38results about How to "Reduce external radiation" patented technology

The embodiment of the invention discloses a wireless power supply method and device for high-voltage on-line monitoring equipment. With the method and device, a problem of low power supply reliability of the wireless power supply method of the existing high-voltage on-line monitoring equipment and problems of a power supply distance, power and efficiency, power supply stability and reliability, and power supply cost can be solved. The method comprises: step one, an energy-taking coil takes energy out from a high-voltage bus in an electro-magnetic induction manner and AC/DC and DC/AC voltage conversion is carried out to convert 50-Hz alternating currents into high-frequency alternating currents; step two, a transmitting coil disperses the energy of the high-frequency alternating currents to the surrounding space and thus a high-frequency electromagnetic field is formed in the space, targeted transmission of the energy is carried out by using a domino relay coil, and a receiving terminal receives the energy; and step three, after the receiving terminal receives the energy, power conversion processing is carried out and then the converted power is provided for a storage battery and a load.

The invention provides a vehicle control method, device and system and a vehicle. According to the vehicle control method and device, firstly, a working state signal of an engine is firstly received, and whether the engine is in a working state or not is judged; if the engine is in the working state, a control signal for detecting the state of a vehicle door is transmitted; a state signal of the vehicle door is received, and whether the vehicle door is opened or not is judged; if the vehicle door is opened, a control signal for detecting the position of an electronic key is transmitted; a position detection result signal of the electronic key is received, and the distance between the electronic key and the vehicle is obtained; when the distance between the electronic key and the vehicle exceeds a preset distance, a control signal for controlling the engine to stop working is transmitted. Even when a driver forgets to shut down the vehicle when leaving the vehicle, the engine can automatically stop working after the driver is away from the vehicle, the threat of toxic gas such as carbon monoxide generated by running of the engine to health is avoided, and potential safety hazards are eliminated.

The invention discloses dimming glass based on solar energy and dimming liquid crystal. The dimming glass is characterized by mainly comprising double transmitting glass surface layers (1), a liquid crystal sheet (4) and a film solar battery (3), wherein the inner surfaces of the double transmitting glass surface layers (1) are respectively bonded with an ethylene-vinyl acetate (EVA) adhesive layer (2); the film solar battery (3) with a frame structure is clamped between two EVA adhesive layers (2) and arranged along the peripheries of the transmitting glass surface layers (1); the liquid crystal sheet (4) is also clamped between the two EVA adhesive layers (2) and is positioned in the frame of the film solar battery (3); the film solar battery (3) is connected with the input end of a storage battery through a control circuit; the output end of the storage battery (6) is electrically connected with the liquid crystal sheet (4); and a dimming resistor (5) is connected in series in a connecting circuit of the storage battery (6) and the liquid crystal sheet (4). The dimming glass has the advantages of adjustable light, energy conservation, environmental friendliness, high strength and low cost.

The invention provides a composite sheet synthesis block used for manufacturing superhard material sintered bodies like polycrystalline diamond composite sheets. The composite sheet synthesis block comprises: a pressure-transmission and heat-preservation body, which is equipped with a synthesis cavity; an isolation body which is arranged in the synthesis cavity and comprises an isolation pipe andtwo isolation sheets arranged at openings at two ends of the isolation pipe in a sealing mode, wherein a cavity used for accommodating a composite body is formed in the isolation body, and the outer surfaces of the isolation sheets are flush with the end surface of the isolation pipe; a first shielding pipe, a heating pipe and a second shielding pipe, which are sequentially arranged outside the isolation body; two groups of heat-resistant sheets, which are arranged at two ends of the isolation body respectively and make contact with the corresponding end surfaces of the isolation pipe, the first shielding pipe, the heating pipe and the second shielding pipe and the inner surface of the pressure-transmission and heat-preservation body respectively; and two groups of conductive structures, which are respectively arranged at the outer sides of two groups of heat-resistant sheets. The composite sheet synthesis block disclosed by the invention is uniform in heating; meanwhile, the yield ofthe manufactured composite sheets is high.

The invention discloses an automatic sensing control type modularized sun-shading system. The automatic sensing control type modularized sun-shading system comprises a constant voltage source module,a sun-shading window module group, a switch module group, a processor module and a sensing module, and the busbar voltage end of the constant voltage source module provides a stable busbar voltage tothe sun-shading window module group, the sun-shading window module group comprises a plurality of sun-shading window modules, and each sun-shading window module comprises a curly static film and a conducting layer; the switch module group comprises a plurality of electronic switches corresponding to the sun-shading window modules one to one, each sun-shading window module and each electronic switch are connected in series into a first access road, and all the first access roads are connected in parallel; and the sensing module comprises one or more sensors, and the processor module controls the electronic switches to be closed or disconnected according to detection results of the sensors. According to the automatic sensing control type modularized sun-shading system, a sun-shading window is automatically controlled to be opened or closed by using the sensing modules, the sun-shading window is automatically unfolded under the condition of detecting the need for sun shading, the sun-shading window is automatically put away under the condition of detecting no need for sun shading, and energy consumption is saved.

The invention discloses a low peak-to-average ratio orthogonal pulse modulation method based on a Legendre polynomial. The method comprises: orthogonal pulses used for modulating data adopting elliptic spherical wave function pulses with the same channel bandwidth, mutually aliasing frequency spectrums and orthogonal time domains; wherein the elliptic spherical wave function pulse is generated byadopting a Legendre polynomial weighted combination; discretizing the orthogonal pulses to form an orthogonal basis matrix; constructing a dimension reduction matrix of the orthogonal basis matrix, wherein the row number of the dimension reduction matrix is smaller than the column number; carrying out left multiplication operation on the orthogonal basis matrix and the dimension reduction matrix to realize dimension reduction processing; data information to be transmitted being subjected to serial-parallel conversion to form a multi-path parallel data group, the multi-path parallel data groupand the orthogonal basis matrix subjected to dimension reduction processing being subjected to left multiplication operation, completing data modulation, and forming a path of modulation signal through time domain signal superposition. According to the method, the practicability of the ellipsoidal wave function in the quadrature modulation technology is improved, and meanwhile, the peak-to-averageratio of multiple paths of quadrature modulation signals is inhibited.

The invention discloses a geomagnetic measurement method based on a split type suspended spherical coil. The method comprises the steps that a measurement system is installed; under the situation thatpower is not supplied to a compensating spherical coil, a tester host measures a geomagnetic total field through the compensating spherical coil; under the situation that power is supplied to the compensating spherical coil, a measured value is recorded as the geomagnetic horizontal component when reaching the minimum; the tester host supplies power to a bias spherical coil, the bias spherical coil applies a bias magnetic field in the east-west direction, and a resultant magnetic field of the bias magnetic field and geomagnetic total field is calculated to obtain a relative magnetic declination; other geomagnetic parameters are calculated by using the geomagnetic total field, the geomagnetic horizontal component and the relative magnetic declination. The structure of the split type suspended spherical coil adopted by the geomagnetic measurement method is very simple, a magnetic field generated inside the coil is more uniform, a magnetic field outside the coil attenuates more quickly,the external radiation is small, and the sampling frequency can be effectively improved.

The invention discloses a magnetic latching Internet of Things (IoT) switch with touch feeling. The switch comprises a fixing support, a key, a panel frame, a rear cover plate and a lead terminal embedded into the surface of the fixing support, and a magnetic control device and a touch control device installed in the fixing support. The magnetic control device is used for achieving automatic electrical control, and the touch control device is used for achieving manual operation. According to the switch provided by the invention, electric energy is acquired by the way of getting electricity viaa single wire, so that the modification and upgrade of the existing switch are facilitated. The touch control device of the switch provided by the invention can feel the action of the key during a manual operation process, and has the function of being capable of experiencing feedback touch feeling of the operation. A communication circuit is arranged in the switch, so that the switch can be connected with the Internet to be remotely controlled, and the switch is relatively high in communication reliability. The switch also has the function of being low in power consumption when in a standbystate; particularly the iron core drive circuit can achieve the effect of zero power consumption when in the standby state.

The embodiment of the present invention discloses an energy supply system for online monitoring equipment based on high-voltage transmission line jumper energy harvesting, which is used to solve the problem of reliable power supply in the prior art for the energy supply method of online monitoring equipment on high-voltage transmission lines Technical issues that are insufficient in performance and susceptible to random factors such as weather. The embodiment of the present invention includes: CT energy harvesting coil, power converter, transmitting coil resonator, receiving coil resonator, rectifier, rechargeable battery, online monitoring equipment; CT energy harvesting coil is set on the transmission line, CT energy harvesting coil and The power converter and the transmitting coil resonator are connected sequentially, and the transmitting coil resonator is fixed horizontally above the jumper sleeve of the transmission line; the receiving coil resonator is inductively connected with the transmitting coil resonator, and is used for receiving and transmitting coil resonator to transmit to the air High-frequency energy in the medium; the receiving coil resonator is also connected with the rectifier, rechargeable battery, and online monitoring equipment in sequence.

The invention discloses a connector of a telephone, which belongs to the electronic field and comprises a socket, a plug, a metal casing cover, a printed circuit board (PCB) and a tail cover. A patch three-terminal electromagnetic interference (EMI) filter is arranged on the PCB and used for filtering signals of the telephone. The socket is arranged in the metal casing cover and detachably connected with a telephone casing. The tail cover is connected with the plug, and an electric conduction contact face of the tail cover is detachably and electrically connected with the telephone casing. The tail cover leads a shielding layer of a handle shielded cable and the socket to form electrical connection and to be grounded through the telephone casing. When the plug is inserted into the socket,the plug and the socket are totally wrapped by the tail cover, the PCB and the metal casing cover. By arranging the patch three-terminal EMI filter, electromagnetic signal radiation leakage of the telephone is reduced, and the detachable metal casing cover and the detachable tail cover facilitate installation and maintenance.

The invention discloses an armored data cable for desert and a preparation method thereof, and relates to the technical field of data transmission cables. The armored data cable for the desert comprises a sheath structure and a cable core, wherein the sheath structure is cylindrical, and the interior of the sheath structure is provided with a hollow cavity; the sheath structure includes a first sheath layer, a steel tape armor, a second sheath layer, an aluminum tape armor and a third sheath layer; the steel tape armor is arranged on the inner side of the first sheath layer; the second sheathlayer is arranged on the inner side of the steel tape armor; the aluminum tape armor is arranged on the inner side of the second sheath layer; the third sheath layer is arranged on the inner side of the aluminum tape armor; and the cable core is arranged in the cavity. According to the invention, the two layers of armors are arranged in the sheath structure, so that the protection strength of thecable core is enhanced, and the risk of data transmission interruption caused by rat damage is reduced. Meanwhile, the three sheath layers are arranged inside and outside the two armors, and the sheath layers are made of insulating materials with low dielectric constants, so that the external radiation of the steel tape armors and the aluminum tape armors and the internal interference to the cablecore can be reduced.