CN113076005A - Detection method for activating computer screen lock - Google Patents
Detection method for activating computer screen lock Download PDFInfo
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- CN113076005A CN113076005A CN202110399713.XA CN202110399713A CN113076005A CN 113076005 A CN113076005 A CN 113076005A CN 202110399713 A CN202110399713 A CN 202110399713A CN 113076005 A CN113076005 A CN 113076005A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/011—Arrangements for interaction with the human body, e.g. for user immersion in virtual reality
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
- G01S15/06—Systems determining the position data of a target
- G01S15/08—Systems for measuring distance only
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/3058—Monitoring arrangements for monitoring environmental properties or parameters of the computing system or of the computing system component, e.g. monitoring of power, currents, temperature, humidity, position, vibrations
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Abstract
The invention relates to a detection method for activating a computer screen lock screen, which comprises the following steps of detecting whether a target exists in a detection range through an ultrasonic ranging module; if a target exists in the detection range and the distance of the target does not change within a plurality of seconds, judging that the target is not a human body, and transmitting a signal to a computer by the ultrasonic ranging module to enable the computer to automatically lock the screen; if a target exists in the detection range and the distance of the target changes within a plurality of seconds, the target is judged to be a human body, and the computer screen is normally used; if no target exists in the detection range, the ultrasonic ranging module transmits a signal to the computer, and the computer automatically locks the screen. The detection method for activating the screen locking of the computer screen can carry out time delay processing and judgment of various conditions according to the signal of the ultrasonic ranging module, and realizes the functions of direct judgment, static judgment and screen locking delay.
Description
Technical Field
The invention relates to the technical field of computer screen locking, in particular to a detection method for activating a computer screen locking.
Background
Sensitive information exists in computers of many units or individuals and even screen display, and the sensitive information cannot be acquired by irrelevant people at will. Therefore, no matter Windows, Macos or Android is adopted in the computer system, a screen locking button is provided for locking the screen when the host leaves, and information leakage is avoided; aiming at the computer screen locking, a user can realize the automatic screen locking by manually operating a mouse or manually combining a keyboard shortcut key with 'WIN' + 'L' or waiting for the computer to start an automatic sleep mode (the computer is automatically locked when no operation is detected after a preset time period). However, in some cases, the computer user is in negligence, and the screen is not locked in time when the user leaves, so that computer information is exposed to the outside, and potential safety hazards are brought.
Aiming at the hidden trouble, the prior art provides a Bluetooth solution and an infrared induction solution;
the bluetooth solution detects the owner's departure and thus locks the screen after the owner leaves, but because the distance detectable by bluetooth is too far, the screen may not be locked even when the owner has entered another room, which may be too far from the computer.
The infrared induction solution is greatly influenced by the working environment, and the accuracy of the machine is influenced if the indoor light is too strong. The color of the clothes worn by the person to be measured has great influence, and the measurement cannot be carried out if the person wears black clothes. The measurement angle is too small, and the object may be lost if the sitting posture of the person to be measured changes. Whether the surface of the measured object is flat or not also influences the measurement. Automatic screen locking equipment based on infrared switch is very loaded down with trivial details, very restricts surveyed personnel's activity.
Therefore, it is desirable to provide a detection method for activating the lock screen of the computer screen.
Disclosure of Invention
Based on this, the present invention is directed to overcome the disadvantages and drawbacks of the prior art and to provide a method for detecting activation of a lock on a computer screen.
A detection method for activating a lock screen of a computer screen comprises the following steps,
detecting whether a target exists in a detection range through an ultrasonic ranging module;
if a target exists in the detection range and the distance of the target does not change within a plurality of seconds, judging that the target is not a human body, and transmitting a signal to a computer by the ultrasonic ranging module to enable the computer to automatically lock the screen;
if a target exists in the detection range and the distance of the target changes within a plurality of seconds, the target is judged to be a human body, and the computer screen is normally used;
if no target exists in the detection range, the ultrasonic ranging module transmits a signal to the computer, and the computer automatically locks the screen.
The detection method for activating the screen locking of the computer screen can carry out time delay processing and judgment of various conditions according to the signal of the ultrasonic ranging module;
the invention realizes direct judgment, namely, no target exists in the detection range, and transmits a signal to the computer through the signal transmission module, so that the computer automatically locks the screen;
the invention realizes the static judgment, namely when a computer user exceeds the working range, the screen can be locked even if the interference of targets such as a chair back and the like exists;
the invention realizes delayed screen locking and prevents the computer user from moving the body temporarily to cause misjudgment.
Further, if a target exists in the detection range, the distance of the target continuously changes, or the distance of the target continuously changes after being unchanged within a plurality of seconds, the target is judged to be a human body, and the computer screen is normally used;
if a target exists in the detection range and the distance change of the target exceeds 200cm within a plurality of seconds, the ultrasonic ranging module transmits a signal to the computer, and the computer automatically locks the screen.
The technical scheme has the advantages that the accuracy and the stability of the detection method are improved by subdividing the signal data condition of the ultrasonic ranging module, and the condition of false triggering is avoided.
Further, when the target is judged to be a human body, the data of the ultrasonic ranging module is reset, and whether the target exists in the detection range is detected again.
The technical scheme has the advantages that when the target is judged to be a human body, the data of the ultrasonic ranging module needs to be reset, and then the detection and the judgment are carried out again according to the set delay time, so that the accuracy and the stability of the detection method are improved, and the condition of false triggering is avoided.
Furthermore, after the computer is locked, the ultrasonic ranging module stops working.
The beneficial effect who adopts above-mentioned further scheme is that, behind the computer lock screen, ultrasonic ranging module stop work, can save the electric energy, reduces ultrasonic ranging module's live time simultaneously, improves ultrasonic ranging module's life-span.
Further, if a target exists in the detection range and the distance of the target is not changed within 5 seconds, the target is judged not to be a human body, the ultrasonic ranging module transmits a signal to a computer, and the computer automatically locks the screen;
if the target exists in the detection range and the distance of the target changes within 5 seconds, the target is judged to be a human body, and the computer screen is normally used;
if a target exists in the detection range and the distance change of the target exceeds 200cm within 5 seconds, the ultrasonic ranging module transmits a signal to the computer and enables the computer to automatically lock the screen.
The beneficial effect of adopting the further scheme is that the time for delay processing is set within 5 seconds, so that the situation that a computer user temporarily moves the body to cause misjudgment can be effectively prevented.
Further, the device also comprises a protective shell; the ultrasonic ranging module is arranged in the protective shell; the surface of the protective shell is provided with a positioning hole, and an induction head of the ultrasonic ranging module is arranged in the positioning hole; the computer screen locking device further comprises a signal transmission module, wherein the signal transmission module is used for triggering a combined key of 'WIN' and 'L' of the computer to enable the computer to enter a screen locking state; the signal transmission module is in wired connection or wireless connection with the ultrasonic ranging module; the signal transmission module is connected with a computer in a wired or wireless way.
The signal transmission module is used for transmitting a signal of the ultrasonic ranging module to the signal transmission module, determining that a user is not in a detection range after judgment, simulating the signal transmission module into a keyboard, sending a screen locking combination key to a computer through the simulated keyboard, and triggering a combination key of 'WIN' and 'L' of the computer to lock a screen of the computer; according to the invention, after the computer user leaves, even if the screen is forgotten to be locked, the detection device can also find that the screen is locked, so that measures are taken to lock the screen in time and protect sensitive information; the protective shell can protect various internal hardware, including the ultrasonic ranging module; the signal transmission module, the ultrasonic ranging module and the computer can realize signal transmission in a wired or wireless connection mode, and the wireless signal transmission can be realized in a Bluetooth mode and the like, which are not described herein again.
Furthermore, the detection distance range of the induction head of the ultrasonic ranging module is 2-200 cm; the beam angle of the induction head of the ultrasonic ranging module is 40 degrees.
The technical scheme has the advantages that the detection range of the induction head of the ultrasonic ranging module is 2-200cm, the beam angle of the induction head of the ultrasonic ranging module is 40 degrees, the distance range of a user in front of a computer can be conveniently detected, and the human engineering design is met.
Further, the USB plug is also included; the signal transmission module is arranged in the protective shell; the USB plug is electrically connected with the signal transmission module; the USB plug can be connected with a computer; and the USB plug is provided with a USB expansion interface.
The technical scheme has the advantages that the wired connection between the signal transmission module and the computer can be realized by arranging the USB plug, and the USB plug can be pulled out without occupying a USB interface of the computer when the detection device is not used; because the computer of sensitive departments such as bank insurance and the like only provides one USB port, the USB plug is provided with the USB expansion interface, and other USB equipment can be accessed after the USB plug of the detection device is accessed.
Further, the device also comprises a controller and a timer; the controller and the timer are both arranged in the protective shell, and the controller is simultaneously electrically connected with the timer and the signal transmission module;
the power supply also comprises a power supply switch; the power switch is arranged on the protective shell and is electrically connected with the controller;
the device also comprises a manual screen locking button; the manual screen locking button is arranged on the protective shell and is electrically connected with the controller; the manual screen locking button is used for triggering the signal transmission module to further trigger a combined key of WIN and L of the computer to enable the computer to enter a screen locking state;
the device also comprises a fixing piece; the fixing piece is arranged on the protective shell and used for fixing the protective shell on a computer screen or other positions.
The technical scheme has the advantages that the time delay processing and the judgment of various conditions can be carried out according to the signals of the ultrasonic ranging module by arranging the controller and the timer; by arranging the power switch, the power switch of the detection device can be independently controlled to be switched on and switched off, so that the detection device can be switched on according to the requirements of users; by arranging the manual screen locking button, when a user needs to directly leave the computer, the user can directly press the manual screen locking button to quickly and conveniently enter the computer into a screen locking state; by arranging the fixing piece, the protective shell can be conveniently arranged at a proper position; the fixing member can adopt the forms of a clamping mechanism, a vacuum chuck, an adhesive sticker and the like according to the needs of users, and the details are not repeated herein.
For a better understanding and practice, the invention is described in detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic flow chart illustrating a method for detecting activation of a lock screen of a computer screen according to the present invention;
FIG. 2 is a schematic circuit diagram illustrating a method for activating a computer screen lock detection according to the present invention;
FIG. 3 is a schematic structural diagram of the protective housing and the USB plug for activating the lock screen of the computer screen according to the present invention.
In the figure: 10. an ultrasonic ranging module; 20. a protective housing; 21. positioning holes; 30. a signal transmission module; 40. a USB plug; 41. a USB expansion interface; 50. a controller; 60. a timer; 70. a power switch; 80. and a manual screen locking button.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It will be understood that in the description of the present application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application. The terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, i.e. a feature defined as "first", "second" may explicitly or implicitly include one or more of such features. Further, unless otherwise specified, "a plurality" means two or more.
It should be noted that, in the description of the present application, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Referring to fig. 1 to 3, a detection method for activating a lock screen of a computer screen according to the present embodiment includes the following steps of detecting whether a target exists in a detection range through an ultrasonic ranging module 10;
if a target exists in the detection range and the distance of the target does not change within 5 seconds, the target is judged not to be a human body, the ultrasonic ranging module 10 transmits a signal to a computer, and the computer automatically locks the screen;
if the target exists in the detection range and the distance of the target changes within 5 seconds, the target is judged to be a human body, and the computer screen is normally used; specifically, if a target exists in the detection range, the distance of the target continuously changes, or the distance of the target continuously changes after the distance of the target is unchanged within 4 seconds, the target is judged to be a human body, and the computer screen is normally used;
if a target exists in the detection range and the distance change of the target exceeds 200cm within 5 seconds, the ultrasonic ranging module 10 transmits a signal to a computer and enables the computer to automatically lock the screen;
if no target exists in the detection range, the ultrasonic ranging module 10 transmits a signal to a computer, and the computer automatically locks the screen.
In the preferred embodiment, when it is determined that the target is a human body, the ultrasonic ranging module 10 resets data and re-detects whether there is a target in the detection range.
In the preferred embodiment, after the computer is locked, the ultrasonic ranging module 10 stops working.
The embodiment also provides a detection device for activating the screen locking of the computer screen to realize the detection method, and the detection device comprises an ultrasonic ranging module 10, a protective shell 20, a signal transmission module 30, a USB plug 40, a controller 50, a timer 60, a power switch 70, a manual screen locking button 80 and a fixing member (not shown);
specifically, the detection distance range of the induction head of the ultrasonic ranging module 10 is 2-200 cm; the beam angle of the induction head of the ultrasonic ranging module 10 is 40 degrees;
specifically, the ultrasonic ranging module 10 is arranged in the protective housing 20; a positioning hole 21 is formed in the surface of the protective shell 20, and an induction head of the ultrasonic ranging module 10 is arranged in the positioning hole 21;
specifically, the signal transmission module 30 is used for triggering a combination key of "WIN" and "L" of the computer, so that the computer enters a screen locking state; the signal transmission module 30 is connected with the ultrasonic ranging module 10 in a wired or wireless manner; the signal transmission module 30 is connected with a computer in a wired or wireless way; preferably, the signal transmission module 30 is disposed in the protective housing 20 and is in wired connection with the ultrasonic ranging module 10; the USB plug 40 is electrically connected with the signal transmission module 30 and is in wired connection; the USB plug 40 can be connected with a computer; the USB plug 40 is provided with a USB expansion interface 41.
Specifically, the controller 50 and the timer 60 are both disposed in the protective housing 20, and the controller 50 is electrically connected to the timer 60 and the signal transmission module 30 at the same time; the controller 50 is combined with the timer 60, and is used for analyzing the detection data of the ultrasonic ranging module 10, and further performing signal judgment and delay judgment;
specifically, the power switch 70 is disposed on the protective housing 20, and the power switch 70 is electrically connected to the controller 50;
specifically, the manual screen locking button 80 is arranged on the protective shell 20 and electrically connected with the controller 50; the manual screen locking button 80 is used for triggering the signal transmission module 30, and further triggering a combined key of 'WIN' and 'L' of the computer, so that the computer enters a screen locking state;
specifically, the fixing member is disposed on the protective casing 20, and the fixing member is used for fixing the protective casing 20 on a computer screen or other positions; the fixing member can adopt the forms of a clamping mechanism, a vacuum chuck, an adhesive sticker and the like according to the needs of users, and the details are not repeated herein.
The specific working principle of the detection method is described below with reference to the detection device:
firstly, detecting whether a target exists in a detection range through an ultrasonic ranging module 10;
if the ultrasonic ranging module 10 detects that a target is in the detection range and the distance of the target detected by combining the timer 60 is not changed within 5 seconds, the controller 50 judges that the target is not a human body, and then the signal transmission module 30 transmits a signal to a computer through the USB plug 40, and the computer automatically locks the screen;
if the ultrasonic ranging module 10 detects that a target exists in the detection range and the distance of the target detected by combining the timer 60 changes within 5 seconds, the target is judged to be a human body, and the computer screen is normally used;
if the ultrasonic ranging module 10 detects that a target exists in the detection range and the distance change of the target detected by combining the timer 60 exceeds 200cm in 5 seconds, the controller 50 judges that the target leaves the computer, and then the signal transmission module 30 transmits a signal to the computer through the USB plug 40, so that the computer automatically locks the screen;
if the ultrasonic ranging module 10 does not detect a target within the detection range, the controller 50 determines that there is no target, and then the signal transmission module 30 transmits a signal to the computer through the USB plug 40, and the computer automatically locks the screen.
When it is determined that the target is a human body, the controller 50 resets the data of the ultrasonic ranging module 10 and reacquires the detection data of the ultrasonic ranging module 10 within the detection range.
Compared with the prior art, the invention can carry out time delay processing and judgment of various conditions according to the signal of the ultrasonic ranging module; the invention realizes direct judgment, namely, no target exists in the detection range, and transmits a signal to the computer through the signal transmission module, so that the computer automatically locks the screen; the invention realizes the static judgment, namely when a computer user exceeds the working range, the screen can be locked even if the interference of targets such as a chair back and the like exists; the invention realizes delayed screen locking and prevents the computer user from moving the body temporarily to cause misjudgment.
In addition, the invention also has the following beneficial effects:
by subdividing the signal data condition of the ultrasonic ranging module, the accuracy and the stability of the detection method are improved, and the condition of false triggering is avoided.
When the target is judged to be a human body, the data of the ultrasonic ranging module needs to be reset, and then detection and judgment are carried out again according to the set delay time, so that the accuracy and the stability of the detection method are improved, and the condition of false triggering is avoided.
After the computer is locked, the ultrasonic ranging module stops working, so that electric energy can be saved, the service time of the ultrasonic ranging module is shortened, and the service life of the ultrasonic ranging module is prolonged.
The time for delay processing is set within 5 seconds, so that the situation that the body of a computer user is moved temporarily to cause misjudgment can be effectively prevented, and the user can also make other settings for the time for delay processing according to the requirements.
The protective housing of the present invention protects various internal hardware, including the ultrasonic ranging module.
The detection range of the induction head of the ultrasonic ranging module is 2-200cm, the beam angle of the induction head of the ultrasonic ranging module is 40 degrees, the distance range of a user in front of a computer can be conveniently detected, and the human engineering design is met.
Through the arrangement of the USB plug, wired connection between the signal transmission module and the computer can be realized, and the USB plug can be pulled out without occupying a USB interface of the computer when the detection device is not used; because the computer of sensitive departments such as bank insurance and the like only provides one USB port, the USB plug is provided with the USB expansion interface, and other USB equipment can be accessed after the USB plug of the detection device is accessed.
By arranging the power switch, the power switch of the detection device can be independently controlled to be switched on and switched off, so that the detection device can be switched on according to the requirements of users; through setting up manual lock screen button, need directly leave the computer when the user, can directly press manual lock screen button, swiftly get into the lock screen state with the computer, convenient and fast.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (10)
1. A detection method for activating a lock screen of a computer screen is characterized by comprising the following steps,
detecting whether a target exists in a detection range through an ultrasonic ranging module (10);
if a target exists in the detection range and the distance of the target does not change within a plurality of seconds, the target is judged not to be a human body, the ultrasonic ranging module (10) transmits a signal to a computer, and the computer automatically locks the screen;
if a target exists in the detection range and the distance of the target changes within a plurality of seconds, the target is judged to be a human body, and the computer screen is normally used;
if no target exists in the detection range, the ultrasonic ranging module (10) transmits a signal to a computer, and the computer automatically locks the screen.
2. The method as claimed in claim 1, wherein if there is a target in the detection range, the distance of the target is continuously changed, or the distance of the target is continuously changed after the distance is not changed for several seconds, the target is determined to be a human body, and the computer screen is normally used.
3. The method for detecting the activation of the lock screen of the computer screen according to claim 2, wherein if there is a target in the detection range and the distance variation of the target exceeds 200cm within several seconds, the ultrasonic ranging module (10) transmits a signal to the computer and causes the computer to automatically lock the screen.
4. The method for detecting the activation of the lock screen of the computer screen according to claim 3, wherein when the object is determined to be a human body, the ultrasonic ranging module (10) resets the data and detects whether the object exists again in the detection range.
5. The method for detecting the activation of the lock screen of the computer screen according to claim 3, wherein the ultrasonic ranging module (10) stops working after the computer is locked.
6. The method for detecting the activation of a computer screen lock according to claim 3,
if a target exists in the detection range and the distance of the target does not change within 5 seconds, the target is judged not to be a human body, the ultrasonic ranging module (10) transmits a signal to a computer, and the computer automatically locks the screen;
if the target exists in the detection range and the distance of the target changes within 5 seconds, the target is judged to be a human body, and the computer screen is normally used;
if a target exists in the detection range and the distance change of the target exceeds 200cm within 5 seconds, the ultrasonic ranging module (10) transmits a signal to a computer and enables the computer to automatically lock the screen.
7. The method for detecting the activation of a computer screen lock according to any one of claims 1 to 6, further comprising a protective housing (20); the ultrasonic ranging module (10) is arranged in the protective shell (20); a positioning hole (21) is formed in the surface of the protective shell (20), and an induction head of the ultrasonic ranging module (10) is arranged in the positioning hole (21); the computer screen locking device is characterized by also comprising a signal transmission module (30), wherein the signal transmission module (30) is used for triggering a combined key of 'WIN' and 'L' of the computer to enable the computer to enter a screen locking state; the signal transmission module (30) is in wired connection or wireless connection with the ultrasonic ranging module (10); the signal transmission module (30) is in wired connection or wireless connection with a computer.
8. The method for detecting the activation of the computer screen lock screen according to claim 7, wherein the detection distance range of the induction head of the ultrasonic ranging module (10) is 2-200 cm; the beam angle of an induction head of the ultrasonic ranging module (10) is 40 degrees.
9. The method for detecting the activation of a computer screen lock according to claim 7, further comprising a USB plug (40); the signal transmission module (30) is arranged in the protective shell (20); the USB plug (40) is electrically connected with the signal transmission module (30); the USB plug (40) can be connected with a computer; and a USB expansion interface (41) is arranged on the USB plug (40).
10. The method of claim 7, further comprising a controller (50) and a timer (60); the controller (50) and the timer (60) are both arranged in the protective shell (20), and the controller (50) is electrically connected with the timer (60) and the signal transmission module (30) at the same time;
also includes a power switch (70); the power switch (70) is arranged on the protective shell (20), and the power switch (70) is electrically connected with the controller (50);
the device also comprises a manual screen locking button (80); the manual screen locking button (80) is arranged on the protective shell (20) and is electrically connected with the controller (50); the manual screen locking button (80) is used for triggering the signal transmission module (30) so as to trigger a combined key of 'WIN' and 'L' of the computer and enable the computer to enter a screen locking state;
the device also comprises a fixing piece; the fixing piece is arranged on the protective shell (20) and used for fixing the protective shell (20) on a computer screen or other positions.
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