30results about How to "Reduce the number of laying" patented technology

The invention provides a plugging-connection charging type lifting transverse-moving stereo garage comprising a lifting transverse-moving stereo garage body, a plugging-connection charging device anda charging control box. The plugging-connection charging device comprises charging plugs and a charging gun; the charging plugs comprise the first charging plugs, the second charging plugs and the third charging plugs; the first charging plugs are mounted on a second-layer vehicle carrying plate upwards; the second charging plugs are mounted on a garage frame downwards; the third charging plugs are mounted on a first-layer vehicle carrying plate; when the second-layer vehicle carrying plate falls or rises, the first charging plugs and the second charging plugs are separated or make contact, and accordingly a second-layer charging circuit is switched off or switched on; the second charging plugs and the third charging plugs are connected with the charging control box, the charging control box is connected with an external power source, and the first-layer charging circuit is switched on all the time. The charging type lifting transverse-moving stereo garage is simple and reliable in structure, the laying length and the laying number of cables are decreased while charging parking places are expanded, the charging cost is reduced, and an existing charging type lifting transverse-moving stereo garage is improved.

The present invention relates to a transmission system using MIMO signals bidirectionally fed into a leaky cable, comprising a radio frequency unit, at least one bidirectional leaky cable, a first three-port circulator, a matching load, a radio frequency electro-optic converter, an optical fiber, a radio frequency photoelectric converter, a delay compensation module and a second three-port circulator. The dual-channel signals output by the radio frequency unit are respectively fed into the leakage cable from both ends. A circulator is added to both ends of the leaky cable to ensure the unidirectional flow of the bidirectional feed signal, and the orthogonality of the MIMO signal is ensured through the remote fiber and the delay compensation module. Multi-channel signal transmission is realized by expanding with dual-channel MIMO signals bidirectionally fed into the leaky cable structure. The system reduces the number of leaky cable transmissions in traditional multiple leaky cable MIMO signal transmission by half, without changing the transmitter architecture, and has high compatibility. It can be used in linear coverage communication scenarios and improve communication performance in linear coverage communication scenarios.

The invention discloses an RFID ground beacon based route fitting positioning method of a rail transit train. The method comprises the following steps: sending an EPC code to a read-write terminal of a vehicle-mounted ground beacon through a passive ground beacon; sending the EPC code to a computer of a ground monitoring center system of the rail transit train through a vehicle-mounted positioning system; searching a positioning database copy through the vehicle-mounted positioning system using the EPC code as an index; performing fitting positioning on adjacent ground beacons through the vehicle-mounted positioning system based on the route fitting parameters provided by the positioning database; searching the positioning database through the rail transit train ground monitoring center system using the EPC code as the index; and then performing fitting positioning on adjacent ground beacons through the rail transit train ground monitoring center system according to the route fitting parameters provided by the positioning database. With the adoption of the method, the hardware structure and algorithm of an existing train track reckoning system are simplified; the quantity of paved ground beacons is decreased. Therefore, the positioning accuracy is improved, and as a result, the system reliability is improved.

The invention provides a light self-insulation prefabricated slab system for grid roofs. The system is characterized in that purlins are unidirectionally (along the length or width direction of the building) arranged on the top chord of a grid; a constant-size light self-insulation prefabricated slab is covered between two adjacent purlins and is vertical to the purlins; the spacing between the two adjacent purlins is matched with the length of the constant-size light self-insulation prefabricated slab; one end of the constant-size light self-insulation prefabricated slab is fixedly put on one purlin and the other end thereof is fixedly put on the adjacent purlin; gaps are reserved between the constant-size light self-insulation prefabricated slabs which are put on the same purlin, are arranged in the direction vertical to the purlins and are arranged oppositely; and the adjacent constant-size light self-insulation prefabricated slabs are butted with each other in parallel in the direction parallel to the purlins. The system is convenient to transport and maintain, is quick to construct, is suitable for roofs or wall surfaces with complex load conditions, and has strong wind resistance and high reliability, thus improving the rigidity of the whole roof system.

The invention relates to a rail transit wireless MIMO communication transmission system of signal bi-directional feed-in leakage cable, and includes a first far-end radio frequency unit, a second far-end radio frequency unit, a first multi-port combiner, a second multi-port combiner, a radio frequency electro-optical converter, an optical fiber, a radio frequency photoelectric converter, a time delay compensation module, a third multi-port combiner, a fourth multi-port combiner, single bi-directional leakage cables, at least one first redundant backup far-end radio frequency unit, and at least one second redundant backup far-end radio frequency unit. The system is applied to rail transit communication to realize multithread signal transmission, can reduce half of the laying number of leakage cables, and has efficient MIMO performance, engineering cost is greatly reduced, and construction and maintenance are simplified. The rail transit wireless MIMO communication transmission system satisfies a requirement of uplink and downlink communication, is suitable for frequency division duplex and time division duplex communication, can be used for MIMO signal coverage of a rail transit communication system, and supports a situation of multi-frequency redundancy networking.

The invention discloses a grinding and repairing device for inner and outer walls of home decorations, relates to the technical field of grinding equipment, and solves the problem that the existing grinding and repairing equipment lacks certain linkage, and the grinding process of the inner and outer walls of home decorations is usually carried out separately. A device for grinding and refurbishing inner and outer walls for home furnishing, including a frame body. The frame body includes: a support frame, two support frames are arranged on the top of the frame body; a push-pull cylinder, and the push-pull cylinder is arranged in the middle of the top of the two support frames place; the top of the frame body is provided with a positioning frame; the inner side of the frame body is provided with two sets of chute, and the inside of the two sets of chute is equipped with a slide bar through a spring; one set of the support frame There is a linkage slide block installed on both sides. The present invention simultaneously grinds and refurbishes eight inner and outer walls of the box-shaped ornament by grinding the sleeve plate and the inner grinding frame, which is more time-saving and labor-saving than grinding the inner and outer walls of the ornament alone.

The invention discloses a serial distributed analog quantity airborne acquisition system, which comprises an integrated control host, a bus controller and a bus interface module, wherein the integrated control host is formed by a high-performance workstation and is in communication with the bus controller through a switch; the bus controller realizes convergence and basic data processing of acquisition information of the bus interface module, and completes switch transmission and time synchronization of data through the switch; different types of sensors are additionally arranged on the bus interface module, so that signal conditioning and data acquisition of various parameters are achieved. According to the system, signal conditioning units are installed near the sensors based on an RS485bus technology, each signal conditioning unit is connected to the acquisition system through a wire, so that the cable laying number of the whole system is greatly reduced, the reliability of the system is improved, the system is suitable for being installed and tested in a narrow space, and the problems of too much testing cables, large refitting workload, complex penetrating coordination and the like of a large-scale civil aircraft are effectively solved.