55results about How to "Expand the scope of surveillance" patented technology

The invention discloses a large-scale battlefield situation smart sensing system, which comprises a wireless sensation network and a terminal receiving device. The wireless sensation network is formed by the self organization of wireless sensor nodes; each node comprises a processor module, a memory module, and a wireless communication module, and an integrated GPS module, an electronic compass module, a laser ranging module and a plurality of video acquisition modules. The wireless sensor nodes perform motion detection, target identification and classification through the video acquisition modules, then perform target ranging, determine the geographic coordinate information of the target and perform multi-hop propagation in the network. Each sensor works in cooperation to complete the sensation to the battlefield situation. The terminal receiving device collects the battlefield situation information in real time through the multi-hop wireless sensation network and converts the information into a two dimensional planar image for display. The invention has the advantages of large-scale multi-target detection, rapid deployment, real-time accurate information acquisition, strong anti-strike capability, multi-terminal access supporting and strong expandability, thereby having broad market prospects and application values in various military and civilian applications.

Provided is an intelligent reconnaissance optoelectronic system which can download the pictures of the needed area according users' needs without increasing the communication bandwidth. The system has the advantages of intelligentization, networking, and digitlization, and a camera subsystem, a camera processing subsystem, a transmission subsystem, and a display processing subsystem. A user can transfer the information of the needed area or target through the display processing subsystem to the camera processing subsystem through the transmission subsystem, the camera processing subsystem cuts or tracks the user interested area or target by software, the camera processing subsystem automatically locks the tracking target by means of inter-frame differential detection. The system can download the needed information according to the user's needs, so that the difficulty that the reconnaissance monitoring cannot acquire the key information in real time due to the limitation of transmission bandwidth.

The invention relates to a close range target updating cycle calculating method based on a secondary radar. The close range target updating cycle calculating method includes the first step of generating a remote area, an ordinarily close range area and an extremely close range area in a division mode, the second step of calculating the updating cycle of a target in real time according to the movement situation under the polar coordinates of the target when the target gets close to a secondary radar station and is located within the ordinarily close range area, the third step of converting target processing from a polar coordinate system to a rectangular coordinate system when the target continues to get close to the secondary radar station and is located within the extremely close range area and carrying out track updating and track smoothing on the target on the basis of the rectangular coordinates, the fourth step of calculating the real-time updating cycle of the target according to the track information generated in the third step, storing the updating cycle and finishing processing. By means of the close range target updating cycle calculating method based on the secondary radar, the real-time updating cycle of the target can be obtained, the detection position of the target in the next scanning process can be accurately predicted, the close range target can be tracked and monitored accurately, and false targets can be filtered out more accurately.

The invention provides a distributed monitoring system design method based on a wireless network. In the method, a monitoring system is composed of an optional number of video sensors, a ward mobile communication terminal and a guardian mobile communication terminal; the video sensors and the ward mobile communication terminal have the wireless local area network function, monitoring information of the video sensors is transmitted to the ward mobile communication terminal through a wireless local area network, and the ward mobile communication terminal transmits the monitoring information to the guardian mobile communication terminal through a commercial mobile communication network. The method solves technical problems in an existing monitoring system, and achieves the purposes that the monitoring range is wide, the transmission distance is long, erection is convenient and the cost is low.

The invention discloses an embedded large vehicle parking assisting system and a control circuit thereof. The embedded large vehicle parking assisting system comprises a single-chip computer, an inputsystem, an output system and a signal acquisition system. The signal acquisition system is composed of seven ultrasonic sensors, two camera devices and a speed sensor. The bottom of a second groove is provided with a first electric telescopic rod, one side of a cleaning plate is provided with a plurality of cleaning brushes, one end of the supporting block is provided with cameras, and the otherend of the supporting block is fixedly connected with a second electric telescopic rod. According to the invention, the cameras are cleaned by setting the spring-driven cleaning plate and the cleaningbrushes, so that a driver can accurately identify the external environment through the cameras and safe parking is realized, the cameras with the first electric telescopic rod and the second electrictelescopic rod are arranged, front-back and left-right adjustment can be realized to expand the monitoring range of the cameras, the number of monitoring heads installed in the vehicle is reduced, and the ultrasonic sensors and the speed sensor are arranged and used for assisting the vehicle in parking together with the cameras.

The invention discloses a security and protection monitoring device. Lower supporting rod, the bottom of the lower supporting rod is fixedly connected with a base. The method is characterized in thatthe method is characterized by comprising the following steps; the middle of the left side of the lower supporting rod is fixedly connected with an electrical box. A box door is mounted on the left ofthe electrical box; a middle supporting rod is arranged above the lower supporting rod; a groove is formed in the top of the lower supporting rod, a first motor is fixedly connected to the bottom ofthe inner wall of the groove, a rotating rod at the top of the first motor is fixedly connected with the bottom of the middle supporting rod, a circle of dustproof pad is fixedly connected to the lower surface of the middle supporting rod, the bottom of the dustproof pad makes contact with the top of the lower supporting rod, and an upper supporting rod is arranged above the middle supporting rod.The insect repelling coating can repel mosquitoes, effectively prevent the mosquitoes from interfering with the camera, improve the working environment of the camera, ensure safe operation of monitoring to the maximum extent, and avoid reduction of the monitoring effect caused by mosquito attachment.

The invention discloses a practical landslide pre-warning system. The practical landslide pre-warning system comprises a master control unit and a plurality of landslide sensors, wherein the master control unit comprises a wireless receiving module, a microprocessor, a short message module, a storage module, an audible and visual alarm, a state indication module and a receiving antenna; the landslide sensors comprise mechanical dual-shaft dip angle detection modules, wireless emitting modules, antennas and batteries; the landslide sensors are vertical to the horizontal plane and are buried into different positions of sites on which landslide possibly occurs, can be respectively set with different dip angle thresholds and are in a power-off state at ordinary times; and the master control unit is mounted in a house of people close to a landslide site, or enterprise and public institutions or other place in which power can be continuously supplied. The practical landslide pre-warning system has the advantages that the power supply problem of the landslide sensors is solved; the landslide sensors are simple in internal structure, supplied with power through dry batteries, small in volume and low in cost and can be used massively; and the landslide sensors can be buried into multiple positions at the same site, so that the landslide monitoring range is expanded, and the practicability is strong.