Abstract: Provided are a sound gathering device for voiceprint monitoring and a preparation method. The sound gathering device is a cone structure and includes a front end portion (1) and a rear end portion (2), the front end portion (1) is trumpet-shaped, an inner wall surface of the front end portion (1) is present a pattern array of a microstructure (3), and the microstructure (3) presenting the pattern array is formed through laser etching. A sound wave frequency monitored by the sound gathering device is 50 Hz˜10 kHz, and a sound wave enters the sound gathering device from an entrance of the front end portion (1), is reflected through the pattern array of the microstructure (3) on the inner wall surface of the front end portion (1), and is transmitted from an exit of the rear end portion (2), and a sound pressure of the exit of the rear end portion (2) is 4 times˜8 times a sound pressure of the entrance of the front end portion (1).

Abstract: Devices and associated methods for operating a dual-subscriber identity module (SIM) dual-standby (DSDS) user equipment device (UE) configured with a first SIM and a second SIM. The UE performs communications with a first cellular network using the first SIM and a first radio resource control (RRC) connection, and receives a request to perform a higher priority communication using the second SIM. In response to the request to perform the higher priority communication, the UE transmits a request to the first network to suspend the first RRC connection. After transmission of the request to suspend the first RRC connection, the UE receives a message from the first network to place the first RRC connection in an inactive state, and initiates a timer, wherein the timer is used to determine whether the first RRC connection remains in the inactive state or transitions to an idle state.

Abstract: A method and system for identifying a lane changing intention of a manually driven vehicle are disclosed. The method includes: preprocessing a preset vehicle trajectory data set; extracting vehicle traveling features and driving behavior features of a target vehicle; constructing a vehicle following and lane changing decision prediction model based on machine learning, and inputting the preprocessed vehicle trajectory data set into the prediction model for training; obtaining a speed, an acceleration and a vehicle head distance of the target vehicle according to the vehicle traveling features of the target vehicle, and obtaining a large vehicle feature value and a clustering feature value according to the driving behavior features of the target vehicle; and inputting the speed, the acceleration, the vehicle head distance, the large vehicle feature value and the clustering feature value into the trained prediction model to obtain a lane changing intention identification result of the target vehicle.

Abstract: Provided is a control method on electronic expansion valve in air conditioner comprises: obtaining a real-time running frequency of compressor, a real-time exhaust temperature and a real-time outdoor environment temperature as the compressor running; comparing the real-time running frequency of compressor with a first set frequency; if the real-time running frequency is greater than or equal to the first set frequency, obtaining an integral coefficient of the PID algorithm according to a first set rule; if the real-time running frequency is less than the first set frequency, obtaining an integral coefficient of the PID algorithm according to the comparison of the real-time outdoor environment temperature and the first set outdoor environment temperature and a second set rule, or according to the comparison of the real-time outdoor environment temperature and the first set outdoor environment temperature and a third set rule, wherein the selection is based on whether the air conditioner is working in cooling m

Abstract: Provided are a resin reservoir (1) for photocuring for use in a 3D printer and a 3D printer using the resin reservoir (1). The resin reservoir (1) comprises: a reservoir body (11) for accommodating a liquid photosensitive resin, at least one side wall of the reservoir body (11) being an optically-transmissive wall (111); a transverse guide element (12) disposed at the reservoir body (11); and a load-bearing element (13) disposed inside the reservoir body (11) and capable of moving transversely along the guide element (12), wherein a load-bearing surface of the load-bearing element (13) faces the optically-transmissive wall (111). The resin reservoir (1) and the 3D printer enable a printed object to be transversely formed at the load-bearing element (13) and kept immersed in the liquid photosensitive resin, and a buoyancy provided by the liquid photosensitive resin can substantially offset the weight of the printed object.

Abstract: A method for controlling the heating operation of an air conditioner.

Abstract: A bimorph meta fiber is formed through spinning of two antagonistic polymer melts, one of which contains pre-compounded optical nanostructures, into an eccentric sheath-core configuration or a side-by-side key-lock configuration. The bimorph meta fiber is capable of an adaptive regulation of the infrared radiation responsive to humidity level deviation from a comfort zone or perspiration level of the wearer of the garment fabricated from the meta fibers. The bimorph meta fibers are humidity/heat trained to attain dynamical environmentally responsive behavior to maintain the humidity/thermal comfort zone at various the humidity level fluctuations.

Abstract: A heating mode control method of an air conditioner, comprises: obtaining an indoor temperature and calculating the difference between the indoor temperature and an indoor target temperature to obtain an indoor temperature difference as air conditioner running at heating mode; performing a coil temperature control process as the indoor temperature difference in a set indoor temperature difference range, wherein the coil temperature control process including: obtaining an indoor coil temperature and controlling the frequency of the compressor according to the indoor coil temperature and a coil target temperature. The application of the method can achieve the purpose of improving the heating effect by increasing the outlet air temperature, thus improving the heating performance of an air-conditioner.

Abstract: A photocuring 3D printer includes: a resin tank including a tank body for containing a liquid photosensitive resin, at least one side wall of the tank body being an optically-transmissive wall; a transverse guide element arranged on the tank body; and a load-bearing element arranged inside the tank body and movable transversely along the guide element, a light source provided outside the optically-transmissive wall, and an LCD display unit having a same area as the optically-transmissive wall and covered at an outer side or an inner side of the optically-transmissive wall.

Abstract: A method for controlling the heating operation of an air conditioner.

Abstract: Provided is a control method for an electronic expansion valve in air conditioner comprises: obtaining a real-time running frequency of compressor, a real-time exhaust temperature and a real-time outdoor environment temperature as the compressor running; retrieving a target exhaust temperature according to the real-time running frequency in a preset relation in which each available target exhaust temperature is paired with a single real-time running frequency, wherein the target exhaust temperature retrieved being defined as a first target exhaust temperature; defining a sum of the first target exhaust temperature and a set compensation temperature as a second target exhaust temperature, wherein the set compensation temperature is determined by the real-time outdoor environment temperature; and performing a PID control on opening amount of the electronic expansion valve based on a deviation that is a difference between the real-time exhaust temperature and the second target exhaust temperature.

Abstract: An air conditioner heating mode control method includes: obtaining an indoor temperature and comparing the indoor temperature with a first indoor temperature threshold as an air conditioner running at the heating mode; performing a dual PID control process if the indoor temperature is less than or equal to the first indoor temperature threshold. The dual PID control process obtains an indoor temperature difference; performs a PID calculation according to the indoor temperature difference to obtain a first target frequency; obtains a coil temperature difference; performs a PID calculation according to the coil temperature difference to obtain a second target frequency; compares the first and second target frequencies; and performs a frequency control on the compressor in which the greater one between the first target frequency and the second target frequency is used as the target frequency. The present invention includes an air conditioner heating mode control device.

Abstract: Provided is a control method on electronic expansion valve in air conditioner, which comprises: obtaining a real-time running frequency of compressor, a real-time exhaust temperature and a real-time outdoor environment temperature as the compressor running; if the air conditioner working in cooling mode, using a first set rule or a second set rule to obtain an integral coefficient in which the selection is based on the comparison of the real-time outdoor environment temperature and a first set outdoor environment temperature; if the air conditioner working in heating mode, using a first set rule or a third set rule to obtain an integral coefficient in which the selection is based on the comparison of the real-time outdoor environment temperature and a second set outdoor environment temperature; performing a PID control on the electronic expansion valve by using an error of the difference between real-time exhaust temperature and a set target exhaust temperature.

Abstract: A resin tank applicable to a photocuring 3D printer includes: a tank body for containing a liquid photosensitive resin, at least one side wall of the tank body being an optically-transmissive wall; a transverse guide element arranged on the tank body; and a load-bearing element arranged inside the tank body and movable transversely along the guide element, wherein a load-bearing surface of the load-bearing element faces the optically-transmissive wall.

Abstract: An air conditioner heating mode control method includes: Step 11: obtaining an indoor temperature and comparing the indoor temperature with a first indoor temperature threshold as an air conditioner running at the heating mode; Step 12: performing a dual PID control process if the indoor temperature is less than or equal to the first indoor temperature threshold; wherein the dual PID control process including: calculating the difference between the indoor temperature and a set indoor target temperature to obtain a indoor temperature difference; performing a PID calculation according to the indoor temperature difference to obtain a first target frequency; obtaining a coil temperature of an indoor unit heat exchanger; calculating the temperature difference between the coil temperature and a coil target temperature to obtain a coil temperature difference; performing a PID calculation according to the coil temperature difference to obtain a second target frequency; comparing the first target frequency with the se

Abstract: A heating mode control method of an air conditioner, comprises: obtaining an indoor temperature and calculating the difference between the indoor temperature and an indoor target temperature to obtain an indoor temperature difference as air conditioner running at heating mode; performing a coil temperature control process as the indoor temperature difference in a set indoor temperature difference range, wherein the coil temperature control process including: obtaining an indoor coil temperature and controlling the frequency of the compressor according to the indoor coil temperature and a coil target temperature. The application of the method can achieve the purpose of improving the heating effect by increasing the outlet air temperature, thus improving the heating performance of an air-conditioner.

Abstract: An air conditioner control method includes: obtaining a current ambient temperature when the air conditioner is being powered on, and selecting a current operational parameter corresponding to the current ambient temperature from stored optimal operational parameters which are paired with historical ambient temperatures; performing a control process on the air conditioner according to the current operational parameter; wherein a one-to-one correspondence between the historical ambient temperatures and the optimal operational parameters obtained by a process including: obtaining a continuous running time since this start, how many times operational parameters being modified since this start and a ambient temperature since this start as receiving a power-off signal; obtaining an allowed modification times of operational parameters during the running duration, which corresponds to the continuous running time since this start, if the times of the operational parameters being modified obtained is not greater than

Abstract: Provided is a control method on electronic expansion valve in air conditioner comprises: obtaining a real-time running frequency of compressor, a real-time exhaust temperature and a real-time outdoor environment temperature as the compressor running; comparing the real-time running frequency of compressor with a first set frequency; if the real-time running frequency is greater than or equal to the first set frequency, obtaining an integral coefficient of the PID algorithm according to a first set rule; if the real-time running frequency is less than the first set frequency, obtaining an integral coefficient of the PID algorithm according to the comparison of the real-time outdoor environment temperature and the first set outdoor environment temperature and a second set rule, or according to the comparison of the real-time outdoor environment temperature and the first set outdoor environment temperature and a third set rule, wherein the selection is based on whether the air conditioner is working in cooling m

Abstract: Disclosed is a photo-curing 3D printer comprising a storage unit for accommodating liquid photosensitive resin and a light source disposed underneath the storage unit. Wavelength of light rays emitted by the light source is 420˜460 nm. A bottom of the storage unit is configured to display a pattern composed of a shielding area for shielding the light rays and a transmissive area for passing-through of the light rays. In addition, the disclosure provides a 3D printing method. Due to the limitations of photopolymerization initiators and the LCD display unit currently available, it was unexpected to complete photo-curing 3D printing with a light source with 420˜460 nm wavelength. It is unexpected that a photo-curing 3D printer as provided in the present application not only can ensure the service life of the LCD display unit but also that the curing efficiency is significantly higher than existing devices.

Abstract: Provided is a control method on electronic expansion valve in air conditioner, which comprises: obtaining a real-time running frequency of compressor, a real-time exhaust temperature and a real-time outdoor environment temperature as the compressor running; if the air conditioner working in cooling mode, using a first set rule or a second set rule to obtain an integral coefficient in which the selection is based on the comparison of the real-time outdoor environment temperature and a first set outdoor environment temperature; if the air conditioner working in heating mode, using a first set rule or a third set rule to obtain an integral coefficient in which the selection is based on the comparison of the real-time outdoor environment temperature and a second set outdoor environment temperature; performing a PID control on the electronic expansion valve by using an error of the difference between real-time exhaust temperature and a set target exhaust temperature.