Abstract: An intelligent anesthetization system for transperineal prostate puncturing based on multimodal medical images is provided. The system includes a coordinate system definition module, a markup of MRI sequence image and 3D reconstruction module, an ultrasonic data extraction module, a registration module and an anesthetic planning module. This system transforms images in the preoperative nuclear magnetic imaging coordinate system as well as the target area of anesthetization into real-time electromagnetic emitter coordinate system through multimodal medical image registration, thereby realizing the comprehensive fusion of the target area of anesthetization in nuclear magnetic resonance image and ultrasonic image, which can be used for medical teaching or surgical guidance and can help to achieve precise positioning of anesthetized area for transperineal prostate biopsy.

Abstract: An ultrasonic puncture guidance planning system based on a multi-modal medical image registration, which includes: an MRI sequence image rendering unit configured to receive MRI sequence images, and perform three-dimensional rendering and plot puncture points; an ultrasound sequence image reconstruction unit configured to receive ultrasound sequence images and reconstruct ultrasound volume data; a registration unit configured to perform a three-dimensional registration operation to obtain a registration transformation coefficient; and a puncture planning unit configured to receive ultrasound images of a human body acquired by an ultrasound probe, and generate and display a puncture planning image according to a system puncture point and a current ultrasonic image.

Abstract: A motor-driven friction braking device for a rail vehicle is mainly composed of a torque motor, a speed reduction mechanism, an electromagnetic brake (1), a screw nut transmission mechanism and a brake friction pair (9). The torque motor, a screw (7), the speed reduction mechanism and the electromagnetic brake (1) are coaxially mounted; the torque motor is fixedly connected to the speed reduction mechanism, and the speed reduction mechanism is fixedly connected to the screw (7); the screw (7) is in non-self-locking threaded connection with a nut (8), and one end of the nut (8) is connected to the brake friction pair (9); and the electromagnetic brake (1) is mounted on the screw (7).

Abstract: A microcomputer-controlled electromechanical braking system comprises an electromechanical braking control device (1) and an electromechanical braking unit (5); the electromechanical braking control device (1) comprises a braking microcomputer control unit (2), an electromechanical control unit (3) and a standby power supply module (4); the braking microcomputer control unit (2) receives a braking instruction signal sent by a driver or an automatic driving system, performs the calculation of a target braking force and braking management, and at the same time, can communicate with braking microcomputer control units (2) of other vehicles in a train group.

Abstract: A mechanical motor-driven friction brake device for a rail vehicle consists of a torque motor, an electromagnetic brake (5), a screw nut transmission mechanism, and a brake friction pair (6), the torque motor and a screw (4) being coaxially mounted, the screw (4) being in non-self-locking threaded connection with a nut (3), and one end of the nut (3) being connected to the brake friction pair (6); the device drives, by means of the torque motor, the screw (4) to rotate so as to drive the nut (3) to perform linear motion and outputs a pressure or a pulling force to the brake friction pair (6), so as to brake or release the rail vehicle; in addition, this device can lock the screw by means of the electromagnetic brake (5), realizing the function of parking brake.

Abstract: A motor-driven friction braking device for a rail vehicle is mainly composed of a torque motor, a speed reduction mechanism, an electromagnetic brake (1), a screw nut transmission mechanism and a brake friction pair (9). The torque motor, a screw (7), the speed reduction mechanism and the electromagnetic brake (1) are coaxially mounted; the torque motor is fixedly connected to the speed reduction mechanism, and the speed reduction mechanism is fixedly connected to the screw (7); the screw (7) is in non-self-locking threaded connection with a nut (8), and one end of the nut (8) is connected to the brake friction pair (9); and the electromagnetic brake (1) is mounted on the screw (7).