CN206209622U - A kind of wireless midair mouse based on STM32 microcontrollers - Google Patents
A kind of wireless midair mouse based on STM32 microcontrollers Download PDFInfo
- Publication number
- CN206209622U CN206209622U CN201620710272.5U CN201620710272U CN206209622U CN 206209622 U CN206209622 U CN 206209622U CN 201620710272 U CN201620710272 U CN 201620710272U CN 206209622 U CN206209622 U CN 206209622U
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- wireless
- stm32 microcontrollers
- axle
- acceleration transducer
- microcontroller
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Abstract
The utility model discloses a kind of wireless midair mouse based on STM32 microcontrollers, including master signal collection and wireless transmission part and Radio reception section；Master signal is gathered includes three axle magnetoresistive transducers, three axle magnetoresistive transducers connection six axle gyroscopes and acceleration transducer, six axle gyroscopes and acceleration transducer connection STM32 microcontrollers, STM32 microcontrollers connection radio transmitter with wireless transmission section point；Radio reception section includes wireless receiving module, and wireless receiving module connection microcontroller, microcontroller is connected with computer；The utility model compensates the error of gyroscope using the static characteristic and long-time stability of acceleration transducer and magnetoresistive transducer, systematic error is set to restrain rapidly, realize the stable operation of system, the wherein error of the acceleration transducer main compensation angle of pitch and roll angle, the error of magnetoresistive transducer main compensation course angle.
Description
Technical field
The utility model belongs to human-computer interaction device field, and in particular to a kind of wireless sky based on STM32 microcontrollers
Middle mouse.
Background technology
Mouse is one of computer entry device of the most frequently used and most frequent operation, and it is with quick, accurate, intuitively screen
Positioning and control ability, facilitate interacting between user and computer, enhance the function of system.But, with flat board electricity
The prevalence of the portable sets such as brain, notebook, intelligent digital Set Top Box, intelligent game computer, traditional plane formula mouse is
The need for mobile office, mobile entertainment and life be can not meet to 3d space manipulation.Conventional mouse needs enterprising in fixed pan
Row operation, it is impossible to break away from the limitation of two dimensional surface, and the normal work of mouse also has comparing requirement high to place plane.With
The raising that the development and user for interaction new technology are required mouse action, the air mouse for improving man-machine interaction mode is subject to more
Carry out more concerns.Air mouse is that one kind can complete mouse pointer positioning function by moving freely in three dimensions
Computer entry device, it has broken away from the dependence to plane operations while conventional mouse function is realized, therefore aerial mouse
Indicate application and market prospects well.
Freely, it is conveniently the most basic characteristic of air mouse, such as, in office realm, it is more preferable that it can substitute laser pen
Complete PPT demonstration, it can also allow be PPT demonstration personnel need not be sitting in operating computer on conference table, by directly rocking
Mouse can just realize operation.Its free convenient characteristic also can effectively solve conventional mouse and give people body upper band simultaneously
The damage for coming, such as mouse hand, cervical spondylopathy etc..
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency, there is provided a kind of wireless air based on STM32 microcontrollers
Mouse, by the collection to needle locating signal and treatment, the scanning of push button signalling and identifying processing, transmission of wireless signals and carries
Take, make it have positioning precision and flatness higher.
In order to achieve the above object, the utility model includes master signal collection and wireless transmission part and wireless receiving
Part；
The master signal collection includes three axle magnetoresistive transducers, three axle magnetoresistive transducers connection six with wireless transmission section point
Axle gyroscope and acceleration transducer, six axle gyroscopes and acceleration transducer connection STM32 microcontrollers, STM32 microcontrollers
Device connects radio transmitter；
The magnetoresistive transducer of three axle and six axle gyroscopes and acceleration transducer are transported in the air for gathering mouse
Dynamic attitude parameter；
The STM32 microcontrollers are used to obtain the attitude parameter of mouse, and filtering is converted to displacement corresponding with cursor
Information, sends to radio transmitter；
The Radio reception section include wireless receiving module, wireless receiving module connection microcontroller, microcontroller with
Computer is connected；
It is light that master signal collection and wireless transmission section are distributed incoming information flow dissection process by the microcontroller
Marker displacement information and key information, retransmit to computer.
The three axles magnetoresistive transducer, six axle gyroscopes and acceleration transducer, STM32 microcontrollers and wireless transmission electricity
Road is powered by being connected with the rechargeable battery of power management chip, and rechargeable battery is powered by USB interface；
The wireless receiving module and microcontroller are powered by being connected with the USB interface chip of battery management chip, USB
Interface chip connects computer.
The six axles gyroscope and acceleration transducer use MPU-6050.
The magnetoresistive transducer uses HMC-5983.
The radio transmitter is using the STM32F103ZET6 chips of ARM Cortex_M3 architectural frameworks as system
Core processor, outside extension 8M byte spi bus flash storages and 1M byte SRAM memories, and configuration processor is most
Mini system operating circuit and JTAG debugging mouths.
The microcontroller uses the AT89S52 of 51 single-chip microcomputers.
Between the magnetoresistive transducer of three axle and six axle gyroscopes and acceleration transducer and six axle gyroscopes and acceleration
Pass through I between degree sensor and STM32 microcontrollers2C buses are connected, and are passed through between STM32 microcontrollers and wireless transmitter module
Spi bus are connected.
Connected by spi bus between the wireless receiving module and microcontroller.
Compared with prior art, the utility model is passed by the magnetoresistive transducer and six axle gyroscopes and acceleration of three axles
The attitude parameter that sensor collection mouse is moved in the air, data are treated as and light by the filtering and calculating of STM32 controllers
Corresponding displacement information is marked, according to the communication protocol rule for defining, through wireless mould after it is combined with control information
Block is launched, and wireless receiving module receives after information flow that microcontroller dissection process is cursor displacement information and button as early as possible
Information, completes the interactive communication with computer, finally realizes the function of wireless midair mouse control terminal computer；The utility model profit
The error of gyroscope is compensated with the static characteristic and long-time stability of acceleration transducer and magnetoresistive transducer, makes systematic error
Rapid convergence, realizes the stable operation of system, the wherein error of the acceleration transducer main compensation angle of pitch and roll angle, magnetic resistance
The error of sensor main compensation course angle, it is easy that the system fully takes into account mouse from the type selecting of each device to Software for Design
The problem of operation, high accuracy and flatness high, on the premise of mouse small size, low cost and real-time is ensured, realizes mouse
Mark system is from the collection of exercise data, treatment, resolving, mapping, coding, wireless receiving and dispatching and the control whole mouse performance mistake of computer
Journey.
Brief description of the drawings
Fig. 1 is the utility model signal acquisition and wireless transmission part-structure block diagram；
Fig. 2 is the utility model reception of wireless signals part-structure block diagram；
Fig. 3 is MPU-6050 circuit interconnect patterns in the utility model；
Fig. 4 is HMC5983 sensor chip application circuits in the utility model；
Fig. 5 is nRF24L01 and MCU telecommunication circuit figures in the utility model.
Specific embodiment
The utility model is described further below in conjunction with the accompanying drawings.
Including master signal collection and wireless transmission part and Radio reception section；
The master signal collection includes three axle magnetoresistive transducers, three axle magnetoresistive transducers connection six with wireless transmission section point
Axle gyroscope and acceleration transducer, six axle gyroscopes and acceleration transducer connection STM32 microcontrollers, STM32 microcontrollers
Device connects radio transmitter, three axle magnetoresistive transducers, six axle gyroscopes and acceleration transducer, STM32 microcontrollers and nothing
Line radiating circuit is powered by being connected with the rechargeable battery of power management chip, and rechargeable battery is powered by USB interface, and three
Between the magnetoresistive transducer of axle and six axle gyroscopes and acceleration transducer and six axle gyroscopes and acceleration transducer and STM32
Pass through I between microcontroller2C buses are connected, and are connected by spi bus between STM32 microcontrollers and wireless transmitter module；
The magnetoresistive transducer of three axle and six axle gyroscopes and acceleration transducer are transported in the air for gathering mouse
Dynamic attitude parameter；
The STM32 microcontrollers are used to obtain the attitude parameter of mouse, and filtering is converted to displacement corresponding with cursor
Information, sends to radio transmitter；
The Radio reception section include wireless receiving module, wireless receiving module connection microcontroller, microcontroller with
Computer is connected, and wireless receiving module and microcontroller are powered by being connected with the USB interface chip of battery management chip, and USB connects
Mouth chip connection computer, is connected between wireless receiving module and microcontroller by spi bus；
It is light that master signal collection and wireless transmission section are distributed incoming information flow dissection process by the microcontroller
Marker displacement information and key information, retransmit to computer.
The main sensors part of mouse system is gyroscope and acceleration transducer, magnetoresistive transducer.Gyroscope collection
It is the three-dimensional angular velocity of mouse movement；What acceleration transducer was gathered is the linear acceleration of mouse movement；Magneto-resistive transducing
Device is primarily used to measure the size and Orientation in magnetic field of the earth.The key technology of air mouse is exactly to be come using foregoing three groups of data
The motion of positioning and control mouse pointer, the particular content being related to is exactly the data fusion of multisensor, the precision of data fusion
It is directly connected to the sensitivity and the degree of accuracy of mouse.Gyroscope is thermally sensitive device, and the change of temperature can cause gyro
The skew of the rate value of instrument zero, so as to influence the sensitivity of air mouse.In view of environment temperature on the influence of the possibility of mouse, it is necessary to
Temperature-compensating is carried out to gyroscope.
Gyro sensor is an indirect measurement device, the angle speed that output data is moved for three direction of principal axis of gyroscope
Angle value.It only exports the angular velocity of rotation of carrier, it is necessary to angular speed is further calculated into corresponding angle to time integral.By
There is serious null offset and the influence of random error in gyroscope, integral error can be produced in solution process.Short time
Interior, integral error very little can be ignored, but interior for a long time, and this integral error can have a strong impact on the essence of attitude algorithm
True property and reliability so that gyroscope is difficult to reach the precision of application.
Acceleration transducer can't detect carrier perpendicular to gravity for the motion-insensitive vertical with Action of Gravity Field direction
The rotary motion of action direction.And acceleration sensor dynamic characteristic is not high, for motion change, carrier can not be real faster
Now quickly tracking so as to accurately be exported, so acceleration transducer outputting measurement value reference value is not in a short time
Greatly, but in Long time scale, its measured value but change over time it is smaller, it is more accurate.Therefore, this patent passes acceleration
Acceleration of gravity this three-dimensional reference vector of sensor measurement a, observed quantity as mouse platform is used for auxiliary corrective gyro
Instrument.
Magnetoresistive transducer is mainly used to measure the size and Orientation in magnetic field of the earth.In view of acceleration transducer pair and gravity
The vertical motion-insensitive of action direction, can't detect rotary motion i.e. carrier heading of the carrier perpendicular to Action of Gravity Field direction
Change.And gyroscope is in measurement and calculating process, there is null offset and random error, in order to system accuracy and
Flatness, it is necessary to additionally introduce a kind of reference signal not changed with time integral, mouse is further corrected by it
Attitude system, suppresses the error of measurement combination, so as to reach the purpose of amendment course angle.Because earth magnetism is a long-time stable
Amount, so being modified to course angle using magnetoresistive transducer herein so that the course angle that gyroscope is calculated is more accurate
It is reliable, improve the accuracy of attitude measurement system.
Within the system, using acceleration transducer and static characteristic and long-time stability the compensation top of magnetoresistive transducer
The error of spiral shell instrument, makes systematic error restrain rapidly, realizes the stable operation of system, the wherein pitching of acceleration transducer main compensation
Angle and the error of roll angle, the error of magnetoresistive transducer main compensation course angle.The system is from the type selecting of each device to software
Design fully takes into account the problem of mouse easy to operate, high accuracy and flatness high, is ensureing mouse small size, low cost and real
On the premise of when property, mouse system from the collection of exercise data, treatment, resolving, mapping, coding, wireless receiving and dispatching and control is realized
The whole mouse performance process of computer processed.
In sum, the signal acquisition sensor of this patent wireless midair mouse system chooses the axle gyroscopes of MPU-6050 six
And acceleration transducer and triaxial testing system HMC-5983 magnetoresistive transducers.MPU-6050 gyroscopes acceleration transducer is integrated
Three-axis gyroscope, three axis accelerometer, between centers when eliminating artificial combination gyroscope with acceleration transducer are non-orthogonal
Problem, and reduce the difficulty that two sensor signals are mutually corrected.MPU-6050 provides third-party I2C interface, can use
In its outside of connection based on I2The various kinds of sensors such as the magnetoresistive transducer of C interface are very convenient.HMC-5983 magnetoresistive transducers
With high sensitivity and the features such as High Linear precision, it is suitable for measuring the size and Orientation in magnetic field of the earth.
Wireless midair mouse system is broadly divided into two parts：Master signal is gathered and wireless transmission part and wireless receiving
Part, as shown in Figure 1 and Figure 2.Air mouse system master control motor message is gathered mainly includes number with wireless transmission part (Fig. 1)
According to Acquisition Circuit, STM32 control process circuit and radio transmitter, wherein power management chip is provided for whole system module
Power supply supports that USB port can charge for rechargeable battery, also can directly for power management chip is powered.The biography of data acquisition module
Sensor mainly includes the magnetoresistive transducer of six axle gyroscope acceleration transducers and three axles, is responsible for what collection mouse was moved in the air
Attitude data.Data are treated as displacement information corresponding with cursor by the filtering and calculating of STM32 controllers, according to fixed
The good communication protocol rule of justice, launches after it is combined with control information through wireless module.
Radio reception section (Fig. 2) mainly includes wireless receiving module, microcontroller and usb circuit.Wireless USB connects
It is cursor displacement information by SCM system dissection process after receiving end receives the information flow that the distribution of master control wireless transmission section is penetrated
And key information, encoded according still further to USB2.0 agreements, the interactive communication with computer is completed by USB interface, it is final to realize
The function of wireless midair mouse control terminal computer.
Mouse system emitting portion is using ST Microelectronics based on ARM Cortex_M3 architectural frameworks
STM32F103ZET6 chips are used as system core processor, outside extension 8M byte spi bus flash storages and 1M bytes
SRAM memory, and configuration processor minimum system operating circuit and JTAG debugging mouths.System reception part is read by spi bus
The information of wireless receiving module, and the information flow that will be received are taken according to USB2.0 protocol codes, and then are transferred to USB interface,
Realize the interactive communication of mouse and computer.Because receiving portion need not carry out very complicated data processing and calculating, it is only necessary to
The transmission of signal is carried out, therefore directly uses 51 AT89S52 single board computers here as master controller.
Gyroscope and acceleration sensor circuit：
The direct output digit signals of MPU-6050 chips, it is possible to reduce the use of amplifier and A/D chips, reduces cost；Separately
Outward, it is contemplated that the difference of practical application requirement, MPU-6050 allows User Defined programming Control gyroscope and acceleration
The full lattice detection range of the motion of sensor, so as to accurately track the quick of object and act at a slow speed.The full lattice sensing range of gyroscope
It is ± 250, ± 500, ± 1000 and ± 2000o/sec (dps), the full lattice detection model of acceleration transducer of user-programmable control
Enclose is ± 2g, ± 4g, ± 8g and ± 16g.The connection of MPU-6050 circuits is as shown in Figure 3.
Magnetoresistive sensor module：
Three axle magnetoresistive transducers as magnetic field measuring cell, be the chief component of system, it performance quality shadow
Ring the performance and stability of system.This patent selects the axle magnetoresistive transducers of HMC-5983L tri-.Its main feature is as follows：
It is simple with the controller mode of connection, take small volume；In gauss magnetic field, the resolution ratio of 2 milligauss can be reached.
In measurement magnetic field range, maximum output frequency is up to 160Hz；Built-in self-checking function and drive circuit, using easy I2C numerals
EBI, operating voltage is low (2.16V~3.6V), super low-power consumption (100uA)；Set/reset and bias driver are carried, is made
The course angle for obtaining compass accurately reaches 1~2 °.HMC5983 chip application circuit diagrams are as shown in Figure 4.
Wireless communication module circuit：
System realizes the radio communication of mouse displacement and control information using nRF24L01 rf chips.It is work
Make the monolithic wireless transceiver chip of the ISM band in 2.4G~2.5G, including frequency generator, enhanced Shock-Burst
Mode controller, power amplifier, crystal oscillator, modulator and demodulator.
In nRF24L01, transceiver mode is divided into three kinds, is respectively Shock-Burst TM transceiver modes, Enhanced
Shock-Burst TM transceiver modes and direct transceiver mode, the selection of different mode is realized by changing configuration words.This is specially
NRF24L01 configuration works in Enhanced Shock-Burst TM transceiver modes, so can not only be reduced device by profit
Power consumption, moreover it is possible to allow the MCU of low speed to obtain rf data emission rate very high；Residence time is shorter in space for data, resists
Interference is strong, and stability is high；Reduce the average operating current of whole system.NRF24L01 realizes 30 words by SPI serial ports
Save the configuration task of configuration words.
After the completion of the configuration work of Shock-Burst TM, in the nRF24L01 courses of work, it is only necessary to change minimum one
Content in individual byte, can be achieved with the switching between transceiver mode.The communication selection of nRF24L01 and MCU directly uses hardware
SPI interface mode is realized.This SPI connected modes can give full play to the high-efficient characteristic and high speed radio transmission of SPI interface
Advantage, with larger data handling capacity.Its circuit is as shown in Figure 5.
Claims (8)
1. a kind of wireless midair mouse based on STM32 microcontrollers, it is characterised in that including master signal collection and wireless hair
Penetrate part and Radio reception section；
The master signal collection includes three axle magnetoresistive transducers with wireless transmission section point, and three axle magnetoresistive transducers connect six axle tops
Spiral shell instrument and acceleration transducer, six axle gyroscopes and acceleration transducer connection STM32 microcontrollers, STM32 microcontrollers connect
Connect radio transmitter；
The magnetoresistive transducer of three axle and six axle gyroscopes and acceleration transducer are used to gather what mouse was moved in the air
Attitude parameter；
The STM32 microcontrollers are used to obtain the attitude parameter of mouse, and filtering is converted to displacement information corresponding with cursor,
Send to radio transmitter；
The Radio reception section includes wireless receiving module, wireless receiving module connection microcontroller, microcontroller and computer
Connection；
It is light mark that master signal collection and wireless transmission section are distributed incoming information flow dissection process by the microcontroller
Shifting information and key information, retransmit to computer.
2. a kind of wireless midair mouse based on STM32 microcontrollers according to claim 1, it is characterised in that described
Three axle magnetoresistive transducers, six axle gyroscopes and acceleration transducer, STM32 microcontrollers and radio transmitter are by being connected with
The rechargeable battery of power management chip is powered, and rechargeable battery is powered by USB interface；
The wireless receiving module and microcontroller are powered by being connected with the USB interface chip of battery management chip, USB interface
Chip connects computer.
3. a kind of wireless midair mouse based on STM32 microcontrollers according to claim 1, it is characterised in that described
Six axle gyroscopes and acceleration transducer use MPU-6050.
4. a kind of wireless midair mouse based on STM32 microcontrollers according to claim 1, it is characterised in that described
Magnetoresistive transducer uses HMC-5983.
5. a kind of wireless midair mouse based on STM32 microcontrollers according to claim 1, it is characterised in that described
Radio transmitter using the STM32F103ZET6 chips of ARM Cortex_M3 architectural frameworks as system core processor, outward
Portion extends 8M byte spi bus flash storages and 1M byte SRAM memories, and configuration processor minimum system operating circuit
And JTAG debugging mouths.
6. a kind of wireless midair mouse based on STM32 microcontrollers according to claim 1, it is characterised in that described
Microcontroller uses the AT89S52 of 51 single-chip microcomputers.
7. a kind of wireless midair mouse based on STM32 microcontrollers according to claim 1, it is characterised in that described
Between the magnetoresistive transducer of three axles and six axle gyroscopes and acceleration transducer and six axle gyroscopes and acceleration transducer with
Pass through I between STM32 microcontrollers2C buses are connected, and spi bus are passed through between STM32 microcontrollers and wireless transmitter module
Connection.
8. a kind of wireless midair mouse based on STM32 microcontrollers according to claim 1, it is characterised in that described
Connected by spi bus between wireless receiving module and microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620710272.5U CN206209622U (en) | 2016-07-05 | 2016-07-05 | A kind of wireless midair mouse based on STM32 microcontrollers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620710272.5U CN206209622U (en) | 2016-07-05 | 2016-07-05 | A kind of wireless midair mouse based on STM32 microcontrollers |
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| Publication Number | Publication Date |
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| CN206209622U true CN206209622U (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620710272.5U Expired - Fee Related CN206209622U (en) | 2016-07-05 | 2016-07-05 | A kind of wireless midair mouse based on STM32 microcontrollers |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107145881A (en) * | 2017-07-07 | 2017-09-08 | 合肥芯福传感器技术有限公司 | A kind of integrated form phased array fingerprint sensor |
| CN110658925A (en) * | 2019-09-29 | 2020-01-07 | 唐勇 | Handheld wireless mouse positioned by gyroscope |
| CN112439195A (en) * | 2019-08-28 | 2021-03-05 | 华东师范大学 | STM 32-based game implementation system and implementation method |
-
2016
- 2016-07-05 CN CN201620710272.5U patent/CN206209622U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107145881A (en) * | 2017-07-07 | 2017-09-08 | 合肥芯福传感器技术有限公司 | A kind of integrated form phased array fingerprint sensor |
| CN112439195A (en) * | 2019-08-28 | 2021-03-05 | 华东师范大学 | STM 32-based game implementation system and implementation method |
| CN112439195B (en) * | 2019-08-28 | 2022-07-05 | 华东师范大学 | STM 32-based game implementation system and implementation method |
| CN110658925A (en) * | 2019-09-29 | 2020-01-07 | 唐勇 | Handheld wireless mouse positioned by gyroscope |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170531 Termination date: 20170705 |
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| CF01 | Termination of patent right due to non-payment of annual fee |