## 1 Introduction  
There has been rapid development of computer, virtual reality (VR), and Internet of Things (IoT) technologies against the background of artificial intelligence. VR technology has gone through a series of updates and iterations, and now consumer VR products suitable for the market are appearing in front of people. Now VR technology has been applied in all walks of life, which drives the supporting upgrading of a series of VR industry chains such as hardware, technology, content, and platform; this trend also affects the VR industry in China [1; 2]. In 2015, Lighter Chaser Animation and Latin VR Digital Technology both carried out VR film production practice successively. Among them, Latin VR Digital Technology opened the chapter of VR filmmaking in China by making the VR film _Live to the Last_. However, due to the limited profit channels at that time, the producers could only recover the production cost of the film by shooting advertisements on the video platform and cooperating with the VR experience pavilion. However, with the development of VR technology and the improvement in people's living standards, VR technology has made a qualitative leap in the field of film and television production since its development [3]. According to data, by 2021, China will have 85 million VR headsets in use, and the revenue from VR content will reach over 3.5 billion US dollars [4]. Meanwhile, some cinemas in China are ramping up investment. Erdong Pictures plans to set up a virtual reality cinema in Beijing, which will be the third VR cinema in China. In addition to releasing its own VR microfilms, Digital Domain, a visual effects company, has also set up its own VR studios in China [5]. Although there is still a long way to go in the development of VR film and television in China, the future development of VR film and television in China can be predicted.  
When VR technology is used for film and television production, the appearance of virtual characters in films and television dramas is not entirely obtained by pure computer technology. In order to make the movements and expressions of virtual characters more real, sensor technology is often needed to capture the movements and expressions of real characters [6]. Foreign films, such as _Avatar_, _Rise of the Planet of the Apes_, _Beauty and the Beast_, and the Chinese domestic film _Legend of Ravaging Dynasties_ capture actors' movements and expressions by employing sensor technology, and then make virtual characters similar to actors' movements and expressions and put them into virtual scenes. Such production methods can help the actors complete difficult movements, make the virtual characters more real, and increase the viewer's sense of substitution [7]. Sensor technology is the main driver in the IoT; according to the estimation of relevant institutions, driven by the Internet of Things, the compound growth rate of the global sensor market from 2016 to 2021 is estimated to be 11%, and the market size will reach $200 billion in 2021 [8].  
In terms of the current production methods that combine VR and IoT with movies and TV, there are still many problems to be solved compared with ordinary movies. In order to explore the development status and future development direction of VR film and television under the background of artificial intelligence, and the application of sensor technology in VR film and television production, based on the development status of film and television production of VR and IoT technology in China, a prediction algorithm for future development trend is proposed based on the development data. Meanwhile, a method for virtual character interaction is proposed based on IoT sensor technology. Finally, the problems in the development and application of this field are pointed out and corresponding solutions are put forward.