CN106028107A - Wireless English text input system based on accelerometer and gyroscope sensor - Google Patents
Wireless English text input system based on accelerometer and gyroscope sensor Download PDFInfo
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- CN106028107A CN106028107A CN201610442902.XA CN201610442902A CN106028107A CN 106028107 A CN106028107 A CN 106028107A CN 201610442902 A CN201610442902 A CN 201610442902A CN 106028107 A CN106028107 A CN 106028107A
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- 230000001133 acceleration Effects 0.000 claims abstract description 6
- 238000012937 correction Methods 0.000 claims description 10
- 238000012790 confirmation Methods 0.000 claims description 5
- 230000004927 fusion Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000000707 wrist Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
- H04N21/42204—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor
- H04N21/42206—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor characterized by hardware details
- H04N21/42221—Transmission circuitry, e.g. infrared [IR] or radio frequency [RF]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/475—End-user interface for inputting end-user data, e.g. personal identification number [PIN], preference data
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- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- User Interface Of Digital Computer (AREA)
- Input From Keyboards Or The Like (AREA)
Abstract
The invention relates to a wireless English text input system based on an accelerometer and a gyroscope sensor, and belongs to the technical field of an input device. According to the system, a master control chip is connected with an MPU6050 chip. Collected acceleration signals and gyroscope signals are fused by employing the DMP function of the MPU6050 chip, thereby obtaining a quaternion for attitude angle solution. A wireless module transmitter is connected with the master control chip and is responsible for transmitting an attitude angle and key information. A wireless module receiver is responsible for receiving the attitude angle and key information. The attitude angle and key information are sent to a data processing module through the wireless module receiver. The attitude angle and key data are analyzed by the data processing module. The data processing module is used for identifying and confirming which key in a virtual keyboard is selected according to the obtained attitude angle and key information. According to the system, the number of the keys and the pressing times of the keys are reduced, and the letter input efficiency is improved.
Description
Technical field
The present invention relates to a kind of based on accelerometer with the wireless English text input system of gyro sensor, belong to defeated
Enter equipment technical field.
Background technology
Along with the development of science and technology, traditional tv gradually transition develops into intelligent television.It is different from traditional tv, intelligence
TV can utilize letter simplicity according to the wish searching programs of user, traditional remote control by five based on button operation
Device carry out letter input on need constantly to push button, there is the shortcomings such as complex operation, inefficiency.The most existing remote control
Device there is also bigger transformation space, to improve the efficiency of letter input.
Summary of the invention
The invention provides a kind of based on accelerometer with the wireless English text input system of gyro sensor, with
Loaded down with trivial details, the shortcoming of inefficiency in the existing Intelligent TV remote controller letter input operation of solution.
The technical scheme is that the input of a kind of wireless English text based on accelerometer and gyro sensor is
System, including acquisition module 4, wireless transport module 7 and data processing module 8；Described acquisition module 4 by push-button unit 1,
MPU6050 chip 2 and main control chip 3 form, and wherein MPU6050 chip 2 is one and is integrated with 3 axle MEMS gyroscope, 3 axle MEMS
Accelerometer and the MPU6050 chip of an extendible digital moving processor DMP；Described wireless transport module 7 includes
One wireless module emitter 5 and a wireless module receptor 6；
Described push-button unit 1 includes a touch-switch, and it is connected to main control chip 3 and is responsible for realizing confirmation and chooses virtual key
The function of button in dish, main control chip 3 is connected with MPU6050 chip 2 by numeral I2C interface and is used MPU6050 chip 2
DMP function the acceleration signal of collection and gyroscope signal are carried out fusion treatment, obtain quaternary number and carry out solving of attitude；
Wireless module emitter 5 is connected with main control chip 3 by USART interface, is responsible for attitude angle and the transmission of key information；Wireless mould
Block receptor 6 and data processing module 8 are integrated in a smart television set top box device, and wireless module receptor 6 is responsible for connecing
Receive attitude angle and key information, be sent to data processing module 8 by wireless module receptor 6 and resolve attitude angle and by bond number
According to, data processing module 8 according to the attitude angle obtained and key information for identify and confirm currently to choose for dummy keyboard
In which button；
Described for identifying and confirming the specifically comprising the following steps that for which button in dummy keyboard currently chosen
Step 1: obtain the row number currently chosen: obtain the roll angle in attitude angleThe row that then dummy keyboard is currently chosen
Number R is by formula:Calculate；Wherein,
RepresentThe row number determined when being positioned at (-120 °/j, 120 °/j) scope；If it is currentAngle more than or equal to 60 °, at data
Reason module 8 will be currentAngle correction be 59 °；If it is currentAngle less than or equal to-60 °, data processing module 8 ought
BeforeAngle correction be-59 °；J represents the columns summation of current virtual keyboard；
Step 2: obtain the level number currently chosen: take out the pitching angle theta in attitude angle: when the angle of θ is by more than or equal to 45 °
Changing into less than 45 °, the level number L the most currently chosen adds one；When the angle of θ is by changing into less than 45 ° more than or equal to 45 ° and last time
The level number L chosen is i-th layer, and the level number L the most currently chosen changes into ground floor；When the angle of θ is by less than or equal to-45 ° of changes
For more than-45 °, the level number L the most currently chosen subtracts one；When the angle of θ was changed into more than-45 ° and last time by less than or equal to-45 °
The level number L chosen is ground floor, and the level number L the most currently chosen is i-th layer；Wherein, i represents that the number of plies of current virtual keyboard is total
With；
Step 3: obtain light-touch switch key-press information: confirm the button currently chosen according to row R and level number L, if pressed
The touch-switch of key unit 1 is pressed, and confirms to perform currently to choose the operation of button: if currently choose for English character
Or punctuation mark button then exports this character, if the button currently chosen is space bar, on the basis of original output character
Insert a space character, if the button currently chosen is to delete key, delete the character of last output.
Number of plies summation i of described current virtual keyboard is 3.
Described main control chip 3 uses STM32F103 single-chip microcomputer.
Being wirelessly transferred of described wireless transport module uses low energy consumption bluetooth 4.0 communication protocol；Described data processing module
It it is a smart television set top box being equipped with bluetooth 4.0；Described wireless transport module uses HM-11 bluetooth module.
Wherein, described main control chip uses the DMP function acquirement quaternary number of MPU6050 to carry out the algorithm of attitude algorithm such as
Under:
1) the quaternary number of DMP output of MPU6050 is set as q=[w x y z]T；
2) the quaternary number obtained due to MPU6050 is q30 form, and namely floating number is exaggerated 30 powers times of 2.Changing
Must first reduce before being counted as attitude angle, i.e. divided by 2 30 powers times, the quaternary number after reduction is q0=[w0 x0
y0 z0]T；
Wherein
3) set calculated attitude angle asWherein θ is the angle of pitch,For roll angle, quaternary count to attitude angle it
Between conversion formula be:
The invention has the beneficial effects as follows:
1) activity entering through wrist of character is carried out, and decreases the quantity of button and the number of times of depresses button, improves
The efficiency of alphabetical input.
2) under dynamic operating conditions, owing to present invention uses the DMP function of MPU6050, the most stable, precision
Higher.
3) by building a kind of virtual keyboard layout meeting this interactive mode, therefore handle more efficient, operation tired
Labor sense reduces.
Accompanying drawing explanation
Fig. 1 is present system structured flowchart；
Fig. 2 is the optimization layout structure schematic diagram of dummy keyboard of the present invention；
Fig. 3 is 4 degree of freedom of wrist activity of the present invention.
Detailed description of the invention
Embodiment 1: as Figure 1-3, a kind of wireless English text based on accelerometer and gyro sensor inputs
System, including acquisition module 4, wireless transport module 7 and data processing module 8；Described acquisition module 4 by push-button unit 1,
MPU6050 chip 2 and main control chip 3 form, and wherein MPU6050 chip 2 is one and is integrated with 3 axle MEMS gyroscope, 3 axle MEMS
Accelerometer and the MPU6050 chip of an extendible digital moving processor DMP；Described wireless transport module 7 includes
One wireless module emitter 5 and a wireless module receptor 6；
Described push-button unit 1 includes a touch-switch, and it is connected to main control chip 3 and is responsible for realizing confirmation and chooses virtual key
The function of button in dish, main control chip 3 is connected with MPU6050 chip 2 by numeral I2C interface and is used MPU6050 chip 2
DMP function the acceleration signal of collection and gyroscope signal are carried out fusion treatment, obtain quaternary number and carry out solving of attitude；
Wireless module emitter 5 is connected with main control chip 3 by USART interface, is responsible for attitude angle and the transmission of key information；Wireless mould
Block receptor 6 and data processing module 8 are integrated in a smart television set top box device, and wireless module receptor 6 is responsible for connecing
Receive attitude angle and key information, be sent to data processing module 8 by wireless module receptor 6 and resolve attitude angle and by bond number
According to, data processing module 8 according to the attitude angle obtained and key information for identify and confirm currently to choose for dummy keyboard
In which button；
Described for identifying and confirming the specifically comprising the following steps that for which button in dummy keyboard currently chosen
Step 1: obtain the row number currently chosen: obtain the roll angle in attitude angleThe row that then dummy keyboard is currently chosen
Number R is by formula:Calculate；Wherein,
RepresentThe row number determined when being positioned at (-120 °/j, 120 °/j) scope；If it is currentAngle more than or equal to 60 ° (i.e.), data processing module 8 will be currentAngle correction be 59 °；If it is currentAngle less than or equal to-
60 ° (i.e.), data processing module 8 will be currentAngle correction be-59 °；J represents current virtual keyboard
Columns summation；
Step 2: obtain the level number currently chosen: take out the pitching angle theta in attitude angle: when the angle of θ is by more than or equal to 45 °
Changing into less than 45 °, the level number L the most currently chosen adds one；When the angle of θ is by changing into less than 45 ° more than or equal to 45 ° and last time
The level number L chosen is i-th layer, and the level number L the most currently chosen changes into ground floor；When the angle of θ is by less than or equal to-45 ° of changes
For more than-45 °, the level number L the most currently chosen subtracts one；When the angle of θ was changed into more than-45 ° and last time by less than or equal to-45 °
The level number L chosen is ground floor, and the level number L the most currently chosen is i-th layer；Wherein, i represents that the number of plies of current virtual keyboard is total
With；
Step 3: obtain light-touch switch key-press information: confirm the button currently chosen according to row R and level number L, if pressed
The touch-switch of key unit 1 is pressed, and confirms to perform currently to choose the operation of button: if currently choose for English character
Or punctuation mark button then exports this character, if the button currently chosen is space bar, on the basis of original output character
Insert a space character, if the button currently chosen is to delete key, delete the character of last output.
Described main control chip 3 uses STM32F103 single-chip microcomputer.
Embodiment 2: as Figure 1-3, a kind of wireless English text based on accelerometer and gyro sensor inputs
System, including acquisition module 4, wireless transport module 7 and data processing module 8；Described acquisition module 4 by push-button unit 1,
MPU6050 chip 2 and main control chip 3 form, and wherein MPU6050 chip 2 is one and is integrated with 3 axle MEMS gyroscope, 3 axle MEMS
Accelerometer and the MPU6050 chip of an extendible digital moving processor DMP；Described wireless transport module 7 includes
One wireless module emitter 5 and a wireless module receptor 6；
Described push-button unit 1 includes a touch-switch, and it is connected to main control chip 3 and is responsible for realizing confirmation and chooses virtual key
The function of button in dish, main control chip 3 is connected with MPU6050 chip 2 by numeral I2C interface and is used MPU6050 chip 2
DMP function the acceleration signal of collection and gyroscope signal are carried out fusion treatment, obtain quaternary number and carry out solving of attitude；
Wireless module emitter 5 is connected with main control chip 3 by USART interface, is responsible for attitude angle and the transmission of key information；Wireless mould
Block receptor 6 and data processing module 8 are integrated in a smart television set top box device, and wireless module receptor 6 is responsible for connecing
Receive attitude angle and key information, be sent to data processing module 8 by wireless module receptor 6 and resolve attitude angle and by bond number
According to, data processing module 8 according to the attitude angle obtained and key information for identify and confirm currently to choose for dummy keyboard
In which button；
Described for identifying and confirming the specifically comprising the following steps that for which button in dummy keyboard currently chosen
Step 1: obtain the row number currently chosen: obtain the roll angle in attitude angleThe row that then dummy keyboard is currently chosen
Number R is by formula:Calculate；Wherein,
RepresentThe row number determined when being positioned at (-120 °/j, 120 °/j) scope；If it is currentAngle more than or equal to 60 °, at data
Reason module 8 will be currentAngle correction be 59 °；If it is currentAngle less than or equal to-60 °, data processing module 8 ought
BeforeAngle correction be-59 °；J represents the columns summation of current virtual keyboard；
Step 2: obtain the level number currently chosen: take out the pitching angle theta in attitude angle: when the angle of θ is by more than or equal to 45 °
Changing into less than 45 °, the level number L the most currently chosen adds one；When the angle of θ is by changing into less than 45 ° more than or equal to 45 ° and last time
The level number L chosen is i-th layer, and the level number L the most currently chosen changes into ground floor；When the angle of θ is by less than or equal to-45 ° of changes
For more than-45 °, the level number L the most currently chosen subtracts one；When the angle of θ was changed into more than-45 ° and last time by less than or equal to-45 °
The level number L chosen is ground floor, and the level number L the most currently chosen is i-th layer；Wherein, i represents that the number of plies of current virtual keyboard is total
With；
Step 3: obtain light-touch switch key-press information: confirm the button currently chosen according to row R and level number L, if pressed
The touch-switch of key unit 1 is pressed, and confirms to perform currently to choose the operation of button: if currently choose for English character
Or punctuation mark button then exports this character, if the button currently chosen is space bar, on the basis of original output character
Insert a space character, if the button currently chosen is to delete key, delete the character of last output.
Embodiment 3: as Figure 1-3, a kind of wireless English text based on accelerometer and gyro sensor inputs
System, including acquisition module 4, wireless transport module 7 and data processing module 8；Described acquisition module 4 by push-button unit 1,
MPU6050 chip 2 and main control chip 3 form, and wherein MPU6050 chip 2 is one and is integrated with 3 axle MEMS gyroscope, 3 axle MEMS
Accelerometer and the MPU6050 chip of an extendible digital moving processor DMP；Described wireless transport module 7 includes
One wireless module emitter 5 and a wireless module receptor 6；
Described push-button unit 1 includes a touch-switch, and it is connected to main control chip 3 and is responsible for realizing confirmation and chooses virtual key
The function of button in dish, main control chip 3 is connected with MPU6050 chip 2 by numeral I2C interface and is used MPU6050 chip 2
DMP function the acceleration signal of collection and gyroscope signal are carried out fusion treatment, obtain quaternary number and carry out solving of attitude；
Wireless module emitter 5 is connected with main control chip 3 by USART interface, is responsible for attitude angle and the transmission of key information；Wireless mould
Block receptor 6 and data processing module 8 are integrated in a smart television set top box device, and wireless module receptor 6 is responsible for connecing
Receive attitude angle and key information, be sent to data processing module 8 by wireless module receptor 6 and resolve attitude angle and by bond number
According to, data processing module 8 according to the attitude angle obtained and key information for identify and confirm currently to choose for dummy keyboard
In which button；
Described main control chip 3 uses STM32F103 single-chip microcomputer.
As in figure 2 it is shown, number of plies summation i of described current virtual keyboard is 3, columns summation j of current virtual keyboard is 10；
Wherein, dummy keyboard is made up of 26 English character buttons, 2 punctuation mark buttons and 2 function buttons, 2 punctuation marks
Button is respectively english punctuation mark " comma " and english punctuation mark " fullstop ", 2 function buttons be respectively space button and
Delete button.Then, described for identifying and confirming the specifically comprising the following steps that for which button in dummy keyboard currently chosen
Step 1: obtain the row number currently chosen: obtain the roll angle in attitude angleThe row that then dummy keyboard is currently chosen
Number R is by formula:Calculate；Wherein, if currentlyAngle be more than or equal to
60 °, data processing module 8 will be currentAngle correction be 59 °；If it is currentAngle less than or equal to-60 °, data process
Module 8 will be currentAngle correction be-59 °；The columns summation of current virtual keyboard is 10；
Step 2: obtain the level number currently chosen: take out the pitching angle theta in attitude angle: when the angle of θ is by more than or equal to 45 °
Changing into less than 45 °, the level number L the most currently chosen adds one；When the angle of θ is by changing into less than 45 ° more than or equal to 45 ° and last time
The level number L chosen is the 3rd layer, and the level number L the most currently chosen changes into ground floor；When the angle of θ is by less than or equal to-45 ° of changes
For more than-45 °, the level number L the most currently chosen subtracts one；When the angle of θ was changed into more than-45 ° and last time by less than or equal to-45 °
The level number L chosen is ground floor, and the level number L the most currently chosen is the 3rd layer；
Step 3: obtain light-touch switch key-press information: confirm the button currently chosen according to row R and level number L, if pressed
The touch-switch of key unit 1 is pressed, and confirms to perform currently to choose the operation of button: if currently choose for English character
Or punctuation mark button then exports this character, if the button currently chosen is space bar, on the basis of original output character
Insert a space character, if the button currently chosen is to delete key, delete the character of last output.
When the number of plies is 3, arrives each layer and all have only to a step (i.e. a layer), apart from short, in hgher efficiency.
Above in conjunction with accompanying drawing, the detailed description of the invention of the present invention is explained in detail, but the present invention is not limited to above-mentioned
Embodiment, in the ken that those of ordinary skill in the art are possessed, it is also possible to before without departing from present inventive concept
Put that various changes can be made.
Claims (3)
1. one kind based on accelerometer and the wireless English text input system of gyro sensor, it is characterised in that: include adopting
Collection module (4), wireless transport module (7) and data processing module (8)；Described acquisition module (4) by push-button unit (1),
MPU6050 chip (2) and main control chip (3) composition, wherein MPU6050 chip (2) be one be integrated with 3 axle MEMS gyroscope, 3
Axle mems accelerometer and the MPU6050 chip of an extendible digital moving processor DMP；Described wireless transport module
(7) a wireless module emitter (5) and a wireless module receptor (6) are included；
Described push-button unit (1) includes a touch-switch, and it is connected to main control chip (3) and is responsible for realizing confirmation and chooses virtual key
The function of button in dish, main control chip (3) is connected by numeral I2C interface with MPU6050 chip (2) and uses MPU6050
Acceleration signal and the gyroscope signal of collection are carried out fusion treatment by the DMP function of chip (2), obtain quaternary number and carry out attitude
Angle resolves；Wireless module emitter (5) is connected with main control chip (3) by USART interface, responsible attitude angle and key information
Transmit；Wireless module receptor (6) and data processing module (8) are integrated in a smart television set top box device, wireless mould
Block receptor (6) is responsible for receiving attitude angle and key information, is sent to data processing module by wireless module receptor (6)
(8) parsing attitude angle and button data, data processing module (8) is used for identifying and true according to the attitude angle obtained and key information
Recognize currently choose for which button in dummy keyboard；
Described for identifying and confirming the specifically comprising the following steps that for which button in dummy keyboard currently chosen
Step 1: obtain the row number currently chosen: obtain the roll angle in attitude angle, then dummy keyboard is currently chosen row R
By formula:Calculate；Wherein,Table
ShowThe row number determined when being positioned at (-120 °/j, 120 °/j) scope；If it is currentAngle more than or equal to 60 °, data process
Module (8) will be currentAngle correction be 59 °；If it is currentAngle less than or equal to-60 °, data processing module (8) will
CurrentlyAngle correction be-59 °；J represents the columns summation of current virtual keyboard；
Step 2: obtain the level number currently chosen: take out the pitching angle theta in attitude angle: when the angle of θ is by more than or equal to 45 ° of changes
For less than 45 °, the level number L the most currently chosen adds one；When the angle of θ is chosen less than 45 ° and last time by changing into more than or equal to 45 °
Level number L be i-th layer, the level number L the most currently chosen changes into ground floor；When the angle of θ is big by changing into less than or equal to-45 °
In-45 °, the level number L the most currently chosen subtracts one；When the angle of θ is by changing into more than-45 ° less than or equal to-45 ° and choosing last time
Level number L be ground floor, the level number L the most currently chosen is i-th layer；Wherein, i represents the number of plies summation of current virtual keyboard；
Step 3: obtain light-touch switch key-press information: confirm the button currently chosen according to row R and level number L, if button list
The touch-switch of unit (1) is pressed, and confirms to perform currently to choose the operation of button: if currently choose for English character or
Punctuation mark button then exports this character, if the button currently chosen is space bar, inserts on the basis of original output character
Enter a space character, if the button currently chosen is to delete key, delete the character of last output.
The most according to claim 1 based on accelerometer with the wireless English text input system of gyro sensor, its
It is characterised by: number of plies summation i of described current virtual keyboard is 3.
It is the most according to claim 1 and 2 based on accelerometer with the wireless English text input system of gyro sensor,
It is characterized in that: described main control chip (3) uses STM32F103 single-chip microcomputer.
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| CN109814707A (en) * | 2018-12-19 | 2019-05-28 | 东北大学秦皇岛分校 | A kind of virtual input method and system based on intelligent finger ring |
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| 王锋: "可穿戴人机交互中的Eyes-Free技术研究进展与分析", 《昆明理工大学学报（自然科学版）》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109814707A (en) * | 2018-12-19 | 2019-05-28 | 东北大学秦皇岛分校 | A kind of virtual input method and system based on intelligent finger ring |
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| Publication number | Publication date |
|---|---|
| CN106028107B (en) | 2018-12-14 |
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