch foot beacon; wherein the radar is located at the position, away from the ground by a preset height, on the side wall of the tunnel; the vault beacon is positioned right above the vault of the tunnel; the side wall beacon is located on the other side wall of the tunnel; the arch springing beacons are located below the side wall beacons and are close to the arch springing of the tunnel; the vault beacons, the side wall beacons and the arch foot beacons are all-directional beacons. The tunnel deformation quantity can be monitored in real time under the condition that construction continuity is not affected.

The invention relates to the field of optical detection equipment, in particular to multiband beacon optical detection equipment. The detection equipment comprises a signal light channel, a fine aiming mirror arranged in the signal light channel, a first beam splitter, a second beam splitter, a first detection device, a second detection device and a communication assembly, capturing and tracking of wide-beam signal light are achieved through a first detection device, and after being reflected by a fine aiming mirror, a first light splitting piece and a first light filter, an externally-transmitted beacon light beam is focused to a first detector through a first lens set to be imaged; narrow-beam signal light is captured and tracked through a second detection device, and an external signal light beam is reflected by a fine aiming mirror, transmitted by a first light splitting piece and transmitted by a second light splitting piece and then is focused to a second detector through a third lens group to be imaged. And capturing and tracking of multi-band signal light are realized. When the narrow-beam signal light is captured and tracked, a wide-beam signal light path of a transmitting end and a detection receiving end path are closed, so that the power consumption is effectively reduced.

The invention relates to a method and device for searching a terminal, a storage medium and electronic equipment. The method comprises the following steps: sending a beacon request message; under the condition that a target terminal receives the beacon request message, receiving a beacon signal broadcasted by the target terminal according to the beacon request message; and after the beacon signal broadcasted by the target terminal is received, determining the position of the target terminal according to the beacon signal.