33results about How to "Reduce layout complexity" patented technology

The invention puts forward a positioning method and a positioning system based on signal emitting device antenna direction correction. The positioning method comprises the following steps: S1, processing a signal emitted by a signal emitting device to a to-be-positioned point into basic positioning information; S2, calculating out the preliminary positioning location of the to-be-positioned point using a signal attenuation calculation model and a positioning algorithm based on a propagation model; S3, acquiring the attenuation characteristic of the signal emitting device through measurement, wherein the attenuation characteristic includes a plurality of pieces of constant-amplitude attenuation information, and each piece of constant-amplitude attenuation information records the propagation characteristic relation between angle and distance under the same attenuation signal intensity; and S4, correcting the preliminary positioning location according to the attenuation characteristic to realize accurate positioning. According to the invention, the directivity of a signal source propagation antenna is taken into full consideration, and the existing positioning result is corrected using a measured antenna radiation signal attenuation model instead of an ideal attenuation model, which greatly improves the positioning accuracy. The positioning method and the positioning system are especially suitable for indoor Wi-Fi positioning, and have a broad market application prospect.

The invention relates to a vehicle-mounted battery charger which comprises a charger module used for charging a battery system. The vehicle-mounted battery charger further comprises a heat transfer plate and a heater. The heat transfer plate is in series connection with a heating cycle loop of the battery system. The heater is connected with an output end of the charger module. The charger module or the battery system supplies a power source to the heater through the output end. A flow channel is contained in the heat transfer plate and the heat transfer plate is connected with the heater. The heat transfer plate exchanges heat generated by the heater with refrigerant fluid in the heating cycle loop through the flow channel. According to the technical scheme, a high-voltage liquid heater need not be independently installed, the cost of an overall vehicle is reduced and the arrangement complexity of the overall vehicle is reduced. The invention further provides a battery liquid cooling system which reduces the system cost and decreases the system structure. The invention further provides the electric vehicle. The overall vehicle is lower in cost and smaller in arrangement complexity.

The invention provides refrigerating equipment (1). A storage chamber located on the same layer of a box-shaped liner (10) is at least divided into a first storage chamber body (101) and a second storage chamber body (102). A vacuumizing cavity (11) can be formed in the first storage chamber body (101). In this way, the second storage chamber body (102) serves as a non-vacuum storage chamber body and can serve as a moisturizing storage chamber body and the like according to requirements, and various types of storage chamber bodies are provided for a user to select. In addition, the vacuum cavity (11) needs to be vacuumized through a vacuum pump (12). The vacuum pump (12) can be located inside or outside the first storage chamber body (101). An exhaust pipe (13) and/or a wire cable connected with the vacuum pump (12) can stretch out by means of the wall of the second storage chamber body (102), and the situation that pipelines and wires penetrate through the rear wall of the first storage chamber body (101) is avoided. In this way, the assembling difficulty is lowered, and the height limitation, caused by pipeline installation, of a vacuum storage unit in the first storage chamber body (101) can be eliminated.

The invention relates to a fuel cell system and a shutdown purging method thereof. The system comprises a galvanic pile, an air supply subsystem connected with a cathode of the galvanic pile, a hydrogen supply subsystem connected with an anode of the galvanic pile, a cooling circulation subsystem connected with the galvanic pile, a hydrogen/air mixing box respectively connected with the air supply subsystem and the hydrogen supply subsystem and a controller used for controlling the subsystems. The output end of the galvanic pile is connected with the driving motor by being connected with the DC/DC converter, and after the controller receives a shutdown command, in the fuel cell system shutdown process, the controller controls the temperature of the galvanic pile according to the cooling circulation subsystem and controls the actuator to correspondingly purge the interior of the galvanic pile. The method has the advantages of improving the cold start capability of the fuel cell galvanic pile at low temperature, effectively prolonging the service life of the fuel cell galvanic pile and the like.

The invention discloses two WIFI device positioning methods applicable to a small region. According to the two methods, it is assumed that the small region comprises three WIFI base stations which are located at three vertexes of a regular triangle; and a rectangular coordinate system is established by taking a straight line on which the base of the regular triangle is located as an X axis, the straight line passing through one vertex and the middle point of the base as an Y axis and the intersection point of the two straight lines as an origin. A first method is that WIFI devices in the region initiate positioning actively, so that a user holding a WIFI device can obtain the map of the region from the WIFI base stations, and therefore, the user can know the information of the surrounding region and can find out a required place easily. A second method is that the WIFI base stations initiate positioning actively, and the base stations position the WIFI device in the region actively. The methods are more suitable for performing active positioning by the WIFI devices and actively positioning the devices by the base stations in the small region, the layout complexity of the user base stations is reduced, the positioning speed is fast, the positioning is simple, and the accuracy is high.

The invention discloses a multifunctional heating floor lamp with an adjustable height. The multifunctional heating floor lamp comprises a base, a slide rail arranged on the base, a bottom column arranged in the slide rail through a slide structure, a gooseneck pipe with one end fixed to the upper end of bottom column and the other end provided with a lamp holder, a lampshade arranged at the upperside of the gooseneck pipe, height adjustment tooth lines arranged on the outer surface of the bottom column, and a support plate arranged at the middle position of the height adjustment tooth linesthrough a rotary buckle, provided with a control button and having a heating function. The invention provides a multifunctional heating floor lamp with an adjustable height. The practicability and flexibility of the floor lamp can be further improved, the space conflict between the floor lamp and other products is reduced, and the use effect of the product is greatly improved, so that consumers can better accept the product.

The invention provides an integrated structure of a drive controller and a direct current converter. The integrated structure comprises a drive controller shell, an upper cover plate, a direct current converter shell and a lower cover plate, wherein the direct current converter shell is fastened with the drive controller shell in a vertical direction, the bottom wall of the drive controller shell is provided with an upper surface and a lower surface, the upper surface is provided with a first grooved water channel which is provided with a water inlet and a backwater inlet, the first water channel is covered with a heating module in the drive controller, the lower surface is provided with a second grooved water channel, the second water channel is covered with the direct current converter shell, the water inlet and backwater inlet of the first water channel are communicated with the second water channel to enable all or part of the cooling liquid flowing in the second water channel to enter into the first water channel through the water inlet and flow back into the second water channel through the backwater inlet. The integrated structure of the driving controller and the direct current converter has the advantages of higher integration level and better cooling effect.

The invention discloses a source driver, which comprises a receiver and a channel. The receiver is used for receiving a digital signal at an input node so as to generate a received signal at an output node, and comprises a first switch, a second switch and a voltage-limiting circuit, wherein the first switch selectively connects the output node of the receiver to first reference voltage based on the digital signal; the second switch connects the output node of the receiver to second reference voltage based on the digital signal; the voltage-limiting circuit is coupled between the input node and the output node of the receiver and is used for limiting the voltage level of the input node of the receiver; and the channel generates driving voltage based on the received signal.

The invention relates to a reversible fuel cell, in particular to an integrated reversible fuel cell energy system which comprises an integrated reversible fuel cell subsystem, a lithium battery auxiliary starting subsystem, a solar electrolysis energy supply subsystem and a hydrogen storage subsystem. The integrated reversible fuel cell subsystem consists of an integrated reversible fuel cell stack, a hydrogen circulation subsystem, an air circulation subsystem, a cooling water circulation subsystem and an electrolyzed water circulation subsystem; and the system comprises a power generation mode and an electrolysis mode. Compared with the prior art, cyclic utilization of hydrogen is realized, and hydrogen can be efficiently utilized, produced and stored through cooperation of the integrated reversible fuel cell subsystem, the lithium battery auxiliary starting subsystem and the solar electrolysis energy supply subsystem, so that the endurance time of the system is prolonged, and the energy utilization efficiency of the system is improved.

The invention provides a system for extracting vibration characteristic parameters based on distributed laser radars. The system is a single-transmitter multi-receiver type multi-station distributed detection system, and comprises a main transmitting laser radar and a plurality of receiving laser radars. The receiving laser radars are coplanar with the main transmitting laser radar, and the main transmitting laser radar is located in the center of the plane.

The invention discloses a transmission positioning structure and a water outlet device. The transmission positioning structure comprises a base, a rotating piece and a sliding piece. The rotating piece is rotationally connected to the base, the sliding piece comprises a sliding rod arranged on the base in a rotation stopping and sliding mode and a sliding block arranged on the sliding rod, and the sliding block is matched with the inclined face of the rotating piece and is further provided with a fixing part and an elastic part. A positioning groove is formed in the matching face, matched with the sliding block, of the rotating piece, and the elastic part of the sliding block is configured to be suitable for being matched with the positioning groove in an abutting mode. According to the water outlet device, the transmission positioning structure is adopted, and the elastic part is matched with the positioning groove so that the sliding block can be used as a transmission component and can also be used as a component for providing the gear sense, the complexity of the whole structure is lowered, and the manufacturing and maintenance cost is reduced.

The present invention provides a display substrate and a display device. The display substrate includes: a backplane and a plurality of pixel units; the pixel units include white LEDs; a collimating lens for collimating white light beams; A prism layer for reflecting monochromatic light of different colors in the first direction and a second direction; a transmittance controller for modulating the transmittance of monochromatic light of different colors; A scattering layer that scatters monochromatic light. In this application, the white light beam is reflected by the prism layer to obtain monochromatic light of different colors in the first direction and the second direction, and the monochromatic light of different colors is modulated by the transmittance controller to generate the corresponding pixel unit Color, realizes the double-sided display of the Micro-LED display, increases the functionality and interest of the display, and reduces the huge transfer workload of the Micro-LED display and the complexity of the display circuit layout.

The invention discloses a multifunctional indoor brightening system. The system comprises a base, a sliding rail arranged on the base, a bottom column arranged in the sliding rail through a sliding structure, a gooseneck pipe with one end fixed to the upper end of the bottom column and the other end provided with a lamp holder, a lampshade arranged on the upper side of the gooseneck pipe, a heightening tooth pattern arranged on the outer surface of the bottom column, and a supporting plate arranged in the middle of the heightening tooth pattern by a rotary buckle, provided with a control button and having a heating function; and a multifunctional illumination circuit is further arranged in the base. According to the multifunctional indoor brightening system, the practicability and flexibility of a floor lamp can be further improved; the space conflicts between the floor lamp and other products are reduced; the using effect of a product is greatly improved; and a consumer can better accept the product.