A finger-worn PPT presentation control method based on a flexible sensor

Abstract

A finger-wearing PPT presentation control method based on a flexible sensor belongs to the field of multimedia control.The method of the present application is as follows: a flexible fingerstall is prepared by combining a flexible sensor and a textile; a voltage acquisition module and an analog-digital conversion module in the flexible sensor acquire the resistance value change of a motion acquisition module in real time, so as to continuously monitor the finger motion and wait for the gesture activation of a user; a semiconductor module and a Bluetooth transmission module are in an intelligent sleep state; after the semiconductor module and the Bluetooth transmission module are activated, the up or down bending motion of the finger is accurately identified according to the resistance value change acquired by the motion acquisition module, so as to determine the page turning demand of the user; the page turning demand of the user is sent to a terminal through the transmission module to form up and down page turning of a PPT; after the page turning, a dynamic sleep judgment state is entered, the strain value change within a certain time is used to judge whether to enter the intelligent sleep state, and the finger-wearing PPT presentation control is realized according to the state judgment result.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of multimedia control, and particularly relates to a finger-wearable PPT presentation control method based on a flexible sensor. BACKGROUND

[0002] In various situations requiring reporting, teaching and the like, people usually adopt PPT to cooperate with narration for demonstration, which includes various pictures and texts to improve the understanding and interest of the audience. However, in the process, PPT switching is required, which often involves a mouse or a remote controller, but both of them need to be held by hand or additional actions are needed to complete PPT switching, so that the fluency of the whole process is reduced. SUMMARY

[0003] The application aims to provide a finger-wearable PPT presentation control method based on a flexible sensor, which collects finger bending through a strain gauge, follows natural finger actions and controls PPT turning pages, so as to liberate the hands of a speaker and improve the fluency of the whole presentation process.

[0004] To solve the above problems, the application provides the following technical solutions.

[0005] The application discloses a finger-wearable PPT presentation control method based on a flexible sensor, which comprises the following steps.

[0006] Step one, a flexible sensor and a textile are combined to prepare a flexible finger sleeve; the flexible sensor comprises a switch module, a constant current source module, an action collection module, a voltage collection module, an analog-digital conversion module, a semiconductor module and a Bluetooth transmission module;

[0007] Step two, the voltage collection module and the analog-digital conversion module of the flexible sensor collect the resistance value change of the action collection module in real time to keep continuous monitoring of finger actions and wait for gesture activation of a user; the semiconductor module and the Bluetooth transmission module are in an intelligent sleep state;

[0008] Step three, after the semiconductor module and the Bluetooth transmission module are activated, the resistance value change collected by the action collection module is used to accurately identify the upward or downward bending action of a finger, so as to determine the turning page demand of the user;

[0009] Step four, the turning page demand of the user is sent to a terminal through the transmission module to form up and down turning pages of PPT;

[0010] Step five, after turning pages, a dynamic sleep judgment state is entered, the resistance value change in a certain time is used to judge whether to enter an intelligent sleep state, if the sleep state is entered, steps three to five are repeated, if the sleep state is not entered, steps four to five are repeated, and the finger-wearable PPT presentation control based on the flexible sensor is realized.

[0011] Further,

[0012] The switch module is used for opening and closing of the total power supply;

[0013] The constant current source module is used for providing voltage for each module of the whole sensor;

[0014] The action acquisition module is used for detecting finger bending;

[0015] The voltage acquisition module is used for detecting voltage change caused by strain gauge resistance;

[0016] The analog-digital conversion module is used for converting the detected analog signal into digital signal;

[0017] The semiconductor module is used for comparing the collected voltage value with the threshold value, judging whether to transmit the signal and the transmission content;

[0018] The Bluetooth transmission module is used for transmitting the digital signal to the terminal.

[0019] Further, the activation method of step three is:

[0020] S21. Capture finger bending change through the action acquisition module;

[0021] S22. When the finger bending is greater than 90° and the strain gauge voltage is greater than the threshold value V1, reserve time T;

[0022] S23. Within time T, the second finger bending is greater than 60° and the strain gauge voltage is greater than the threshold value V2, activate the control state.

[0023] Further, in step three, the specific steps of determining the user's page turning requirement include:

[0024] S31. Define the initial voltage and threshold value V3;

[0025] S32. Collect voltage every T seconds, and compare the absolute value of the difference between the voltage collected at the current time t and the voltage collected at the previous time (t-1) with the threshold value V3;

[0026] S33. When the absolute value is greater than the threshold value, and the difference is positive, then turn the page up; when the absolute value is greater than the threshold value, and the difference is negative, then turn the page down.

[0027] Further, in step five, the specific steps of judging whether to enter the intelligent sleep state include:

[0028] S51. Collect the voltage after completing the up and down page turning in step four, and at the same time, judge: compare the absolute value of the difference between the voltage collected at the current time and the voltage collected at the previous time with the threshold value V3;

[0029] S52. In t2 seconds after completing the page up and down, when the absolute value is greater than the threshold value V3, and the difference is positive, then page up; when the absolute value is greater than the threshold value, and the difference is negative, then page down, and continue to cycle from S2;

[0030] S53. Otherwise, enter the intelligent sleep state and wait to be activated again.

[0031] Further, in step S22, the strain gauge voltage is compared with the threshold value V1, and the specific implementation method is: the voltage acquisition module acquires the voltage, converts the analog signal into a digital signal through the analog-to-digital conversion module, and compares the converted voltage value with the threshold value V1.

[0032] Beneficial effects:

[0033] 1. The finger-wearable PPT display control method based on a flexible sensor disclosed in the application combines a flexible sensor and a textile to prepare a flexible finger sleeve; natural bending actions of fingers are collected through a motion collection module, and the PPT page turning control is achieved by following the natural finger actions; in addition, the normal actions will not cause the PPT page turning and the energy-saving effect is achieved by adding the intelligent sleep and the threshold value. The application is convenient to wear, can free the hands of a speaker, and improves the overall fluency of a speech.

[0034] 2. The finger-wearable PPT display control method based on a flexible sensor disclosed in the application captures the finger bending changes through a motion collection module; when the finger bending is greater than 90° and the strain gauge voltage is greater than the threshold value V1, a reserved time T is provided; within the time T, when the second finger bending is greater than 60° and the strain gauge voltage is greater than the threshold value V2, the control state is activated, and the accurate control of the activated control state can be achieved.

[0035] 3. The finger-wearable PPT display control method based on a flexible sensor disclosed in the application comprises a switch module, a constant current source module, a motion collection module, a voltage acquisition module, an analog-to-digital conversion module, a semiconductor module and a Bluetooth transmission module; the motion collection module changes its resistance following the bending changes of the finger, the voltage acquisition module collects the changes of the motion collection module, the analog-to-digital conversion module converts the collected voltage data, the semiconductor module calculates the voltage data and judges whether to transmit, and the Bluetooth transmission module is used for transmitting control information to a terminal, so that the finger-wearable long-distance PPT display control can be achieved. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 It is a flowchart of the finger-wearable PPT display control method based on a flexible sensor.

[0037] Figure 2The algorithm flow chart of a finger-wearing PPT presentation control method based on a flexible sensor.

[0038] Figure 3 The structural schematic diagram of a PPT presentation control system based on a flexible sensor in an embodiment of the present application. DETAILED DESCRIPTION

[0039] The embodiments are clearly described in combination with the drawings in the examples in the present application, and the following embodiments are only part of the embodiments of the present application, and those skilled in the art can make various corresponding changes and modifications according to the concept of the present application without creative labor, and all these changes and modifications shall belong to the protection scope of the present application.

[0040] As shown in the drawings, Figure 1 The finger-wearing PPT presentation control method based on a flexible sensor disclosed in the present embodiment specifically realizes the following steps:

[0041] Step one, a flexible sensor and a textile are combined to prepare a flexible finger sleeve; the flexible sensor includes a switch module, a constant current source module, a motion acquisition module, a voltage acquisition module, a semiconductor module and a Bluetooth transmission module;

[0042] Step two, the voltage acquisition module and the analog-digital conversion module in the flexible sensor acquire the resistance value change of the motion acquisition module in real time, so as to continuously monitor the finger motion and wait for the gesture activation of the user; the semiconductor module and the Bluetooth transmission module are in an intelligent sleep state;

[0043] Step three, after activation, the up or down bending motion of the finger is accurately identified according to the resistance value change acquired by the motion acquisition module, so as to determine the page turning demand of the user;

[0044] Step four, the page turning demand of the user is sent to a terminal through the transmission module to form up and down page turning of PPT;

[0045] Step five, after page turning, a dynamic sleep judgment state is entered, and whether to enter the intelligent sleep state is judged according to the resistance value change within a certain time; if the sleep state is entered, steps three to five are repeated; if the sleep state is not entered, steps four to five are repeated.

[0046] The intelligent sleep state is that the control device continuously scans and acquires the bending degree of the finger, and does not transmit any information to the terminal through the Bluetooth device, so that the presenter can freely use the hand motion.

[0047] In a specific embodiment, the activation method in step three specifically realizes the following process:

[0048] S21. The finger bending change is captured through the motion acquisition module;

[0049] S22. When the finger bending is greater than 90° and the strain gauge voltage is greater than threshold V1, reserve time T;

[0050] S23. Within time T, the second finger bending is greater than 60° and the strain gauge voltage is greater than threshold V2, activate the control state.

[0051] The finger bending change is captured, according to the different bending degree of the strain gauge, the resistance of the strain gauge changes accordingly, the voltage change of the strain gauge is collected, each measurement value is U f , the previous measurement value is U b , ΔU is the difference between the two, as an index to describe the degree of finger bending. When ΔU is greater than threshold V1, it means that it needs to be activated; in order to prevent it from being an unintentional action, as a filter, it is verified again when ΔU is greater than threshold V2 again, and the control state is activated.

[0052] In a specific embodiment, in step three, the specific steps of determining the user's page turning requirement include:

[0053] S31. Define the initial voltage and threshold V3;

[0054] S32. Collect the voltage every T seconds, and compare the absolute value of the difference between the voltage collected at time t and the voltage collected at time (t-1) with threshold V3;

[0055] S33. When the absolute value is greater than the threshold and the difference is positive, turn the page up; when the absolute value is greater than the threshold and the difference is negative, turn the page down.

[0056] In a specific embodiment, in step four, the specific implementation mode of sending to the terminal through the transmission module includes: sending the control command to the terminal through the Bluetooth transmission module to achieve page turning of the PPT.

[0057] In a specific embodiment, in step five, the specific steps of determining whether to enter the intelligent sleep state include:

[0058] S51. Collect the voltage after completing the up and down page turning in step four, and make a judgment: compare the absolute value of the difference between the voltage collected at the current time and the voltage collected at the previous time with threshold V3;

[0059] S52. Within t2 seconds after completing the up and down page turning, when the absolute value is greater than threshold V3 and the difference is positive, turn the page up; when the absolute value is greater than the threshold and the difference is negative, turn the page down, and continue to loop from S2;

[0060] S53. Otherwise, enter the intelligent sleep state, and wait for reactivation.

[0061] In one specific embodiment, in step S22, the strain gauge voltage is compared with the threshold value V1, and the specific implementation manner comprises: the voltage acquisition module acquires the voltage, the analog signal is converted into a digital signal through the analog-digital conversion module, and the converted voltage value is compared with the threshold value V1.

[0062] Reference Figure 2 A flow chart of an algorithm of a finger-wearable PPT presentation control method based on a flexible sensor, from a sleep state to a control state and then to a sleep state, the cycle is used as the basic control algorithm of the application, and the PPT is controlled to turn pages according to the needs of the speaker.

[0063] In one specific embodiment, reference Figure 3 A structural schematic diagram of a PPT presentation control system based on a flexible sensor, the action acquisition module changes the resistance following the bending change of the finger, the voltage acquisition module acquires the change of the action acquisition module, the analog-digital conversion module converts the acquired voltage data, the data processing module calculates the voltage data and judges whether to transmit, and the Bluetooth transmission module is used for transmitting control information to the terminal.

[0064] The above description of the application should not be considered as limiting the application. It is obvious for those skilled in the art that the application is not limited to the above examples, which are exemplary examples. Therefore, modifications made without departing from the basic innovation or other features of the application are included in the scope of the application defined by the claims.

Claims

1. A finger-wearable PPT presentation control method based on flexible sensors, characterized in that: It comprises the following steps, Step one, the flexible sensor and textile are combined to prepare a flexible finger sleeve; the flexible sensor comprises a switch module, a constant current source module, an action acquisition module, a voltage acquisition module, an analog-digital conversion module, a semiconductor module and a Bluetooth transmission module; Step two, the voltage acquisition module and the analog-digital conversion module in the flexible sensor acquire the resistance value change of the action acquisition module in real time, so as to continuously monitor the finger action and wait for the gesture activation of the user; the semiconductor module and the Bluetooth transmission module are in an intelligent sleep state; Step three, after the semiconductor module and the Bluetooth transmission module are activated, the up or down bending action of the finger is accurately identified according to the resistance value change acquired by the action acquisition module, so as to determine the page turning demand of the user; The activation method of step three is: S21. The finger bending change is captured by the action acquisition module; S22. When the finger bending is greater than 90° and the strain gauge voltage is greater than the threshold value V1, a reserved time T is provided; S23. Within the time T, the second finger bending greater than 60° and the strain gauge voltage greater than the threshold value V2 are provided, and the control state is activated; The specific steps for determining the page turning requirement of the user include: S31. The initial voltage and the threshold value V3 are defined; S32. The voltage is acquired every T seconds, the voltage acquired at the current t time is subtracted from the voltage acquired at the (t-1) time, and the absolute value of the difference is compared with the threshold value V3; S33. When the absolute value is greater than the threshold value and the difference is positive, the page is turned up; when the absolute value is greater than the threshold value and the difference is negative, the page is turned down Step four, the page turning demand of the user is sent to the terminal through the transmission module to form up and down page turning of the PPT; Step five, after the page turning, a dynamic sleep judgment state is entered, the change of the resistance value within a certain time is used to judge whether to enter the intelligent sleep state, if the sleep state is entered, steps three to five are repeated, if the sleep state is not entered, steps four to five are repeated, and the finger wearable PPT presentation control based on the flexible sensor is realized; The specific steps for judging whether to enter the intelligent sleep state include: S51. The voltage after the up and down page turning in step four is acquired, and the voltage acquired at the current time is subtracted from the voltage acquired at the previous time, and the absolute value of the difference is compared with the threshold value V3; S52. Within t2 seconds after the up and down page turning, when the absolute value is greater than the threshold value V3 and the difference is positive, the page is turned up; when the absolute value is greater than the threshold value and the difference is negative, the page is turned down, and the cycle continues from S2; S53. Otherwise, the intelligent sleep state is entered, and waiting for reactivation.

2. The finger wearable PPT presentation control method based on the flexible sensor according to claim 1, characterized in that: The switch module is used for opening and closing the total power supply; The constant current source module is used for providing voltage for each module of the entire sensor; The action acquisition module is used for detecting the finger bending; The voltage acquisition module is used for detecting the voltage change caused by the strain gauge resistance; The analog-digital conversion module is used for converting the detected analog signal into a digital signal; The semiconductor module is used for comparing the acquired voltage value with the threshold value, and judging whether to transmit the signal and the transmission content; The Bluetooth transmission module is used for transmitting the digital signal to a terminal. 3.The flexible sensor-based finger-worn PPT presentation control method of claim 1, wherein: In step S22, the strain gauge voltage is compared with the threshold V1, and the specific implementation method is that the voltage acquisition module acquires the voltage, converts the analog signal into a digital signal through the analog-digital conversion module, and compares the converted voltage value with the threshold V1.

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