Exhibition hall on the second floor of Hebei Science and Technology Department.

The transistor exhibition area on the second floor is relaxed and lively, so we choose fashionable blue as the main color of this exhibition area. The plane layout of the exhibition area is composed of oblique right angles, forming a cool space.

Acousto-optic exhibition area is designed as two floors. The audience first came to the circular staggered floor through the ramp, and there was an orange suspended sound gathering cover above the center of the staggered floor. The renovation of this exhibition no longer takes up ground space, and the staggered floor can become a performance stage for organizing activities. The ramp-shaped passage realizes the barrier-free visit of the exhibition area.

The upper layer is dominated by acoustic exhibits, and the lower layer is decorated with optical exhibits suitable for dark environment.

There is a music score hanging on the main wall of the acousto-optic exhibition area, which is not only the decoration of an exhibition hall, but also the acoustic display-listening to the echo. This is an idea that combines context and content. Here, you can feel the wonderful penalty shootout on the court. There are three different levels of goalkeepers to choose from: amateur, ordinary and professional. You can choose the difficulty level according to your own skills, and then put the football on the service point and kick it to the goal in front of you. At this point, the virtual goalkeeper in the goal can accurately judge the position of the ball and make corresponding saves. The computer will automatically judge whether the shooting is successful or not and record your shooting results.

Why can our goalkeeper accurately judge where the ball comes from? This is a grating network composed of photoelectric sensors at work. This grid is between the shooter and the goal. When the football flying from the service point passes through the grating, the photoelectric sensor transmits the captured motion parameters of the ball to the computer, and the computer calculates the trajectory and speed of the ball accordingly, so as to control the virtual goalkeeper to make corresponding rescue actions. Driving simulator VR-4 is a new generation driver training system developed by using modern computer virtual reality technology. Compared with the general cockpit simulator, the main difference is that the simulated vehicle consists of a real vehicle, with a 3-meter-wide arc screen in front of the vehicle and a mechanical simulator weighing nearly 1 ton under the driving wheel. This unique structure, coupled with exquisite 3D images and control detection software, makes driving on the VR-4 simulator just like driving a real car on the ground. According to the computer retrieval report of the Literature Center of China Academy of Sciences, the technical level of VR-4 driving simulator is at the leading level at home and abroad.

The system has the following technical features:

1. Using virtual reality technology, computer generates real-time interactive 3D images.

The computer calculates the current position and direction of the car according to the car motion equation, and then quickly draws the road scene that the driver should see, and projects the motion picture on the big screen 3 meters wide in front of the car through the projector, so that the driver has the same immersion as practicing on the road.

2. Using the mechanical simulator, the simulated car is very similar to the car driving on the road in handling performance.

A well-designed mechanical simulator can simulate the driving of the car and the friction between the wheel and the road surface. In addition, the simulation vehicle adopts a real vehicle, which makes the mechanical handling performance of the whole simulation device very similar to that of a car driving on the ground.

3. AC frequency conversion motor is used to simulate the running characteristics of gasoline engine.

The specially developed software is used to control the AC variable speed motor to simulate the running state of the automobile engine, so that the feeling of driving an electric simulation car is the same as driving a real gasoline engine car.