WO2018095196A1 - Head-mounted display system and safety prompting method thereof - Google Patents

Abstract

Disclosed is a safety prompting method of a head-mounted display system. The safety prompting method comprises the steps of: displaying a first display screen to a user; detecting and determining whether the environment in which the user is located is safe; when the result of determination shows that the environment is not safe, displaying a second display screen to the user after processing the first display screen as the second display screen, and when the result of determination shows that the environment is safe, continuously displaying the first display screen to the user. The invention also provides the head-mounted display system. With application of the method, whether the environment is safe can be effectively prompted to the user without influencing the user watching the display screen.

Description

Head mounted display system and safety warning method thereof

[Technical Field]

The present invention relates to the field of electronic devices, and in particular, to a head mounted display system and a security prompting method thereof.

 【Background technique】

Virtual reality (VR, Virtual Reality) is a computer simulation system that can create and experience virtual worlds. It uses computer simulation to generate a virtual world in three-dimensional space, providing users with simulations of visual, auditory, tactile and other senses, making users feel like they are there. general. With the development and popularization of VR technology, its application has become more and more extensive. At present, the most popular application is VR games. More and more manufacturers are investing in the research and development and promotion of VR games. To provide a more immersive game, activities are inevitable. However, the VR game has limited space for activities. When users are immersed in the game to watch the game screen, they can't see the surrounding environment, causing the user to be in danger and not aware of it. It often causes the user's body to collide with obstacles or fall and cause injury. .

Therefore, there is a need to provide a head-mounted display system and a safety alert method thereof to solve the above problems.

 [Summary of the Invention]

The technical problem to be solved by the present invention is to provide a head-mounted display system and a security prompting method thereof, which can effectively remind the user whether the surrounding environment is safe and does not affect the user viewing the display screen.

In order to solve the above technical problem, a technical solution adopted by the present invention is to provide a security prompting method for a head mounted display system, wherein the security prompting method includes: displaying a first display screen to a user; detecting and detecting at a predetermined time interval Determining whether the environment in which the user is located is safe; when the determination result is unsafe, processing the first display screen as the second display screen, displaying the second display screen to the user, and continuing to display the first display screen to the user when the determination result is safe The first display screen is a game screen, a video file play screen or a software control interface.

In order to solve the above technical problem, another technical solution adopted by the present invention is to provide a security prompting method for a head mounted display system, wherein the security prompting method includes: displaying a first display screen to a user; detecting and determining the user's location Whether the environment is safe or not; when the determination result is unsafe, the first display screen is processed into the second display screen, and the second display screen is displayed to the user, and the first display screen is continuously displayed to the user when the determination result is safe.

In order to solve the above technical problem, another technical solution adopted by the present invention is to provide a head mounted display system, wherein the head mounted display system includes a picture display module, a detection and determination module, and a picture processing module, and the picture display module is used for Displaying a first display screen to the user, the detection determining module is configured to detect and determine whether the environment in which the user is located is safe, and the screen processing module is configured to process the first display screen into a second display screen when the determination result is unsafe, and display the screen The module is further configured to display the second display screen to the user after the first display screen is processed into the second display screen, and the screen display module is further configured to continue to display the first display screen to the user when the determination result is safe.

The beneficial effects of the present invention are: different from the prior art, the present invention displays the first display screen to the user; performs security detection on the environment in which the user is located, and generates an evaluation result; and processes the first display image according to the evaluation result as The second display screen is displayed to the user, so that when the user sees the processed second display screen, the user can know whether he is in a dangerous state, effectively reminds the user whether the surrounding environment is safe, and does not affect the user viewing the display screen.

 [Description of the Drawings]

1 is a flow chart showing a first embodiment of a safety prompting method of a head mounted display system of the present invention;

2 is a flow chart of a second embodiment of a security prompting method for a head mounted display system of the present invention;

3 is a flow chart of a third embodiment of a safety prompting method of the head mounted display system of the present invention;

4 is a schematic block diagram of a first embodiment of a head mounted display system of the present invention;

Figure 5 is a block diagram showing a second embodiment of the head mounted display system of the present invention;

Figure 6 is a block diagram showing a third embodiment of the head mounted display system of the present invention;

7 is a schematic diagram showing the principle of a hardware embodiment of a head mounted display system of the present invention.

【detailed description】

The invention will now be described in detail in conjunction with the drawings and embodiments.

Please refer to FIG. 1. FIG. 1 is a flow chart of a first embodiment of a security prompting method for a head mounted display system according to the present invention. In this embodiment, the head mounted display system may be a separate head mounted display device or a head mounted display system composed of a mobile terminal and VR glasses, wherein the mobile terminal and the VR glasses are connected in a wireless or wired manner. The mobile terminal is placed in the housing of the VR glasses, and the security prompting method of the head mounted display system includes the following steps:

Step S11: Display the first display screen to the user.

In step S11, the first display screen may be a game screen, a video file play screen, or a software manipulation interface.

Step S12: Detect and determine whether the environment in which the user is located is safe.

In step S12, it is detected and judged whether the environment in which the user is located is safe, for example, during the process of the user viewing the first display screen. Detecting and judging whether the environment in which the user is located can be safe or not by comparing the distance between the obstacle and the obstacle, detecting the level of the ground around the user, or detecting the parameters of other surrounding environments, and determining whether the environment is safe. See the description below.

In step S12, when the determination result is unsafe, step S13 is performed: the first display screen is processed into the second display screen, and the second display screen is displayed to the user.

In step S13, the processing of the first display screen may be: processing the first display screen into a second display screen that is in mirror relationship with each other or rotating the first display screen into a second display screen. For example, the content displayed on the first display screen and the second display screen are the same, but the form of the display is different. Specifically, for example, the first display screen is a game screen, and the second display screen is in a mirror image relationship with the game screen. Game screen. See the description below for details.

In step S12, when the result of the determination is safe, step S14 is performed: continuing to display the first display screen to the user.

After step S13 or step S14, the process returns to step S12: detecting and determining whether the environment in which the user is located is safe. The head mounted display system detects and determines whether the environment in which the user is located is safe at predetermined time intervals. The predetermined time interval is preferably 1 second, and in other embodiments, may be other time intervals. After returning to step S12, the subsequent steps are continued as in the above procedure.

In this embodiment, when detecting and determining that the environment in which the user is located is not safe, the first display screen is processed into a second display screen and then the second display screen is displayed to the user to prompt the user to be in an unsafe environment. The user can be effectively reminded that the user is in an unsafe environment without affecting the user's viewing of the display screen.

Please refer to FIG. 2. FIG. 2 is a flow chart of a second embodiment of a security prompting method of the head mounted display system of the present invention. In this embodiment, detecting whether the environment in which the user is located includes: detecting a distance between the head mounted display system and the obstacle; comparing the distance with the predetermined distance; if the distance is less than the predetermined distance, the determination result is unsafe, if If the distance is greater than or equal to the predetermined distance, the judgment result is safe. In this embodiment, the security prompting method of the head mounted display system includes the following steps:

Step S21: Display the first display screen to the user.

Step S22: detecting the distance between the head mounted display system and the obstacle.

In step S22, for example, detecting the distance between the head mounted display system and the obstacle may specifically: projecting the light onto the obstacle in the environment; collecting the light spot image formed by the light on the obstacle; The spot image is matched with the stored preset spot image; when the spot image matches the first preset spot image in the preset spot image, the first preset is determined according to the correspondence between the preset spot image and the distance The first distance corresponding to the spot image; the first distance is used as the distance between the head mounted display system and the obstacle. In other embodiments, the ranging method may be an infrared ranging method, an ultrasonic ranging method, or a ranging method of Bluetooth, WiFi, GPS, and other sensor technologies, and details are not described herein again.

Step S23: comparing the distance with the predetermined distance, if the distance is less than the predetermined distance, the determination result is unsafe, and if the distance is greater than or equal to the predetermined distance, the determination result is safe.

In step S23, when the determination result is unsafe, step S24 is executed: the first display screen is processed into the second display screen, and the second display screen is displayed to the user.

In step S23, when the result of the determination is safe, step S25 is performed: continuing to display the first display screen to the user.

Returning to step S22 after step S24 or step S25: detecting the distance between the head mounted display system and the obstacle. The head mounted display system detects the distance between the head mounted display system and the obstacle at predetermined time intervals. The predetermined time interval is preferably 1 second, and in other embodiments, may be other time intervals. After returning to step S22, the subsequent steps are continued as in the above procedure.

Preferably, in step S24, the first display screen is processed into the second display screen, and the second display screen is displayed to the user, specifically: processing the first display screen into a second display mirror image relationship with the first display screen. Picture. Mutual mirroring relationship means that the virtual image of the first display screen in the mirror surface coincides with the second display screen.

In other embodiments, processing the first display screen into the second display screen may further: rotating the first display screen into the second display screen. For example, the first display screen is rotated into a second display screen according to the distance detected in step S22, wherein the smaller the distance, the greater the degree of rotation of the rotation processing. Specifically, for example, the degree of rotation is 90 degrees when the detected distance is the first distance, that is, the second display screen is rotated after the first display screen is rotated by 90 degrees; for example, the detected distance is the second The distance is rotated by 180 degrees, that is, the second display screen is rotated after the first display screen is rotated by 180 degrees; the rotation degree is 270 degrees when the detected distance is the third distance, that is, the first display screen is displayed. After rotating 270 degrees, it is the second display screen, wherein the first distance is greater than the second distance, and the second distance is greater than the third distance.

It is not difficult for those skilled in the art to understand that there are many ways to process the first display screen into the second display screen, and details are not described herein again.

Please refer to FIG. 3. FIG. 3 is a flow chart of a third embodiment of the security prompting method of the head mounted display system of the present invention. In this embodiment, detecting whether the environment in which the user is located includes: detecting the level of the ground around the user; comparing the level of flatness with the predetermined level of flatness, and determining the result is safe if the level of flatness is higher than or equal to the predetermined level of flatness. If the level of flatness is lower than the predetermined level, the judgment result is unsafe. In this embodiment, the security prompting method of the head mounted display system includes the following steps:

Step S31: Display the first display screen to the user.

Step S32: Detecting the flatness of the ground around the user.

In step S32, for example, detecting the level of the ground around the user may be: capturing an image of the ground around the user; performing disparity distribution analysis on the image to calculate the flatness of the ground around the user. More specifically, based on the baseline length and focal length of the shot, the ground disparity value of each row in the image is parsed using the geometric configuration of the known image, and the ground level is calculated based on the ground disparity value.

Step S33: Comparing the level of flatness with the predetermined level of flatness, if the level of flatness is higher than or equal to the predetermined flatness, the judgment result is safe, and if the level of flatness is lower than the predetermined flatness, the judgment result is unsafe.

In step S33, when the determination result is unsafe, step S34 is executed: the first display screen is processed into the second display screen, and the second display screen is displayed to the user.

In step S33, when the result of the determination is safe, step S35 is performed: continuing to display the first display screen to the user.

Returning to step S32 after step S34 or step S35: detecting the level of the ground around the user. The head mounted display system detects the level of the ground around the user at predetermined time intervals. The predetermined time interval is preferably 1 second, and in other embodiments, may be other time intervals. After returning to step S32, the subsequent steps are continued as in the above procedure.

Preferably, in step S34, after the first display screen is processed into the second display screen, the second display screen is displayed to the user, specifically: processing the first display screen into a second display that is in mirror relationship with the first display screen. Picture. Mutual mirroring relationship means that the virtual image of the first display screen in the mirror surface coincides with the second display screen.

In other embodiments, processing the first display screen into the second display screen may further: rotating the first display screen into the second display screen. For example, the first display screen is rotated into the second display screen according to the degree of flatness detected in step S32, wherein the smaller the degree of flatness, the greater the degree of rotation of the rotation processing. Specifically, for example, when the detected flatness is the first flatness, the degree of rotation is 90 degrees, that is, the second display screen is rotated after the first display screen is rotated by 90 degrees; for example, the level of detection is flat. The degree of rotation is 180 degrees for the second level of flatness, that is, the second display screen is rotated after the first display screen is rotated by 180 degrees; and the degree of rotation is 270 degrees when the detected flatness is the third level of flatness, that is, After the first display screen is rotated by 270 degrees, it is the second display screen, wherein the first flatness is greater than the second flatness, and the second flatness is greater than the third flatness.

It is not difficult for those skilled in the art to understand that there are many ways to process the first display screen into the second display screen, and details are not described herein again.

Please refer to FIG. 4. FIG. 4 is a block diagram of a first embodiment of a head mounted display system of the present invention. In this embodiment, the head mounted display system may be a separate head mounted display device or a head mounted display system composed of a mobile terminal and VR glasses, wherein the mobile terminal and the VR glasses are connected in a wireless or wired manner. The mobile terminal is placed in the housing of the VR glasses.

In this embodiment, the head mounted display device includes a screen display module 11, a detection determination module 12, and a screen processing module 13.

The screen display module 11 is for displaying the first display screen to the user. For example, the first display screen may be a game screen, a video file playback screen, or a software manipulation interface.

The detection judging module 12 is configured to detect and determine whether the environment in which the user is located is safe. For example, the detection determination module 12 is configured to detect and determine whether the environment in which the user is located is safe during the process of the user viewing the first display screen. Detecting and judging whether the environment in which the user is located can be safe or not by comparing the distance between the obstacle and the obstacle, detecting the level of the ground around the user, or detecting the parameters of other surrounding environments, and determining whether the environment is safe. See the description below.

The screen processing module 13 is configured to process the first display screen as the second display screen when the determination result is unsafe.

The screen display module 11 is further configured to display the second display screen to the user after the first display screen is processed into the second display screen.

The screen display module 13 is further configured to continue to display the first display screen to the user when the determination result is safe.

For example, the content displayed on the first display screen and the second display screen are the same, but the form of the display is different. Specifically, for example, the first display screen is a game screen, and the second display screen is in a mirror image relationship with the game screen. Game screen. See the description below for details.

In the process of the user viewing the first display screen or the second display screen, the detecting and determining module detects and determines whether the environment in which the user is located is safe at a predetermined time interval, and the predetermined time interval is preferably 1 second. In other embodiments, For other time intervals.

In this embodiment, when the detection determination module 12 detects and determines that the environment in which the user is located is not safe, the screen processing module 13 processes the first display screen into the second display screen, and then the screen display module 11 displays the second display screen to The user can prompt the user to be in an unsafe environment, and can effectively remind the user that the user is in an unsafe environment without affecting the user's viewing of the display screen.

Please refer to FIG. 5. FIG. 5 is a schematic block diagram of a second embodiment of the head mounted display system of the present invention. In this embodiment, the head mounted display device includes a screen display module 21, a detection determination module 22, and a screen processing module 23.

The screen display module 21 is identical to that described above, and details are not described herein again.

The detection judging module 22 includes a distance detecting module 221 and a security judging module 222. The distance detecting module 221 is configured to detect a distance between the head mounted display system and the obstacle. The security judging module 222 is configured to compare the distance with the predetermined distance. If the distance is less than or equal to the predetermined distance, the judgment result is unsafe. If the distance is greater than or equal to the predetermined distance, the judgment result is safe.

For example, the distance detecting module 211 may include a light emitting module, a spot image capturing module, a spot image matching module, and a distance finding module. The distance detecting module 221 detects the distance between the head mounted display system and the obstacle, and specifically: the light emitting module projects the light onto the obstacle in the environment; the light spot image collecting module collects the light spot formed by the light on the obstacle. The image spot matching module matches the collected spot image with the stored preset spot image; the distance finding module matches the preset spot image and distance when the spot image matches the first preset spot image in the preset spot image Corresponding relationship between the first preset spot image corresponding to the first distance; the first distance is used as the distance between the head mounted display system and the obstacle. In other embodiments, the ranging method may be an infrared ranging method, an ultrasonic ranging method, or a ranging method of Bluetooth, WiFi, GPS, and other sensor technologies, and details are not described herein again.

In the embodiment, the screen processing module 23 processes the first display screen into the second display screen. Specifically, the screen processing module 23 processes the first display screen into a second display screen that is in mirror relationship with the first display screen. Mutual mirroring relationship means that the virtual image of the first display screen in the mirror surface coincides with the second display screen.

In other embodiments, the screen processing module 23 may process the first display screen into the second display screen. The screen processing module 23 may further rotate the first display screen into the second display screen. For example, the first display screen is rotated into a second display screen according to the distance detected by the distance detecting module 221, wherein the smaller the distance, the greater the degree of rotation of the rotation processing. Specifically, for example, when the distance detected by the distance detecting module 221 is the first distance, the degree of rotation is 90 degrees, that is, the second display screen is rotated after the first display screen is rotated by 90 degrees; for example, in the detected When the distance is the second distance, the degree of rotation is 180 degrees, that is, the second display screen is rotated after the first display screen is rotated by 180 degrees; when the detected distance is the third distance, the degree of rotation is 270 degrees, that is, After the first display screen is rotated by 270 degrees, it is a second display screen, wherein the first distance is greater than the second distance, and the second distance is greater than the third distance.

It is not difficult for those skilled in the art to understand that there are many ways for the picture processing module 23 to process the first display picture into the second display picture, and details are not described herein again.

Please refer to FIG. 6. FIG. 6 is a schematic block diagram of a third embodiment of the head mounted display system of the present invention. In the embodiment, the head mounted display device includes a screen display module 31, a detection determination module 32, and a screen processing module 33.

The screen display module 21 is identical to that described above, and details are not described herein again.

In this embodiment, the detection determining module 32 includes a flatness detecting module 321 and a security determining module 322. The flatness detecting module 321 is configured to detect the level of the ground around the user, and the security determining module 322 is configured to flatten the level and the predetermined level. When the degree of flatness is higher than or equal to the predetermined flatness, the judgment result is safe, and if the flatness is lower than the predetermined flatness, the judgment result is unsafe.

For example, the flatness detection module 321 includes a camera module and a parallax analysis module. The flatness detection module 321 detects that the level of the ground around the user is flat: the camera module captures an image of the ground around the user; and the parallax analysis module performs parallax distribution on the image. Analyze to calculate the level of ground around the user. More specifically, based on the baseline length and focal length of the shot, the ground disparity value of each row in the image is parsed using the geometric configuration of the known image, and the ground level is calculated based on the ground disparity value.

In the embodiment, the screen processing module 33 processes the first display screen into the second display screen. Specifically, the screen processing module 33 processes the first display screen into a second display screen that is in mirror relationship with the first display screen. Mutual mirroring relationship means that the virtual image of the first display screen in the mirror surface coincides with the second display screen.

In other embodiments, the screen processing module 33 may process the first display screen into the second display screen. The screen processing module 33 may further rotate the first display screen into the second display screen. For example, the first display screen is rotated into a second display screen according to the degree of flatness detected by the leveling detection module 321, and the smaller the degree of flatness, the greater the degree of rotation of the rotation processing. Specifically, for example, when the level of flatness detected by the flatness detecting module 321 is the first flatness, the degree of rotation is 90 degrees, that is, the second display screen is rotated after the first display screen is rotated by 90 degrees; for example, When the level of detection is the second level of rotation, the degree of rotation is 180 degrees, that is, the second display screen is rotated after the first display screen is rotated by 180 degrees; and the degree of rotation is 270 when the level of detection is the third level of flatness. That is, the second display screen is rotated after the first display screen is rotated by 270 degrees, wherein the first flatness is greater than the second flatness, and the second flatness is greater than the third flatness.

It should be understood that the division of the above modules is a logical function division, and the actual implementation may have another division manner, for example, two modules may be integrated into another system, or some features may be ignored or not executed. In addition, the connections between the modules may be through some interfaces, or may be electrical or other forms. The above modules may be implemented in the form of software functional blocks or in the form of hardware such as that shown in FIG.

As shown in FIG. 7, FIG. 7 is a schematic diagram of the principle of the hardware embodiment of the head mounted display system of the present invention. The head mounted display system includes at least one processor 41, at least one memory 42, at least one sensor 43, and at least one display 44. For convenience of explanation, the number of the processor 41, the memory 42, and the sensor 43 shown in FIG. 7 is one. The memory 42 is used to store a computer program, and the processor 41 executes the computer program for performing the following steps:

Instructing display 44 to display a first display screen;

The indicator sensor 43 detects the data, acquires the data from the sensor 43 and determines whether the environment in which the user is located is safe according to the data;

When the determination result is unsafe, the first display screen is processed into the second display screen, and then the display screen 44 is instructed to display the second display screen to the user, and when the determination result is safe, the display unit 44 is instructed to display the first display screen to the user;

The return indication sensor 43 detects data, and based on the data, determines whether the environment in which the user is located is safe. The display 44 instructs the sensor to detect data at a predetermined time interval during the display of the first display screen or the second display screen to the user, and acquires the data from the sensor 43. The data is based on the data to determine whether the environment in which the user is located is safe, and the predetermined time interval is preferably 1 second.

Alternatively, in one case, sensor 43 can be a distance sensor. The indicator sensor 43 detects the data, acquires the data from the sensor 43 and determines whether the environment in which the user is located is safe according to the data:

The distance sensor detects the distance between the head mounted display system and the obstacle, obtains the distance from the distance sensor, compares the distance with the predetermined distance, and if the distance is less than the predetermined distance, the determination result is unsafe, if the distance is greater than or equal to the predetermined distance Then the judgment result is safe.

Alternatively, in another case, sensor 43 may be an image sensor. The indicator sensor 43 detects the data, acquires the data from the sensor 43 and determines whether the environment in which the user is located is safe according to the data:

Instructing the image sensor to acquire an image of the ground around the user, obtaining the image from the image sensor to calculate the level of flatness, comparing the level of flatness with a predetermined level of flatness, and determining the result is safe if the level of flatness is higher than or equal to a predetermined level of flatness, if If the level of flatness is lower than the predetermined flatness, the judgment result is unsafe.

Optionally, in one case, processing the first display screen as the second display screen is specifically: processing the first display screen into a second display screen that is in mirror relationship with the first display screen. Mutual mirroring relationship means that the virtual image of the first display screen in the mirror surface coincides with the second display screen.

Optionally, in another case, processing the first display screen into the second display screen may further: rotating the first display screen into the second display screen. For example, the first display screen is rotated into a second display screen according to the distance detected by the distance sensor or the flatness detected by the image collector, wherein the smaller the distance or the flatness, the greater the degree of rotation of the rotation processing.

Different from the prior art, the present invention displays the first display screen to the user; performs security detection on the environment in which the user is located and generates an evaluation result; and processes the first display screen into the second display screen according to the evaluation result; The second display screen is displayed, so that when the user sees the processed second display screen, the user can know whether he is in a dangerous state, effectively reminds the user whether the surrounding environment is safe, and does not affect the user viewing the display screen.

The above is only the embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the invention and the drawings are directly or indirectly applied to other related technologies. The fields are all included in the scope of patent protection of the present invention.

Claims (19)

A security prompting method for a head mounted display system, wherein the security prompting method comprises: Displaying a first display screen to the user; Detecting and judging whether the environment in which the user is located is safe at predetermined time intervals; When the determination result is unsafe, the first display screen is processed into the second display screen, and the second display screen is displayed to the user, and the first display is continued to be displayed to the user when the determination result is safe. Picture The first display screen is a game screen, a video file play screen or a software control interface. The security prompting method according to claim 1, wherein the detecting and determining whether the environment in which the user is located is secure comprises: Detecting a distance between the head mounted display system and an obstacle; The distance is compared with a predetermined distance, and if the distance is less than the predetermined distance, the determination result is unsafe, and if the distance is greater than or equal to the predetermined distance, the determination result is safe. The security prompting method according to claim 1, wherein the detecting and determining whether the environment in which the user is located is secure comprises: Detecting the level of the ground around the user; Comparing the level of flatness with a predetermined level of flatness, the determination result being safe if the level of flatness is higher than or equal to the predetermined flatness, and the determining if the level of flatness is lower than the predetermined flatness The result is unsafe. The security prompting method according to claim 2, wherein processing the first display screen into the second display screen comprises: The first display screen is processed into a second display screen that is in mirror relationship with the first display screen. The security prompting method according to claim 3, wherein processing the first display screen into the second display screen comprises: The first display screen is processed into a second display screen that is in mirror relationship with the first display screen. The security prompting method according to claim 2, wherein processing the first display screen into the second display screen comprises: The first display screen is rotated into a second display screen. The security prompting method according to claim 3, wherein processing the first display screen into the second display screen comprises: The first display screen is rotated into a second display screen. A security prompting method for a head mounted display system, wherein the security prompting method comprises: Displaying a first display screen to the user; Detecting and judging whether the environment in which the user is located is safe; When the determination result is unsafe, the first display screen is processed into the second display screen, and the second display screen is displayed to the user, and the first display is continued to be displayed to the user when the determination result is safe. Picture. The security prompting method according to claim 8, wherein the detecting and determining whether the environment in which the user is located is safe: Detecting a distance between the head mounted display system and an obstacle; The distance is compared with a predetermined distance, and if the distance is less than the predetermined distance, the determination result is unsafe, and if the distance is greater than or equal to the predetermined distance, the determination result is safe. The security prompting method according to claim 8, wherein the detecting and determining whether the environment in which the user is located is safe: Detecting the level of the ground around the user; Comparing the level of flatness with a predetermined level of flatness, the determination result being safe if the level of flatness is higher than or equal to the predetermined flatness, and the determining if the level of flatness is lower than the predetermined flatness The result is unsafe. The security prompting method according to claim 9, wherein processing the first display screen into the second display screen comprises: The first display screen is processed into a second display screen that is in mirror relationship with the first display screen. The security prompting method according to claim 10, wherein processing the first display screen into the second display screen comprises: The first display screen is processed into a second display screen that is in mirror relationship with the first display screen. The security prompting method according to claim 9, wherein processing the first display screen into the second display screen comprises: The first display screen is rotated into a second display screen. The security prompting method according to claim 10, wherein processing the first display screen into the second display screen comprises: The first display screen is rotated into a second display screen. A head-mounted display system, wherein the head-mounted display system includes a screen display module, a detection determination module, and a screen processing module, wherein the screen display module is configured to display a first display screen to a user, and the detection and determination module For detecting and determining whether the environment in which the user is located is safe, the screen processing module is configured to process the first display screen into a second display screen when the determination result is unsafe, and the screen display module further uses The second display screen is displayed to the user after the first display screen is processed as the second display screen, and the screen display module is further configured to continue to the user when the determination result is safe. The first display screen is displayed. The head-mounted display system according to claim 15, wherein the detection determining module comprises a distance detecting module and a safety determining module, wherein the distance detecting module is configured to detect between the head mounted display system and an obstacle a distance, the safety judging module is configured to compare the distance with a predetermined distance, and if the distance is less than the predetermined distance, the determining result is unsafe, if the distance is greater than or equal to the predetermined distance, The judgment result is safe. The head-mounted display system according to claim 15, wherein the detection determination module comprises a flatness detection module and a security judgment module, and the flatness detection module is configured to detect a level of the ground around the user, The safety judgment module is configured to compare the level of flatness with a predetermined level of flatness, and if the level of flatness is higher than or equal to the predetermined level of flatness, the determination result is safe if the level of flatness is lower than the predetermined level. The degree of flatness is that the judgment result is unsafe. The head mounted display system according to claim 16, wherein the picture processing module is configured to process the first display picture into a second display picture in mirror relationship with the first display picture. The head mounted display system according to claim 16, wherein the picture processing module is configured to rotate the first display picture into a second display picture.