Abstract: A device and system for testing a camera in high and low temperature environments. The device includes: a high and low temperature cabinet, a parallel light tube component, a test piece, a test box, a first positioning table, and a second positioning table, where the high and low temperature cabinet is connected to the test box, the test box is arranged on the first positioning table, the test piece is arranged in the parallel light tube component, the parallel light tube component is arranged on the second positioning table, and the parallel light tube component and the test box are arranged opposite to each other. The system includes: an image acquisition card, a display module, and an analysis module, where the image acquisition card is electrically connected to a camera module to be detected, the display module, and the analysis module for performing performance detection on the camera module.

Abstract: A magnetic piston shoe pair for an axial piston pump and the motor includes: pistons, coil suites, piston shoes and a swash plate, wherein the interior of the coil suite is a closed coil; the bearing surface that the end surface of the swash plate abuts the piston shoe is provided with micro-molding holes; the micro-molding holes are hemispherical; the back surface of the swash plate is provided with a primary iron core and two secondary iron cores; the iron cores are wound with coil; the coil is connected to an external alternating current power supply. When the pump/motor is working, the coil is energized to generate a magnetic field, thereby adsorbing the piston shoe on the swash plate. Meanwhile, the coil suite generates an inductive magnetic field.

Abstract: A magnetic piston shoe pair for an axial piston pump and the motor includes: pistons, coil suites, piston shoes and a swash plate, wherein the interior of the coil suite is a closed coil; the bearing surface that the end surface of the swash plate abuts the piston shoe is provided with micro-molding holes; the micro-molding holes are hemispherical; the back surface of the swash plate is provided with a primary iron core and two secondary iron cores; the iron cores are wound with coil; the coil is connected to an external alternating current power supply. When the pump/motor is working, the coil is energized to generate a magnetic field, thereby adsorbing the piston shoe on the swash plate. Meanwhile, the coil suite generates an inductive magnetic field.