CN109669577B - Underwater gesture interaction method - Google Patents

Underwater gesture interaction method Download PDF

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Publication number
CN109669577B
CN109669577B CN201811590269.4A CN201811590269A CN109669577B CN 109669577 B CN109669577 B CN 109669577B CN 201811590269 A CN201811590269 A CN 201811590269A CN 109669577 B CN109669577 B CN 109669577B
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control unit
amplification
signal
underwater
gesture interaction
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CN109669577A (en
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敬波
杨超
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Chongqing Mine Technologies Co ltd
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Chongqing Mine Technologies Co ltd
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input 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
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416Control or interface arrangements specially adapted for digitisers
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input 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
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input 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
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • User Interface Of Digital Computer (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

The invention provides an underwater gesture interaction method which is based on an execution unit and a control unit and is also provided with a waterproof cavity; the waterproof cavity comprises a shell and a light-transmitting cover, the light-transmitting cover is buckled with the shell, and a gap between the light-transmitting cover and the shell is filled with waterproof colloid; the control unit is arranged in the waterproof cavity, and an infrared sensor is also arranged in the waterproof cavity; the execution unit is arranged in the waterproof cavity and electrically connected with the control unit, or arranged outside the waterproof cavity and in communication connection with the control unit; the waterproof cavity is provided with a light-transmitting area, and the sensing end of the infrared sensor faces one side of the light-transmitting area so as to capture gesture interaction actions and trigger the control unit to control the action or state change of the execution unit. Compared with the prior art, the underwater interaction sensitivity is improved, the hardware design is simplified, and the power consumption and the cost are reduced.

Description

Underwater gesture interaction method
Technical Field
The invention relates to an interaction technology, in particular to an underwater gesture interaction method.
Background
With the progress of technology, more and more interactive products appear in the life of people and are applied to more fields, for example, traditional electronic products can realize touch interaction, and along with the change of quality requirements and application scenes, the electronic products are required to realize waterproofness and can normally work in an underwater environment; under the general condition, as long as enough waterproof treatment is done to electronic products, but there are some other use problems in practice, for example, a capacitive screen which can conveniently work under the original water-free environment has a sensitivity change problem in the underwater environment, and touch interaction is done underwater to reduce the use experience of a user to a certain extent, and in order to solve the problem, it is necessary to conduct deep research.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an underwater gesture interaction method, aiming at optimizing the triggering and recognition processing problems of underwater control.
In order to achieve the purpose, the invention adopts the following technical scheme:
an underwater gesture interaction method is based on an execution unit and a control unit and is further provided with a waterproof cavity; the control unit is arranged in the waterproof cavity, and an infrared sensor is also arranged in the waterproof cavity; the execution unit is arranged in the waterproof cavity and electrically connected with the control unit, or arranged outside the waterproof cavity and in communication connection with the control unit; a light-transmitting area is arranged on the waterproof cavity, and the sensing end of the infrared sensor faces one side of the light-transmitting area so as to capture gesture interaction actions and trigger the control unit to control the action or state change of the execution unit; the signal sensed by the infrared sensor comprises the following processing steps or processing methods:
A. the induction signal of the infrared sensor is transmitted to the control unit after being sequentially subjected to primary amplification, band-pass filtering, secondary amplification and analog-to-digital conversion;
B. the control unit repeatedly reads and processes the signals after the analog-digital conversion;
C. in the step A, the amplification factor of the primary amplification and/or the passband gain of the bandpass filtering can be actively switched, and a switching control signal for the active switching comes from the control unit; after the amplification factor of the first-stage amplification and/or the passband gain of the bandpass filtering are switched, the strength of the received signal is changed after the analog-to-digital conversion processing;
D. the control unit sends out one or more switching control signals after reading the signal transmitted by the infrared sensor for one time, so as to control the amplification factor of the primary amplification and/or the passband gain switching of the bandpass filtering, and reads the signal transmitted by the analog-to-digital conversion again after sending out the switching control signal;
E. the control unit continuously reads the output signals of the analog-digital conversion, identifies the signal change difference, and judges the distance between the objects detected by the infrared sensor or the distance interval according to the feedback signal difference or the signal strength;
F. the control unit outputs signals to control the action or state change of the execution unit.
Further, the first-stage amplification comprises transimpedance amplification or programmable gain amplification; the second amplification in step a comprises differential amplification.
Further, the output signal of the control unit is used as a feedback signal or an input signal to participate in the secondary amplification processing process in the step A; and D/A conversion processing is carried out on the output signal of the control unit participating in the secondary amplification processing in the step A.
Further, waterproof cavity contains casing and printing opacity cover, printing opacity cover and casing lock installation, the clearance part packing of printing opacity cover and casing has the waterproof colloid.
Furthermore, the number of the infrared sensors comprises a plurality of infrared sensors, the working state of each infrared sensor can be switched on and off, and the switching control signals are correspondingly controlled through the output of the control unit.
Furthermore, the outputs of the infrared sensors are connected in parallel, and the control unit sends out conversion control signals in a time-sharing manner, so that the infrared sensors correspondingly output to the same primary amplification stage in a time-division multiplexing manner for signal processing.
Furthermore, in the step D, the reading time interval of the output signal of the two adjacent analog-to-digital conversions before and after the switching control signal is sent out by the control unit does not exceed 10 ms.
Further, in step D, the time interval between two adjacent times of sending out the switching control signal by the control unit is between 30ms and 500ms, or not more than 5 ms.
Further, the execution unit comprises one of a display unit, an illumination unit and a mechanical motion unit.
Further, the execution unit is an LED lamp, and the infrared sensor is installed adjacent to the LED lamp which is controlled correspondingly.
The invention utilizes the fact that the traditional touch sensing mode can be separated in the underwater infrared light sensing mode, the distance of underwater gesture interaction is increased, the infrared light is light in nature, the light sensing sensitivity is far higher than the capacitance sensing sensitivity, and the action recognition accuracy of underwater interaction is facilitated; in addition, because the action time of underwater gesture interaction is far longer than the processing time of the control unit (the minimum time unit of the traditional microprocessor does not exceed microsecond level), the control unit actively adjusts signal processing parameters or selects a signal processing mode (such as switching the amplification factor of primary amplification processing) to distinguish the strength and/or frequency of the sensing signal; in addition, the invention is different from the passive use of sensing detection transmission signals, realizes the time division multiplexing of a plurality of infrared sensors by using conversion control signals sent by the control unit, simplifies the hardware design and reduces the power consumption and the cost.
Compared with the prior art, the invention has the following beneficial effects:
the method has the advantages that a touch interaction mode is eliminated, interaction experience is improved, and the recognition rate and the accuracy are higher;
secondly, the sensing signals are processed into ternary parameters or multivariate parameters with distance or distance intervals by using traditional on-off binary parameters, and the combination mode is far higher than that of the traditional triggering combination of infrared sensing, so that the interactive control mode is enriched;
and signal processing channels of a plurality of infrared sensors are greatly reduced, and the integrated design is facilitated.
Drawings
Fig. 1 is a schematic block diagram of an embodiment.
Fig. 2 is a schematic structural diagram of a waterproof chamber according to an embodiment.
Detailed Description
The technical solution of the present invention is further explained with reference to the drawings and the embodiments.
As shown in fig. 1 and 2, an underwater gesture interaction method is based on an execution unit and a control unit, and is further provided with a waterproof cavity; the waterproof cavity comprises a shell 1 and a light-transmitting cover 2, the light-transmitting cover 2 is buckled with the shell 1, and a gap between the light-transmitting cover and the shell is filled with waterproof colloid; the control unit is arranged in the waterproof cavity, and an infrared sensor is also arranged in the waterproof cavity; the execution unit is arranged in the waterproof cavity and electrically connected with the control unit, or arranged outside the waterproof cavity and in communication connection with the control unit; a light-transmitting area is arranged on the waterproof cavity, and the sensing end of the infrared sensor faces one side of the light-transmitting area so as to capture gesture interaction actions and trigger the control unit to control the action or state change of the execution unit; the signal sensed by the infrared sensor comprises the following processing steps or processing methods:
A. the induction signal of the infrared sensor is transmitted to the control unit after being sequentially subjected to primary amplification, band-pass filtering, secondary amplification and analog-to-digital conversion;
B. the control unit repeatedly reads and processes the signals after the analog-digital conversion;
C. in the step A, the amplification factor of the primary amplification and/or the passband gain of the bandpass filtering can be actively switched, and a switching control signal for the active switching comes from the control unit; after the amplification factor of the first-stage amplification and/or the passband gain of the bandpass filtering are switched, the strength of the received signal is changed after the analog-to-digital conversion processing;
D. the control unit sends out one or more switching control signals after reading the signal transmitted by the infrared sensor for one time, so as to control the amplification factor of the primary amplification and/or the passband gain switching of the bandpass filtering, and reads the signal transmitted by the analog-to-digital conversion again after sending out the switching control signal;
E. the control unit continuously reads the output signals of the analog-digital conversion, identifies the signal change difference, and judges the distance between the objects detected by the infrared sensor or the distance interval according to the feedback signal difference or the signal strength;
F. the control unit outputs signals to control the action or state change of the execution unit.
In the step a, the first-stage amplification includes transimpedance amplification or programmable gain amplification; the two-stage amplification includes differential amplification. The amplification factor of the feedback signal of the infrared sensor can be effectively increased through two-stage amplification, the output of processing signals with different intensities can be realized for the signals sensed by the infrared sensor for objects or hands at the same distance through the amplification factor switching of one-stage amplification and/or the passband gain switching of bandpass filtering, and the control unit can identify the magnitude of the processing signals through the amplification ratio switching after the parameters of the corresponding amplification ratio are set in a program due to the active controllability of the switching trigger of the amplification factor, thereby being beneficial to the elimination of interference signals; and for the sensing signals with different distances, the strength of the sensing signal source is different, the processing signal is transmitted to the control unit after being subjected to analog-to-digital conversion, and the control unit identifies the magnitude value or the magnitude interval of the sensing signal source, so that the distance of the sensing object is judged, and the original binary sensing control is changed into ternary parameter sensing control including distance identification. In this embodiment, the switching of the amplification factor of the first-stage amplification and the switching of the pass band gain of the band-pass filtering are implemented by selecting different operational elements through analog switches, for example, a plurality of feedback resistors related to the amplification factor are provided, the resistance values of the feedback resistors are different, and the control unit switches the corresponding feedback resistors to be connected to the transimpedance amplification circuit or the band-pass filtering circuit through the selection of the analog switches.
In the step D, the reading time interval of the output signals of two adjacent analog-to-digital conversions before and after the switching control signal is sent by the control unit does not exceed 10ms, so that even if the object is in a moving state, the signal received by the control unit in the time period can still be considered as the sensing of the infrared sensor on the object at the same distance.
The output signal of the control unit is used as a feedback signal or an input signal to participate in the secondary amplification processing process in the step A; and D/A conversion processing is carried out on the output signal of the control unit participating in the secondary amplification processing in the step A. In this embodiment, the second-stage amplification is differential amplification based on an operational amplifier, in which the non-inverting input terminal is connected to the output of the band-pass filter, the inverting input terminal is connected to the feedback signal correspondingly output by the control unit, the feedback signal may be processed by an independent digital-to-analog converter, and part of the control units include a digital-to-analog conversion interface, and the control unit having the digital-to-analog conversion interface is directly connected to the inverting input terminal. D, the time interval of the switching control signals sent by the control unit twice in the adjacent time is within 30-500 ms or less than 5ms, when the object sensed by the infrared sensor moves, the time interval can ensure that the moving object generates a certain movement distance, the strength of the signals sensed by the infrared sensor is greatly different, and the identification performance of the distance interval and the identification performance of the movement trend are better after trans-impedance amplification and band-pass filtering; time intervals within 5ms may also be switched through fast cycles to facilitate periodic identification.
The number of the infrared sensors comprises a plurality of infrared sensors, the working states of the infrared sensors can be switched on and off, conversion control signals are correspondingly controlled through the outputs of the control unit, the control from the control unit to the sensors is usually connected through sensor driving, in the embodiment, the sensor driving can adopt a plurality of transistor switch circuits, one transistor switch circuit correspondingly drives one infrared sensor, the infrared sensors are connected with a power supply loop through the transistor switch circuit, and the control ends of the transistor switch circuits are connected with the outputs of the control unit. The outputs of the plurality of infrared sensors are connected in parallel, and the plurality of infrared sensors perform conversion output in a time division multiplexing mode. In fig. 1, two paths of infrared sensors are taken as an illustration, and the number of infrared sensors can be increased in practical use; through the setting of a plurality of infrared sensor, can discern the displacement of object, combine aforementioned distance discernment, greatly richened the means of control discernment to further change to many states light has had more convenient control.
In this embodiment, the execution unit is the LED lamp, infrared sensor and the LED lamp adjacent installation that corresponds control, under the condition that light is lighted, the user is difficult to perceive the set position of sensor, helps promoting to use experience. The light driving part is the prior art, and the circuit structure driven by the sensor can be referred.
Except the LED lamp, the execution unit can contain other display units or lighting units, and as the application of underwater operation, the execution unit can also contain a mechanical motion unit, such as a mechanical arm or other units with clamping, rotation, linear motion or acting, when the execution unit is arranged outside the waterproof cavity, the execution unit and the control unit can be provided with communication units which can be communicated with each other, wireless communication can be realized, wired communication can be realized, and under the condition of wired connection, waterproof treatment of threading through holes needs to be carried out.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims (10)

1. An underwater gesture interaction method is based on an execution unit and a control unit and is characterized in that: a waterproof cavity is also arranged; the control unit is arranged in the waterproof cavity, and an infrared sensor is also arranged in the waterproof cavity; the execution unit is arranged in the waterproof cavity and electrically connected with the control unit, or arranged outside the waterproof cavity and in communication connection with the control unit; a light-transmitting area is arranged on the waterproof cavity, and the sensing end of the infrared sensor faces one side of the light-transmitting area so as to capture gesture interaction actions and trigger the control unit to control the action or state change of the execution unit; the signal sensed by the infrared sensor comprises the following processing steps:
A. the induction signal of the infrared sensor is transmitted to the control unit after being sequentially subjected to primary amplification, band-pass filtering, secondary amplification and analog-to-digital conversion;
B. the control unit repeatedly reads and processes the signals after the analog-digital conversion;
C. in the step A, the amplification factor of the primary amplification and/or the passband gain of the bandpass filtering can be actively switched, and a switching control signal for the active switching comes from the control unit; after the amplification factor of the first-stage amplification and/or the passband gain of the bandpass filtering are switched, the strength of the received signal is changed after the analog-to-digital conversion processing;
D. the control unit sends out one or more switching control signals after reading the signal transmitted by the infrared sensor for one time, so as to control the amplification factor of the primary amplification and/or the passband gain switching of the bandpass filtering, and reads the signal transmitted by the analog-to-digital conversion again after sending out the switching control signal;
E. the control unit continuously reads the output signals of the analog-digital conversion, identifies the signal change difference, and judges the distance between the objects detected by the infrared sensor or the distance interval according to the feedback signal difference or the signal strength;
F. the control unit outputs signals to control the action or state change of the execution unit.
2. The underwater gesture interaction method of claim 1, wherein the primary amplification in the step A comprises transimpedance amplification or programmable gain amplification; the second amplification in step a comprises differential amplification.
3. An underwater gesture interaction method according to claim 2, characterized in that: the output signal of the control unit is used as a feedback signal or an input signal to participate in the secondary amplification processing process in the step A; and D/A conversion processing is carried out on the output signal of the control unit participating in the secondary amplification processing in the step A.
4. The underwater gesture interaction method of claim 1 or 2, wherein the waterproof cavity comprises a shell and a light-transmitting cover, the light-transmitting cover and the shell are installed in a buckling mode, and a gap between the light-transmitting cover and the shell is filled with waterproof colloid.
5. An underwater gesture interaction method according to claim 1 or 2, characterized in that: the number of the infrared sensors comprises a plurality of infrared sensors, the working state of each infrared sensor can be switched on and off, and the switching control signals are correspondingly controlled through the output of the control unit.
6. An underwater gesture interaction method according to claim 5, characterized in that: the outputs of the infrared sensors are connected in parallel, and the control unit sends out conversion control signals in a time-sharing manner, so that the infrared sensors correspondingly output to the same first-stage amplification in a time-division multiplexing manner for signal processing.
7. An underwater gesture interaction method according to claim 1, characterized in that: in the step D, the reading time interval of the output signals of two adjacent analog-to-digital conversions before and after the switching control signal is sent out by the control unit does not exceed 10 ms.
8. An underwater gesture interaction method according to claim 1, characterized in that: in the step D, the time interval between two adjacent times of sending out the switching control signals by the control unit is either between 30ms and 500ms or not more than 5 ms.
9. An underwater gesture interaction method according to claim 1, characterized in that: the execution unit comprises one of a display unit, an illumination unit and a mechanical motion unit.
10. An underwater gesture interaction method according to claim 9, characterized in that: the execution unit is an LED lamp, and the infrared sensor is installed adjacent to the LED lamp which is controlled correspondingly.
CN201811590269.4A 2018-12-25 2018-12-25 Underwater gesture interaction method Active CN109669577B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103728902A (en) * 2013-12-24 2014-04-16 华南农业大学 Man-machine interaction device suitable for paddy field power-driven operation machine and application of man-machine interaction device
CN105573504A (en) * 2015-12-31 2016-05-11 艾维新能源科技南京有限公司 Identification method for gesture control switch
CN106814859A (en) * 2017-03-20 2017-06-09 肖赫 A kind of man-machine interaction method of infrared gesture identification
CN106997660A (en) * 2017-03-31 2017-08-01 泉芯电子技术(深圳)有限公司 A kind of infrared remote receiver and its gain control method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140014839A1 (en) * 2012-07-11 2014-01-16 Tom Chang Sensor design based on light sensing
US10289820B2 (en) * 2015-02-24 2019-05-14 Motorola Mobility Llc Multiuse 3D IR for electronic device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103728902A (en) * 2013-12-24 2014-04-16 华南农业大学 Man-machine interaction device suitable for paddy field power-driven operation machine and application of man-machine interaction device
CN105573504A (en) * 2015-12-31 2016-05-11 艾维新能源科技南京有限公司 Identification method for gesture control switch
CN106814859A (en) * 2017-03-20 2017-06-09 肖赫 A kind of man-machine interaction method of infrared gesture identification
CN106997660A (en) * 2017-03-31 2017-08-01 泉芯电子技术(深圳)有限公司 A kind of infrared remote receiver and its gain control method

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Address after: 401147 Room 405, 4th floor, building 4, No. 106, west section of Jinkai Avenue, Kangmei street, Liangjiang New District, Chongqing

Patentee after: CHONGQING MINE TECHNOLOGIES CO.,LTD.

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Patentee before: CHONGQING MINE TECHNOLOGIES CO.,LTD.