WO2015172321A1

WO2015172321A1 - Infrared distance-measuring anti-collision method and terminal

Info

Publication number: WO2015172321A1
Application number: PCT/CN2014/077415
Authority: WO
Inventors: 朱小进; 李光然; 罗艳彪
Original assignee: 华为技术有限公司
Priority date: 2014-05-14
Filing date: 2014-05-14
Publication date: 2015-11-19
Also published as: CN104335260B; CN104335260A

Abstract

An infrared distance-measuring anti-collision method and terminal, the method comprising: when detecting that the movement speed of the user of a hand-held terminal is greater than a threshold, and a set application on the terminal is started, activating an infrared distance-measuring module on the terminal (S101); according to the current inclination angle of the terminal relative to the horizontal position, adjusting the infrared distance-measuring module to enable the detection direction of the infrared distance-measuring module to be axially parallel to the ground surface (S102); controlling the infrared distance-measuring module to detect the distance between the user and obstacles surrounding the user, and/or the movement speed of the obstacles (S103); and according to the distance, and the movement speed of the user and/or the obstacles, outputting an alarm prompt to the user (S104). Also disclosed is a corresponding terminal. The infrared distance-measuring anti-collision method and terminal have better environmental adaptability, and can adaptively adjust the detection direction, thus greatly reducing the potential safety risk when the user is utilizing the hand-held terminal while walking, and avoiding accidental injury to the user.

Description

Infrared ranging anti-collision method and terminal

Technical field

The present invention relates to the field of intelligent terminal technologies, and in particular, to an infrared ranging anti-collision method and a terminal. Background technique

With the rapid spread of smart terminals, people's daily life is increasingly dependent on smart terminals. People can't avoid answering calls or browsing mobile or tablet information while walking or crossing the road. In these scenarios, since people's attention is mainly concentrated on the information content of the call or the smart terminal, there is a great security risk. In order to minimize such risks, the anti-collision function of the smart terminal is placed in front of us.

At present, infrared ranging technology has matured, and smart terminals such as smart phones have anti-collision function technology. The realization principle is that the rear camera of the existing mobile phone is used for image recognition and processing to determine the environment around the user. When an object is detected to be close, the user is reminded to pay attention to safety. This technology has the following disadvantages: The existing mobile phone camera has a fixed position, cannot be adaptively adjusted according to the user's state, and the coverage of the camera is limited; and the mobile phone visible light camera has poor effect in dark or nighttime, and cannot effectively realize the anti-collision function.

Therefore, it is required to provide a distance avoidance collision mode of a terminal having better environmental adaptability, which can reduce the potential safety risk brought by the user when using the handheld terminal while walking, and avoid the user from being accidentally injured. Summary of the invention

The embodiment of the invention provides an infrared ranging anti-collision method and a terminal, which have better environmental adaptability, can adaptively adjust the detection direction of the infrared ranging module, and minimize the use of the handheld terminal when the user walks. Potential security risks to protect users from accidental injuries.

In one aspect, an infrared ranging anti-collision method is provided, including:

When detecting that the moving speed of the user of the handheld terminal is greater than a set threshold, and the setting application on the terminal is turned on, starting the infrared ranging module on the terminal;

Adjusting the infrared ranging module according to the tilt angle of the current relative horizontal position of the terminal, so that the detecting direction axis of the infrared ranging module is parallel to the ground;

Controlling the infrared ranging module to detect a distance between an obstacle around the user and the user The speed of movement away from and/or the obstacle;

An alarm prompt is output to the user based on the distance and the speed of movement of the user and/or the obstacle.

In a first possible implementation manner, the adjusting the infrared ranging module according to the tilt angle of the current relative horizontal position of the terminal, so that the detecting direction axis of the infrared ranging module is parallel to the ground, The method further includes:

Acquiring the current acceleration value of the terminal and the acceleration value when the terminal is in the horizontal position; acquiring the tilt angle of the current relative horizontal position of the terminal according to the current acceleration value and the acceleration value when the terminal is in the horizontal position .

In combination with the first aspect or the first possible implementation of the first aspect, in a second possible implementation, the infrared ranging module includes a semi-elliptical infrared ranging sensor array and a motor, The infrared ranging sensor array includes first, second and third infrared ranging sensors, a center of the first sensor coincides with a short axis of the semi-elliptical infrared ranging sensor array, the second and the The three sensors are symmetrically distributed with respect to the short axis, and the angle between the center and the minor axis is 60. The center of the motor coincides with the long axis of the semi-elliptical infrared ranging sensor array.

With reference to the first aspect, or the first possible implementation manner of the first aspect, or the second possible implementation manner of the first aspect, in a third possible implementation manner, And/or the moving speed of the obstacle, outputting an alarm prompt to the user, including:

Obtaining a relative moving speed between the user and the obstacle according to a moving speed of the user and/or the obstacle, where the relative moving speed corresponds to an alarm threshold distance;

When the distance reaches an alarm threshold distance corresponding to the relative movement speed, an alarm prompt is output to the user.

In conjunction with the third possible implementation of the first aspect, in a fourth possible implementation manner, the alarm prompting manner includes:

Image alarm prompt, audible alarm prompt or vibration alarm prompt.

With reference to the first aspect, in a fifth possible implementation, the method further includes: turning off the infrared ranging when the moving speed of the user is less than a set threshold and/or the setting application is closed Module; or

The infrared ranging module is turned off when receiving an indication that the user turns off the infrared ranging module. In a second aspect, a terminal is provided, including:

a startup unit, configured to: when detecting that the moving speed of the user of the handheld terminal is greater than a set threshold, and the setting application on the terminal is turned on, starting the infrared ranging module on the terminal;

The adjusting unit is configured to adjust the infrared ranging module according to the tilt angle of the current relative horizontal position of the terminal, so that the detecting direction axis of the infrared ranging module is parallel to the ground;

a control unit, configured to control the infrared ranging module to detect a distance between an obstacle around the user and the user and/or a moving speed of the obstacle;

And a first output unit, configured to output an alarm prompt to the user according to the distance and the moving speed of the user and/or the obstacle.

In a first possible implementation manner, the terminal further includes:

a first acquiring unit, configured to acquire a current acceleration value of the terminal, and an acceleration value when the terminal is in a horizontal position;

And a second acquiring unit, configured to acquire, according to the current acceleration value and an acceleration value when the terminal is in a horizontal position, an inclination angle of a current relative horizontal position of the terminal.

With reference to the second aspect, or the first possible implementation manner of the second aspect, in a second possible implementation, the infrared ranging module includes a semi-elliptical infrared ranging sensor array and a motor, The infrared ranging sensor array includes first, second and third infrared ranging sensors, a center of the first sensor coincides with a short axis of the semi-elliptical infrared ranging sensor array, the second and the The three sensors are symmetrically distributed with respect to the short axis, and the angle between the center and the minor axis is 60. The center of the motor coincides with the long axis of the semi-elliptical infrared ranging sensor array.

With reference to the second aspect, or the first possible implementation manner of the second aspect, or the second possible implementation manner of the second aspect, in a third possible implementation manner, the first output unit includes: a unit, configured to acquire a relative moving speed between the user and the obstacle according to a moving speed of the user and/or the obstacle, where the relative moving speed corresponds to an alarm threshold distance;

And a second output unit, configured to output an alarm prompt to the user when the distance reaches an alarm threshold distance corresponding to the relative moving speed.

In conjunction with the third possible implementation of the second aspect, in a fourth possible implementation manner, the alarm prompting manner includes:

Image alarm prompt, audible alarm prompt or vibration alarm prompt. With reference to the first aspect, in a fifth possible implementation, the terminal further includes: a closing unit, configured to close when the moving speed of the user is less than a set threshold and/or the setting application is closed The infrared ranging module; or

The shutdown unit is configured to close the infrared ranging module when receiving an indication that the user turns off the infrared ranging module. In a third aspect, a terminal is provided, including an input device, an output device, a memory, and a processor. The processor is configured to perform the following steps:

Controlling the infrared ranging module to detect a distance between an obstacle around the user and the user and/or a moving speed of the obstacle;

In a first possible implementation, the processor performs the adjusting of the infrared ranging module according to the tilt angle of the current relative horizontal position of the terminal, so that the detecting direction axis of the infrared ranging module is Before the steps parallel to the ground, perform the following steps:

With reference to the third aspect, or the first possible implementation manner of the third aspect, in a second possible implementation, the infrared ranging module includes a semi-elliptical infrared ranging sensor array and a motor, The infrared ranging sensor array includes first, second and third infrared ranging sensors, a center of the first sensor coincides with a short axis of the semi-elliptical infrared ranging sensor array, the second and the The three sensors are symmetrically distributed with respect to the short axis, and the angle between the center and the minor axis is 60. The center of the motor coincides with the long axis of the semi-elliptical infrared ranging sensor array.

With reference to the third aspect, or the first possible implementation manner of the third aspect, or the second possible implementation manner of the third aspect, in a third possible implementation manner, The distance, and the moving speed of the user and/or the obstacle, the step of outputting an alarm prompt to the user, including:

In conjunction with the third possible implementation of the third aspect, in a fourth possible implementation manner, the alarm prompting manner includes:

Image alarm prompt, audible alarm prompt or vibration alarm prompt.

With reference to the third aspect, in a fifth possible implementation, the processor further performs the following steps: when the moving speed of the user is less than a set threshold and/or the setting application is closed, Infrared ranging module; or

The infrared ranging module is turned off when receiving an indication that the user turns off the infrared ranging module. It can be seen that the infrared ranging and anti-collision method and the terminal provided by the embodiments of the present invention have better environmental adaptability, and can adaptively adjust the detection direction of the infrared ranging module. , to minimize the potential safety risks caused by the use of the handheld terminal while walking, to avoid accidental injury. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments will be briefly described below. Obviously, the drawings in the following description are only some of the present invention. For the embodiments, those skilled in the art can obtain other drawings according to the drawings without any creative work.

FIG. 1 is a flowchart of an infrared ranging anti-collision method according to an embodiment of the present invention;

Figure 2 is a schematic diagram of infrared ranging anti-collision;

FIG. 3 is a flowchart of another infrared ranging anti-collision method according to an embodiment of the present invention; FIG. 4 is a schematic structural diagram of an exemplary terminal;

Figure 5 is a schematic diagram showing the composition of an infrared ranging sensor array;

6 is a schematic diagram of adjustment of an infrared ranging sensor array when the terminal is horizontal to tilted; FIG. 7 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of another terminal according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural diagram of still another terminal according to an embodiment of the present invention. detailed description

BRIEF DESCRIPTION OF THE DRAWINGS The technical solutions in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative work are within the scope of the present invention.

Referring to FIG. 1, a flowchart of an infrared ranging anti-collision method according to an embodiment of the present invention includes the following steps:

Step S101: When it is detected that the moving speed of the user of the handheld terminal is greater than a set threshold, and the setting application on the terminal is turned on, the infrared ranging module on the terminal is activated.

In the embodiment of the present invention, an infrared ranging module is disposed on the terminal, as shown in FIG. 2, and the user of the handheld terminal often opens some applications while walking, and the user's attention is mainly concentrated on these applications. For example, answering the phone, browsing the webpage, etc., not paying attention to the surrounding traffic flow, the flow of people, etc., there is a great security risk. The infrared ranging module set on the terminal in the embodiment of the present invention may be an infrared ranging sensor array, and the infrared measurement The distance module can sense obstacles in front of any environment, such as insufficient light, bad weather, and the like.

The infrared ranging module on the startup terminal has two conditions: the user is in the mobile state and the setting application of the user to open the terminal. Therefore, in this step, detecting whether the user is in a moving state, that is, whether the user's moving speed is greater than the set width The value, and whether the setting application on the detection terminal is turned on, the setting application here refers to an application that requires the user to concentrate on these applications, such as answering a call, opening a game, browsing a webpage or watching a video, etc., user-initiated Applications can be logged through the terminal operating system. When the two detection conditions are satisfied at the same time, the infrared ranging module is automatically started.

Step S102: Adjust the infrared ranging module according to the tilt angle of the current relative horizontal position of the terminal, so that the detecting direction axis of the infrared ranging module is parallel to the ground.

After the setting application is enabled on the terminal, the user's attention is focused on the setting application, which is usually concentrated on the terminal display screen, and the user tilts the terminal so that the terminal display screen faces the user, and can obtain the tilt angle of the current relative horizontal position of the terminal. Adjusting the infrared ranging module according to the tilt angle: In the initial state of starting the infrared ranging module, the terminal is generally in a horizontal position, and the infrared ranging module is also in a straight line with the terminal, that is, in a horizontal position; When the user tilts the terminal, in order to enable the infrared ranging module to accurately and comprehensively detect the obstacle in front, the axis of the detection direction of the infrared ranging module needs to be parallel to the ground. Therefore, the infrared ranging module is adjusted according to the tilt angle. The infrared distance measuring module is driven to rotate, so that the detection direction axis of the infrared distance measuring module is parallel to the ground.

Step S103: Control the infrared ranging module to detect a distance between the obstacle around the user and the user and/or a moving speed of the obstacle.

The infrared ranging module can be controlled to detect the distance between the obstacle and the user, and the existing technology can be used to detect the distance by using the infrared ray, and will not be described here.

The obstacles may be fixed or mobile. The infrared ranging module can be used to detect the moving speed of the moving obstacles. This can also be used in existing technologies, and will not be described here.

Step S104, outputting an alarm prompt to the user according to the distance and the moving speed of the user and/or the obstacle.

According to the distance between the user and the obstacle and the moving speed of the user or the relative moving speed between the user and the obstacle, it can be calculated how long the distance hits the obstacle, and a certain distance can be set. When the distance is wide, an alarm prompt is output to the user.

Of course, you can also set the time threshold to measure the time of the obstacle.

It can be seen that the infrared ranging and anti-collision method provided by the embodiment of the present invention has better environmental adaptability, and can adaptively adjust the detection direction of the infrared ranging module. Limit the potential security risks of using the handheld terminal while walking, and avoid accidental injury. Please refer to FIG. 3 , which is a flowchart of another infrared ranging anti-collision method according to an embodiment of the present invention. The method includes the following steps:

Step S201: When it is detected that the moving speed of the user of the handheld terminal is greater than a set threshold, and the setting application on the terminal is turned on, the infrared ranging module on the terminal is activated.

In the embodiment of the present invention, an infrared ranging module is disposed on the terminal, as shown in FIG. 4, which is a schematic structural diagram of the terminal. The handheld terminal (1) includes an infrared ranging module (2), and may further include a display screen ( 3), a speaker (4), wherein the infrared ranging module (2) of the dotted line frame further comprises an infrared ranging sensor array (5) and Drive motor (6). As shown in FIG. 5, it is a schematic diagram of the composition of the infrared ranging sensor array, and the detection range of the infrared ranging sensor array is a 60-degree cone. The center of the sensor (51) coincides with the semi-elliptical short axis of the infrared ranging sensor array, and the sensor (52) and the sensor (53) are symmetrically distributed with respect to the short axis, and the angle between the center and the minor axis is 60 degrees. In this way, the sensor array can cover a sector of 180 degrees, and under the action of the driving motor, it can cover the environment around the user's handheld terminal. The center of the drive motor coincides with the semi-elliptical long axis of the module. Of course, the infrared ranging module can also use other infrared ranging sensor arrays, which is only an example.

The infrared ranging module on the startup terminal has two conditions: the user is in the mobile state and the setting application of the user to open the terminal. Therefore, in this step, detecting whether the user is in a moving state, that is, whether the user's moving speed is greater than the set width The value, and whether the setting application on the detection terminal is turned on. The user's movement speed can be measured by the acceleration sensor in the terminal. The settings application here refers to applications that require users to focus on these applications, such as answering calls, opening games, browsing web pages, or watching videos. User-initiated applications can be recorded by the terminal operating system. When the two detection conditions are satisfied at the same time, the infrared ranging module is automatically started.

Step S202: Acquire a current acceleration value of the terminal and an acceleration value when the terminal is in a horizontal position.

Step S203: Acquire an inclination angle of a current relative horizontal position of the terminal according to the current acceleration value and an acceleration value when the terminal is in a horizontal position.

Step S202 - Step S203 is to obtain the tilt angle of the current relative horizontal position of the terminal. As shown in Fig. 6, it is an adjustment diagram of the infrared ranging sensor array when the terminal is horizontal to tilted. When the terminal is horizontally placed, the acceleration sensor XYZ triaxial acceleration values are XI, Y1 and Zl, and the infrared ranging sensor array at this time Consistent with the terminal; when the terminal is tilted, the accelerometer's triaxial acceleration value is

X2, Y2 and Z2 can calculate the tilt angle of the terminal by calculating the difference of the three-axis acceleration values in the two states.

Step S204: Adjust the infrared ranging module according to the tilt angle of the current relative horizontal position of the terminal, so that the detecting direction axis of the infrared ranging module is parallel to the ground.

The tilt angle is used as an input value for adjusting the detection direction of the infrared ranging sensor array, and the starting motor adjusts the angle of the infrared ranging sensor array to ensure that the infrared ranging sensor array can be effectively detected. The adjusted infrared ranging sensor detects that the direction axis is parallel to the ground.

Step S205, controlling the infrared ranging module to detect an obstacle around the user and using the The distance between the households and/or the speed at which the obstacle moves.

Step S205 is the same as step S103 of the embodiment shown in FIG. 1, and details are not described herein again.

Step S206: Acquire a relative moving speed between the user and the obstacle according to a moving speed of the user and/or the obstacle, where the relative moving speed corresponds to an alarm threshold distance.

Step S207: When the distance reaches an alarm threshold distance corresponding to the relative moving speed, an alarm prompt is output to the user.

After the infrared ranging module works normally, the environment around the user is monitored in real time. When the surrounding object is sensed to be relatively low speed or close to the user, the handheld terminal displays an image such as the speed and orientation of the obstacle through the interface, and can also pass the speaker. Or the vibration motor reminds the user to pay attention to safety, to provide a variety of alarm prompts to improve the user experience. For different relative movement speeds between the user and the obstacle, different alarm threshold distances can be set to accurately provide the user with an alarm prompt in advance. For example, when the user encounters a fixed object and uses lm/s for normal walking speed, we set the alarm threshold distance to 5m. When the user encounters a higher speed object, such as the speed is 20m/s, we set The alarm wide distance is 30m; when the moving speed of the object is between lm/s and 20m/s, the alarm threshold distance is set to 15m.

Step S208: Turn off the infrared ranging module when the moving speed of the user is less than a set threshold and/or the setting application is closed.

The closing of the infrared ranging sensor can be automatically turned off by the setting of the handheld terminal. The principle of automatic shutdown is that when the handheld terminal accelerometer senses that the user stops moving or the application of the handheld terminal affects the user's attention is turned off, the control drive motor automatically turns off the infrared ranging sensor array and restores its angle to the initial state.

For the closing of the infrared ranging sensor, the user can cancel the alarm anti-collision function, that is, the receiving user turns off the indication of the infrared ranging module, and controls the driving motor to turn off the infrared ranging sensor array, and restores the angle to the initial state.

It can be seen that the infrared ranging and anti-collision method provided by the embodiment of the present invention has better environmental adaptability, and can adaptively adjust the detection direction of the infrared ranging module. Limiting the potential security risks caused by the user's use of the handheld terminal while walking, avoiding the user receiving accidental injury; and setting different alarm threshold distances according to the relative movement speed between the user and the obstacle to accurately advance Provide users with alarm prompts; and provide a variety of alarm prompts to improve the user experience. FIG. 7 is a schematic structural diagram of a terminal according to an embodiment of the present invention. The terminal 1000 includes:

The startup unit 11 is configured to start an infrared ranging module on the terminal when detecting that the moving speed of the user of the handheld terminal is greater than a set threshold and the setting application on the terminal is turned on.

The activation unit 11 activates the infrared ranging module on the terminal to have two conditions: the user is in the mobile state and the setting application of the user to open the terminal, therefore, the activation unit 11 detects whether the user is in the moving state, that is, whether the user's moving speed is greater than the setting. The threshold value, and whether the setting application on the detection terminal is turned on, the setting application here refers to an application that requires the user to concentrate on these applications, such as answering a call, opening a game, browsing a webpage or watching a video, etc., the user starts up. The application can be recorded by the terminal operating system. When both detection conditions are satisfied, the startup unit 11 automatically starts the infrared ranging module.

The adjusting unit 12 is configured to adjust the infrared ranging module according to the tilt angle of the current relative horizontal position of the terminal, so that the detecting direction axis of the infrared ranging module is parallel to the ground.

After the setting application is enabled on the terminal, the user's attention is concentrated on the setting application, which is usually concentrated on the terminal display screen, and the user tilts the terminal so that the terminal display screen faces the user, and can obtain the tilt angle of the current relative horizontal position of the terminal.

The adjusting unit 12 adjusts the infrared ranging module according to the tilt angle: when the initial state of the infrared ranging module is started, the terminal is generally in a horizontal position, and the infrared ranging module is also in a straight line with the terminal, that is, at Horizontal position; When the user tilts the terminal, in order for the infrared ranging module to accurately and comprehensively detect the obstacle in front, the detection direction axis of the infrared ranging module needs to be parallel to the ground, and therefore, the adjustment unit 12 according to the inclination angle The infrared ranging module is adjusted to drive the infrared ranging module to rotate, so that the detection direction axis of the infrared ranging module is parallel to the ground.

The control unit 13 is configured to control the infrared ranging module to detect obstacles around the user and The distance between the users and/or the speed of movement of the obstacle.

The control unit 13 can control the infrared ranging module to detect the distance between the obstacle and the user, and the infrared technology can detect the distance and can use the existing technology, and details are not described herein.

The obstacle may be fixed or mobile. The control unit 13 may detect the moving speed of the moving obstacle by using the infrared ranging module, which may also use the existing technology, and will not be described here.

The first output unit 14 is configured to output an alarm prompt to the user according to the distance and the moving speed of the user and/or the obstacle.

According to the distance between the user and the obstacle and the moving speed of the user or the relative moving speed between the user and the obstacle, it can be calculated how long the distance hits the obstacle, and a certain distance can be set. When the distance is wide, the first output unit 14 outputs an alarm prompt to the user.

It can be seen that, by using a terminal provided by the embodiment of the present invention, the infrared ranging module has better environmental adaptability, and can adaptively adjust the detection direction of the infrared ranging module, thereby minimizing the user's The potential safety risks associated with using a handheld terminal while walking prevent users from receiving accidental injuries. FIG. 8 is a schematic structural diagram of another terminal according to an embodiment of the present invention. The terminal 2000 includes:

The startup unit 21 is configured to start an infrared ranging module on the terminal when the moving speed of the user detecting the handheld terminal is greater than a set threshold and the setting application on the terminal is turned on.

In the embodiment of the present invention, an infrared ranging module is disposed on the terminal, as shown in FIG. 4, which is a schematic structural diagram of the terminal. The handheld terminal (1) includes an infrared ranging module (2), and may further include a display screen ( 3), the speaker (4), wherein the infrared ranging module (2) framed by the dotted line further comprises an infrared ranging sensor array (5) and a driving motor (6). As shown in Figure 5, it is a schematic diagram of the composition of the infrared ranging sensor array. The detection range of the infrared ranging sensor array is 60 degree cone. The center of the sensor (51) coincides with the semi-elliptical short axis of the infrared ranging sensor array, and the sensor (52) and the sensor (53) are symmetrically distributed with respect to the short axis, wherein the angle between the center and the short axis is 60 degrees. In this way, the sensor array can cover a 180-degree sector, and the driving motor can cover the surrounding environment when the user holds the terminal. The center of the drive motor coincides with the semi-elliptical long axis of the module. Of course, the infrared ranging module can also use other infrared ranging sensor arrays, which is only an example.

The startup unit 21 activates the infrared ranging module on the terminal with two conditions: the user is in motion The state and the user turn on the setting application of the terminal. Therefore, the activation unit 21 detects whether the user is in a moving state, that is, whether the moving speed of the user is greater than a set threshold, and whether the setting application on the terminal is turned on. The user's moving speed can be measured by the acceleration sensor in the terminal. The setting application here refers to some applications that require the user's attention to focus on these applications, such as answering a call, opening a game, browsing a webpage or watching a video, etc. User-initiated applications can be recorded by the terminal operating system. When both detection conditions are satisfied, the startup unit 21 automatically activates the infrared ranging module.

The first obtaining unit 22 is configured to acquire a current acceleration value of the terminal and an acceleration value when the terminal is in a horizontal position.

The second obtaining unit 23 is configured to obtain an inclination angle of the current relative horizontal position of the terminal according to the current acceleration value and the acceleration value when the terminal is in a horizontal position.

As shown in Fig. 6, it is an adjustment diagram of the infrared ranging sensor array when the terminal is horizontal to tilted. When the terminal is horizontally placed, the acceleration sensor XYZ triaxial acceleration values are XI, Y1 and Zl, and the infrared ranging sensor array at this time It is consistent with the terminal; when the terminal is tilted, the three-axis acceleration values of the acceleration sensor are X2, Y2 and Z2, and the tilt angle of the terminal can be derived by calculating the difference of the three-axis acceleration values in the two states.

The adjusting unit 24 is configured to adjust the infrared ranging module according to the tilt angle of the current relative horizontal position of the terminal, so that the detecting direction axis of the infrared ranging module is parallel to the ground.

The tilt angle is used as an input value for adjusting the detection direction of the infrared ranging sensor array, and the adjusting unit 24 starts the motor to adjust the angle of the infrared ranging sensor array to ensure that the infrared ranging sensor array can be effectively detected. The adjusted infrared ranging sensor detects that the direction axis is parallel to the ground.

The control unit 25 is configured to control the infrared ranging module to detect a distance between the obstacle around the user and the user and/or a moving speed of the obstacle.

The function of the control unit 25 is the same as that of the control unit 13 of the embodiment shown in Fig. 7, and will not be described again.

The first output unit 26 is configured to output an alarm prompt to the user according to the distance and the moving speed of the user and/or the obstacle.

In the embodiment, the first output unit 26 includes a third obtaining unit 261 and a second output unit.

262.

a third obtaining unit 261, configured to acquire a relative moving speed between the user and the obstacle according to a moving speed of the user and/or the obstacle, where the relative moving speed corresponds to an alarm Wide distance.

The second output unit 262 is configured to output an alarm prompt to the user when the distance reaches an alarm threshold distance corresponding to the relative moving speed.

The closing unit 27 is configured to close the infrared ranging module when the moving speed of the user is less than a set threshold and/or the setting application is turned off.

For the closing of the infrared ranging sensor, the closing unit 27 can be automatically turned off by the setting of the hand-held terminal. The principle of automatic shutdown is that when the handheld terminal acceleration sensor senses that the user stops moving or the application of the handheld terminal affects the user's attention is turned off, the control drive motor automatically turns off the infrared ranging sensor array and restores its angle to the initial state.

The closing unit 27 can also cancel the alarm anti-collision function by the user, that is, receive the user's instruction to turn off the infrared ranging module, control the driving motor to turn off the infrared ranging sensor array, and restore the angle to the initial state.

It can be seen that, by using the terminal provided by the embodiment of the present invention, the infrared ranging module has better environmental adaptability, and can adaptively adjust the detection direction of the infrared ranging module, thereby minimizing the user's The potential safety risk caused by using the handheld terminal while walking, to avoid the user receiving accidental injury; and different alarm wide distances can be set according to the relative movement speed between the user and the obstacle, so as to accurately provide the user with an alarm prompt in advance. And provide a variety of alarm prompts to improve the user experience. FIG. 9 is a schematic structural diagram of still another terminal according to an embodiment of the present invention. The terminal 3000 includes: A processor 31, a memory 32, an input device 33, an output device 34, and a bus system 35, wherein:

The processor 31 controls the operation of the terminal 3000, which may also be referred to as a Central Processing Unit (CPU). Processor 31 may be an integrated circuit chip with signal processing capabilities. The processor 31 can also be a general-purpose processor, a digital signal processing (DSP), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or the like. Programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like.

Memory 32 can include read only memory and random access memory and provides instructions and data to processor 31. A portion of memory 32 may also include non-volatile random access memory (NVRAM).

The various components of terminal 3000 are coupled together by a bus system 35, which may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an extended industry standard architecture ( Extended) Industry Standard Architecture, EISA) Bus, etc. The bus may be one or more physical lines, and when it is a plurality of physical lines, it may be divided into an address bus, a data bus, a control bus, and the like. In some other embodiments of the present invention, the processor 31, the memory 32, and the input device 33 and the output device 34 may also be directly connected through a communication line.

The input device 33 can be embodied as a mouse, a keyboard, a microphone, etc., and the output device 34 can be embodied as a display, an audio device, and a video device. Of course, the input device 33 and the output device 34 can also be implemented by an input/output device, such as a touchable screen.

The processor 31 reads the computer program in the memory 32 to perform the following steps: when detecting that the moving speed of the user of the handheld terminal is greater than a set threshold and the setting application on the terminal is turned on, Infrared ranging module on the terminal;

Controlling the infrared ranging module to detect a distance between an obstacle around the user and the user and/or a moving speed of the obstacle; An alarm prompt is output to the user based on the distance and the moving speed of the user and/or the obstacle.

As an implementation manner, the processor 31 performs the step of adjusting the infrared ranging module according to the tilt angle of the current relative horizontal position of the terminal, so that the detecting direction axis of the infrared ranging module is parallel to the ground. Previously, the following steps were also performed:

In another embodiment, the infrared ranging module includes a semi-elliptical infrared ranging sensor array and a motor, and the infrared ranging sensor array includes first, second, and third infrared ranging sensors. a center of the first sensor coincides with a minor axis of the semi-elliptical infrared ranging sensor array, the second and third sensors are symmetrically distributed with respect to the short axis, and an angle between the center and the minor axis is 60. The center of the motor coincides with the long axis of the semi-elliptical infrared ranging sensor array. Of course, the infrared ranging module can also use other infrared ranging sensor arrays, which is only an example.

In still another embodiment, the processor 31 performs the step of outputting an alarm prompt to the user according to the distance, and the moving speed of the user and/or the obstacle, including:

The alarm prompting method includes:

Image alarm prompt, audible alarm prompt or vibration alarm prompt.

As still another embodiment, the processor 31 further performs the following steps:

Turning off the infrared ranging module when the moving speed of the user is less than a set threshold and/or the setting application is turned off; or

The infrared ranging module is turned off when receiving an indication that the user turns off the infrared ranging module. The computer program included in the processor 31 provided by the embodiment of the present invention may also be implemented as a startup unit, an adjustment unit, a control unit, and a first output unit. The functions implemented by the four units may be referred to the foregoing embodiments, and are not described herein. Narration. It can be seen that, by using a terminal provided by the embodiment of the present invention, the infrared ranging module has better environmental adaptability, and can adaptively adjust the detection direction of the infrared ranging module, thereby minimizing the user's The potential safety risks associated with using a handheld terminal while walking prevent users from receiving accidental injuries.

It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should understand that the present invention is not limited by the described action sequence. Because certain steps may be performed in other sequences or concurrently in accordance with the present invention. In addition, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

In the above embodiments, the descriptions of the various embodiments are different, and the details are not described in the specific embodiments. For details, refer to related descriptions of other embodiments.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by hardware implementation, firmware implementation, or a combination thereof. When implemented in software, the functions described above may be stored in or transmitted as one or more instructions or code on a computer readable medium. Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another. A storage medium may be any available media that can be accessed by a computer. For example, but not limited to: the computer readable medium may include a random access memory (RAM), a read-only memory (ROM), and an electrically erasable programmable read-only memory (Electrically Erasable Programmable). Read-Only Memory (EEPROM), Compact Disc Read-Only Memory (CD-ROM) or other optical disc storage, disk storage media or other magnetic storage devices, or can be used to carry or store an instruction or data structure The desired program code and any other medium that can be accessed by the computer. Also. Any connection may suitably be a computer readable medium. For example, if the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), or wireless technologies such as infrared, radio, and microwave, Then coaxial cable, fiber optic cable, twisted pair, DSL or wireless technologies such as infrared, wireless and microwave are included in the fixing of the associated medium. As used in the present invention, a disk and a disc include a compact disc (CD), a laser disc, a disc, a digital versatile disc (DVD), a floppy disk, and a Blu-ray disc, wherein the disc is usually magnetically copied, and the disc is The laser is used to optically replicate the data. The above combination should also be included in the computer Read the protection of the medium.

In summary, the above description is only a preferred embodiment of the technical solution of the present invention, and is not intended to limit the scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Rights request

1. An infrared ranging anti-collision method, characterized in that:

2. The method according to claim 1, wherein the adjusting the infrared ranging module according to the tilt angle of the current relative horizontal position of the terminal, so that the detecting direction axis of the infrared ranging module Before paralleling the ground, it also includes:

The method according to claim 1 or 2, wherein the infrared ranging module comprises a semi-elliptical infrared ranging sensor array and a motor, and the infrared ranging sensor array comprises a first and a a second and a third infrared ranging sensor, a center of the first sensor coincides with a short axis of the semi-elliptical infrared ranging sensor array, and the second and third sensors are symmetrically distributed with respect to the short axis, The center and the minor axis have an included angle of 60. The center of the motor coincides with the long axis of the semi-elliptical infrared ranging sensor array.

The method according to any one of claims 1 to 3, wherein the alarm prompt is output to the user according to the distance and the moving speed of the user and/or the obstacle, include: Obtaining a relative moving speed between the user and the obstacle according to a moving speed of the user and/or the obstacle, where the relative moving speed corresponds to an alarm threshold distance;

The method according to claim 4, wherein the alarm prompting manner comprises: an image alarm prompt, an audible alarm prompt or a vibration alarm prompt.

6. The method of claim 1, further comprising:

The infrared ranging module is turned off when receiving an indication that the user turns off the infrared ranging module.

7. A terminal, comprising:

8. The terminal according to claim 7, further comprising:

The terminal according to claim 7 or 8, wherein the infrared ranging module comprises a semi-elliptical infrared ranging sensor array and a motor, the infrared ranging sensor array comprising first, second and third infrared ranging sensors, a center of the first sensor and the semi-elliptical infrared The short axes of the ranging sensor arrays coincide, the second and third sensors are symmetrically distributed with respect to the short axis, and the center and the minor axis have an included angle of 60. The center of the motor coincides with the long axis of the semi-elliptical infrared ranging sensor array.

The terminal according to any one of claims 7-9, wherein the first output unit comprises:

a third acquiring unit, configured to acquire a relative moving speed between the user and the obstacle according to a moving speed of the user and/or the obstacle, where the relative moving speed corresponds to an alarm threshold distance;

The terminal according to claim 10, wherein the alarm prompting method comprises: an image alarm prompt, an audible alarm prompt or a vibration alarm prompt.

The terminal according to claim 7, further comprising:

a closing unit, configured to close the infrared ranging module when the moving speed of the user is less than a set threshold and/or the setting application is closed; or

The shutdown unit is configured to close the infrared ranging module when receiving an indication that the user turns off the infrared ranging module.

13. A terminal, comprising: an input device, an output device, a memory, and a processor;

The processor is configured to perform the following steps:

Adjusting the infrared ranging module according to the tilt angle of the current relative horizontal position of the terminal, so that the detecting direction axis of the infrared ranging module is parallel to the ground; Controlling the infrared ranging module to detect a distance between an obstacle around the user and the user and/or a moving speed of the obstacle;

The terminal according to claim 13, wherein the processor performs the infrared ranging module according to the tilt angle of the current relative horizontal position of the terminal, so that the infrared ranging module is Before the step of detecting the direction of the axis parallel to the ground, the following steps are performed:

The terminal according to claim 13 or 14, wherein the infrared ranging module comprises a semi-elliptical infrared ranging sensor array and a motor, and the infrared ranging sensor array comprises a first a second and a third infrared ranging sensor, a center of the first sensor coincides with a short axis of the semi-elliptical infrared ranging sensor array, and the second and third sensors are symmetrically distributed with respect to the short axis, The center and the minor axis have an included angle of 60. The center of the motor coincides with the long axis of the semi-elliptical infrared ranging sensor array.

The terminal according to any one of claims 13-15, wherein the processor performs the according to the distance, and a moving speed of the user and/or the obstacle, to the The steps for the user to output an alarm prompt include:

The terminal according to claim 16, wherein the alarm prompting method comprises: an image alarm prompt, an audible alarm prompt or a vibration alarm prompt.

The terminal according to claim 13, wherein the processor further performs the following steps: