32results about How to "Use less devices" patented technology

The invention discloses a non-ground voltage measuring device and method. By placing a metal plate between the wire to be measured and a virtual ground, the voltage of the wire to be measured is compared with the equivalent capacitance of the wire to be measured and the virtual ground of the metal plate. The corresponding relationship is established, and then the voltage signal representing the corresponding relationship is modulated by a high-frequency signal and frequency-divided to calculate the voltage of the wire to be tested. It can be seen that the measuring device of the present application uses a virtual ground for voltage measurement and calculation without the need for insulation design; moreover, the measuring device of the present application uses fewer devices, is smaller in size, is easy to assemble and disassemble, and has higher construction safety, thereby meeting the requirements of The development needs of smart grid.

The airbag-driven trailer translational lifting control system and control method of the present invention include a signal acquisition unit, an airbag drive unit and a controller unit, the signal acquisition unit includes a proximity switch, a sensing area and an attitude sensor, and the airbag drive unit includes three Position two-way valve, opening valve and pneumatic latch, the proximity switch collects the chassis position signal through the sensing area and transmits the electrical command to the controller unit, the controller unit controls the action of the pneumatic latch according to the electrical command and then controls the inflation and deflation of the airbag The sensor collects the tilt angle information of the trailer chassis and sends it to the controller unit. The controller unit controls the action of the three-position two-way valve and the opening valve according to the obtained chassis tilt angle information to control the inflation and deflation rate. The invention adopts the control air bag to inflate and deflate to carry out the loading and unloading process, and the lifting is stable. Due to the cushioning performance of the air bag, the trailer can also effectively reduce the damage to the transport vehicle caused by vehicle bumps during the transportation process.

The invention belongs to the field of computer-generated holography and three-dimensional display, and particularly relates to a time-division multiplexing-based color holographic three-dimensional display method and system. By the display system, a multi-view two-dimensional image of a color target object is obtained by a method of CCD camera or computer graphics; a group of target images suitable for phase-type hologram calculation are generated after a preprocessing transformation process; a corresponding phase-type hologram is calculated by an iterative Fourier transform algorithm and is loaded to a spatial light modulator in a time-division manner; a synchronization control circuit controls red, green and blue three-color light sources to synchronously display in sequence; and three monochromatic holographic reconstructed images are generated on a reconstruction plane in a time-division manner, and corresponding reconstructed image pixels are directionally diffracted to the position at which a pixel-type nano grating is fixed to form different viewpoints, thereby obtaining multi-view color reconstructed images and achieving true color three-dimensional display. The hologram is quickly refreshed and loaded by combining the spatial light modulator, so that the multi-view real color full-parallax dynamic holographic three-dimensional reconstruction of the target object is achieved.