CN206993393U - A kind of hand-held intelligent equipment and its control system - Google Patents
A kind of hand-held intelligent equipment and its control system Download PDFInfo
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- CN206993393U CN206993393U CN201720818108.0U CN201720818108U CN206993393U CN 206993393 U CN206993393 U CN 206993393U CN 201720818108 U CN201720818108 U CN 201720818108U CN 206993393 U CN206993393 U CN 206993393U
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Abstract
The utility model discloses a kind of hand-held intelligent equipment and its control system, the control system includes 3-axis acceleration sensor and single-chip microcomputer, the acceleration magnitude of each axle of 3-axis acceleration sensor described in the single-chip microcomputer periodic sampling；The acceleration magnitude of each axle of the 3-axis acceleration sensor obtained according to sampling determines the current state of the hand-held intelligent equipment, and send corresponding control signal and corresponding mode of operation is entered according to the control signal received to the hand-held intelligent equipment, the hand-held intelligent equipment.Detection sensitivity of the present utility model is higher, and hardware cost and power consumption are relatively low.
Description
Technical field
It the utility model is related to field of intelligent control, and in particular to a kind of hand-held intelligent equipment and its control system.
Background technology
Intelligent handhold microphone typically has the intelligent control functions such as automatic mute control, pattern switching and power consumption control,
Realize that these intelligent control functions mainly use following three kinds of technical schemes on the market at present：
First, control button is increased.
Its principle be using button enter row mode switching, it is necessary on software increase switching control interface function and its
Implementation method, this mode simply increase handoff functionality, it is also necessary to which really control could be realized by manually carrying out operation, therefore
The technical scheme belongs to semi-automatic control.
2nd, automatically controlled using attitudes vibration.
Its principle is that the attitudes vibration of handheld microphone is identified using attitude transducers such as Together, digital gyroscope or earth inductions,
Handled accordingly according to different postures, be to realize real intelligent automatic control the advantages of this scheme, but still deposit
In following shortcoming：1st, because the oneself power consumption of the chips such as Together, digital gyroscope is big, for using battery powered handheld microphone etc.
Larger power consumption burden, not enough energy-conservation are undoubtedly the increase in for portable product, so as to cause the too fast of battery electric quantity to deplete；2、
Because the sensitivity of attitude detection and the complexity of algorithm are directly proportional, the excessively simple spirit that can then cause attitude detection of software algorithm
Sensitivity and the degree of accuracy are poor, so as to cause control by mistake.The software algorithm mistake of current intelligent handhold microphone most of on the market
In simple, attitude detection sensitivity and the degree of accuracy are poor.
3rd, angular speed variable quantity is detected using Together, digital gyroscope.
The hardware of intelligent handhold microphone is based on digital gyro instrument chip in the program, and its principle is handheld microphone in appearance
State can produce angular speed change when changing, be judged using the variable quantity of this angular speed to carry out posture so as to carry out accordingly
Control process, it is using the high sensitivity of angular speed change the advantages of this scheme, ensure that attitude detection to a certain extent
Sensitivity and the degree of accuracy, but still the defects of power consumption is excessive equally be present with second of technical scheme.Simultaneously as current city
Various gyroscope chips on face are expensive, and production can undoubtedly be greatly increased on this consumer product of handheld microphone by applying
The cost of product, so as to reduce the competitive advantage of product.
In summary, the existing method for realizing intelligent handhold microphone intelligent control function has the following disadvantages：
(1) hardware power consumption is larger；
(2) hardware cost is higher.
Utility model content
Technical problem to be solved in the utility model is that the implementation method of intelligent handhold microphone intelligent control function is deposited
Hardware power consumption is larger and cost is higher the problem of.
In order to solve the above-mentioned technical problem, technical scheme is to provide a kind of hand-held intelligent equipment used by the utility model
Control system, including 3-axis acceleration sensor and single-chip microcomputer, 3-axis acceleration described in the single-chip microcomputer periodic sampling passes
The acceleration magnitude of each axle of sensor；The acceleration magnitude of each axle of the 3-axis acceleration sensor obtained according to sampling determines the hand
The current state of smart machine is held, and sends corresponding control signal to the hand-held intelligent equipment, the hand-held intelligent equipment
Corresponding mode of operation is entered according to the control signal received.
In the above-mentioned technical solutions, any axle of the 3-axis acceleration sensor that the single-chip microcomputer obtains according to sampling
The of ac of acceleration magnitude exceedes predetermined threshold value, and it is hand holding state to determine the hand-held intelligent equipment；It is otherwise, it determines described hand-held
Smart machine shelves state to be static.
In the above-mentioned technical solutions, the of ac of the acceleration magnitude of each axle of 3-axis acceleration sensor is direct current
Amount and the difference of average value, the DC quantity of the axle acceleration value is acceleration magnitude caused by the axle reality, the axle acceleration value
Average value is the average value for multiple acceleration magnitudes that continuous acquisition arrives.
In the above-mentioned technical solutions, each axle of the 3-axis acceleration sensor that the single-chip microcomputer obtains according to sampling
Acceleration magnitude DC quantity, obtain the gravity acceleration value that the 3-axis acceleration sensor is integrally subject to；When the gravity
When acceleration magnitude is less than predetermined threshold value, the hand-held intelligent equipment is determined to fall state.
In the above-mentioned technical solutions, the single-chip microcomputer reaches preset times according to the read-around ratio of sampled value, to the hand
The state of falling for holding smart machine is judged.
In the above-mentioned technical solutions, the single-chip microcomputer opens wireless communication according to the hand holding state of the hand-held intelligent equipment
Number output, audio output and wireless pilot signals, switch to receiver identical ID codes, and start normal output work
Rate, the hand-held intelligent terminal is controlled to enter normal mode of operation.
In the above-mentioned technical solutions, the single-chip microcomputer is sent standby according to the static state of shelving of the hand-held intelligent equipment
Signal, the hand-held intelligent equipment enter standby processing state, and the single-chip microcomputer is according to the hand-held intelligent equipment monitored
The static state of shelving reach standby first stage duration, send standby first stage processing letter to the hand-held intelligent equipment
Number, the hand-held intelligent equipment closes pilot signal and audio and skew according to the standby first stage process signal received
The ID codes of transmitting chip in control system；The single-chip microcomputer shelves state according to the static of hand-held intelligent equipment monitored
Reach standby second stage duration, send off signal to the hand-held intelligent equipment, the hand-held intelligent equipment enters shutdown
Pattern.
In the above-mentioned technical solutions, the single-chip microcomputer falls state according to the hand-held intelligent equipment, and rapid close is led
The ID codes of transmitting chip in frequency signal and audio and deviation control system.
The utility model additionally provides a kind of hand-held intelligent terminal, including above-mentioned control system.
In the above-mentioned technical solutions, the hand-held intelligent equipment is intelligent handhold microphone.
The utility model is using low cost, the 3-axis acceleration sensor and single-chip microcomputer of low-power consumption, 3-axis acceleration sensing
The acceleration magnitude of each axle is sent to single-chip microcomputer, single-chip microcomputer determine hand-held intelligence according to the acceleration magnitude of each axle received in real time by device
Can equipment current state, and send corresponding control signal to hand-held smart machine, hand-held intelligent equipment is according to receiving
Control signal enters corresponding mode of operation, and not only detection sensitivity is higher, and hardware cost and power consumption substantially reduce.
Brief description of the drawings
Fig. 1 is the circuit diagram of the control system hardware components of hand-held intelligent equipment in the utility model；
Fig. 2 is vibration velocity/time waveform figure in the utility model；
Fig. 3 is the hand holding state of hand-held intelligent equipment and the flow of the static detection method for shelving state in the utility model
Figure；
Fig. 4 is the intelligent control process chart of single-chip microcomputer in the utility model.
Embodiment
The utility model is described in detail with reference to specification drawings and specific embodiments.
The utility model embodiment provides a kind of hand-held intelligent equipment and its control system, wherein, hand-held intelligent equipment
Control system hardware components circuit diagram as shown in figure 1, including 3-axis acceleration sensor 1 and single-chip microcomputer 2, single-chip microcomputer 2
The acceleration magnitude of 1 each axle of periodic sampling 3-axis acceleration sensor；The 1 each axle of 3-axis acceleration sensor obtained according to sampling
Acceleration magnitude determines the current state of hand-held intelligent equipment, and controls hand-held intelligent equipment to enter corresponding mode of operation.
General 3-axis acceleration sensor 1 typically is provided with SPI interface (Serial PeripheralInterface, string
Row Peripheral Interface) and I2C interface (Inter-Integrated Circuit, I2C EBI), one is selected during application,
The utility model embodiment realizes that 3-axis acceleration sensor 1 and the data of the data of single-chip microcomputer 2 are led to preferably by I2C interface
Letter.
Because the SDA (serial data line) and SCL (serial time clock line) of 3-axis acceleration sensor 1 are two-way I/O lines
And open-drain output, it is necessary to power supply VCC is connect by pull-up resistor, therefore, in Fig. 1 uses two resistances as on the first of 10K ohms
Pull-up resistor R1 and the second pull-up resistor R2.
The Control System Software part design for the hand-held intelligent equipment that the utility model embodiment provides is as follows：
The control system of the utility model embodiment substantially utilizes low cost, the 3-axis acceleration sensor of low-power consumption
1 and single-chip microcomputer 2 design a hypersensitivity vibrating sensor, the hypersensitivity vibrating sensor be used for detect and identify
The current state of hand-held intelligent equipment, as hand holding state, it is static shelve state or fall state, and control hand-held intelligent equipment
Into corresponding mode of operation.
Upheaval occurs for the substantially object of vibration, shows as the change back and forth that object produces displacement in the range of certain space
Change, this process can also produce the velocity variations of object simultaneously, therefore vibration processes can be resolved into very little one by one when
Between section, when the period is sufficiently small, object can be approximated to be even acceleration or uniformly retarded motion, such as Fig. 2 in each minor time slice
It is shown, if object carves t at the beginning of a certain minor time slice0Velocity amplitude is v0, finish time minor time slice t1Velocity amplitude is v1,
Then this t1—t0Acceleration a in this minor time slice is expressed as：A=(v1-v0)/(t1-t0)。
From above-mentioned acceleration a formula, percentage speed variation of the object within some minor time slice is bigger, then accelerates
Angle value is bigger, and object vibration is stronger, in each minor time slice, shows as the acceleration magnitude that percentage speed variation is bigger, samples
It is bigger.
The sampling period of the acceleration magnitude of hypersensitivity vibrating sensor in the utility model embodiment is set to T,
This cycle T is regarded as above-mentioned each minor time slice, the 3-axis acceleration sensor 1 periodically read by I2C interface
The acceleration magnitudes of the axles of X/Y/Z tri- be set to gxdc、gydc、gzdc.Due to gxdc、gydc、gzdcFor the absolute value of acceleration, phase
When in DC quantity, acceleration magnitude can change with the direction change of 3-axis acceleration sensor 1, for ease of counting statistics, this reality
The DC quantity is converted into of ac with new embodiment, specific practice is：
Cumulative mean periodically is carried out to the acceleration magnitude of continuous N number of collection point, if this average value is respectively gxave、
gyave、gzave, then the DC quantity and the difference of the average value are of ac, and adding for each axle can be calculated using below equation
The of ac of velocity amplitude, is set to gxac、gyac、gzac：
gxac=| gxdc-gxave|
gyac=| gydc-gyave|
gzac=| gzdc-gzave|
Utilize the of ac gx of the acceleration magnitude of each axleac、gyac、gzacIt can determine whether oscillation intensity size, the acceleration of each axle
The of ac of angle value is bigger, then oscillation intensity or severe degree are bigger.
Identical threshold value is pre-set according to of ac of the actual control system for the acceleration magnitude of each axle, when any axle
When the of ac of acceleration magnitude exceedes this predetermined threshold value, you can it is hand holding state to determine the hand-held intelligent equipment, and otherwise determining should
Hand-held intelligent equipment shelves state to be static, and specific implementation code is as follows：
As shown in figure 3, the hand holding state of hand-held intelligent equipment and the static detection method for shelving state specifically include it is following
Step：
S10, initialization I2C interface.
S11, initialization 3-axis acceleration sensor.
S12, each axle of single-chip microcomputer periodic sampling 3-axis acceleration sensor acceleration magnitude.
S13, single-chip microcomputer statistics calculate the of ac of the acceleration magnitude of each axle of 3-axis acceleration sensor.
S14, judge whether the of ac of acceleration magnitude of any axle exceedes predetermined threshold value, if so, then turning S15；Otherwise, turn
S16。
S15, determine that hand-held intelligent equipment is hand holding state, turn S12.
S16, determine that hand-held intelligent equipment shelves state to be static, turn S12.
By a large amount of and long-time actual test, method for detecting vibration can detect used by the utility model embodiment
The dither state extremely slight to human hand.
The state-detection principle of falling of the hand-held intelligent equipment of the utility model embodiment is：
The utility model embodiment can easily detect falling for hand-held intelligent equipment using 3-axis acceleration sensor 1
Fall state, 3-axis acceleration sensor 1 is in static or at the uniform velocity state by 1 acceleration of gravity, X, Y and Z axis of output
The space vector modulus value of acceleration magnitude synthesis is 9.8m/s2Data.
If the DC quantity of the acceleration magnitude of the axle of X, Y and Z tri- of 3-axis acceleration sensor 1 is respectively gxdc、gydc、gzdc,
It is overall by 1 acceleration of gravity when 3-axis acceleration sensor 1 is in static or at the uniform velocity state, i.e.,
When 3-axis acceleration sensor 1 is in freely falling body or falls state, the gravity acceleration g that is integrally subject to
Value is close to 0, i.e.,Default one close to 0 acceleration of gravity threshold value, when gravity plus
When speed g value is less than or equal to this pre-set threshold value, determine that hand-held intelligent equipment falls state for weightlessness.In addition, in order to anti-
Only false triggering, the gravity that the 3-axis acceleration sensor that the utility model embodiment samples to obtain to single-chip microcomputer is integrally subject to accelerate
Angle value has carried out filtering process, only when the read-around ratio of single-chip microcomputer sampled value reaches preset times, just to holding smart machine
State of falling judged.Realize that code is as follows in part：
Below so that hand-held intelligent equipment is intelligent handhold microphone as an example, the realization principle of the utility model embodiment is entered
Row describes in detail, as shown in figure 4, being specially：
When intelligent handhold microphone is in hand holding state, user holds microphone and arbitrarily can speak or sing, monolithic
Machine opens wireless signal output, audio output and wireless pilot signals according to the hand holding state of handheld microphone, switch to
Handheld microphone receiver identical ID codes, and start normal power output, control handheld microphone enters normal work mould
Formula.
When handheld microphone it is static shelve state when, handheld microphone is not held by a user, not in the use of user
State, now single-chip microcomputer control handheld microphone enters holding state, in order to prevent the maloperation of control system and short time
Interior user picks up the situation that microphone is reused, and single-chip microcomputer 2 needs to monitor the static duration shelved of handheld microphone.
When handheld microphone by it is continuous it is static shelve a period of time after, single-chip microcomputer 2 monitors that the static of handheld microphone is put
Configuration state reaches standby first stage duration, and standby first stage process signal, handheld microphone root are sent to handheld microphone
Transmitting chip in pilot signal and audio and deviation control system is closed according to the standby first stage process signal received
ID codes, including close pilot signal, offset launch ID codes, close audio, so as to reducing transmission power, save power supply etc.,
It also prevent receiver simultaneously and receive useless audio signal and cause the influence of rear class hardware system or the discomfort of user.
After the standby first stage is handled, if single-chip microcomputer 2 monitor handheld microphone continue to lie on the table one section it is long
Time, then show that user for a long time not using handheld microphone, reaches standby when the time of shelving of handheld microphone
After second stage duration, the processing routine of single-chip microcomputer 2 can enter second stage and handle, and single-chip microcomputer 2 controls handheld microphone to enter
Shutdown mode, so as to which now single-chip microcomputer can close the power supply of whole control system, it on the one hand can reach the effect of economize on electricity environmental protection
Fruit, user secondly can also be avoided without using forgetting that closing power supply causes the consume of battery electric quantity after handheld microphone.
When handheld microphone is falling state：Typically user does not hold handheld microphone with a firm grip or other reasons cause hand
Hold microphone and depart from human hand and fall, after falling state and occurring, single-chip microcomputer 2 sends rapidly shutdown signal, handheld microphone according to
The shutdown signal received closes rapidly the ID codes of transmitting chip in pilot signal, deviation control system and closes audio etc.
Deng so as to avoid the powerful impact sound that microphone is sent when hitting the obstacles such as ground, reducing to rear class sound amplification system
Influence, while it is uncomfortable to also prevent Consumer's Experience caused by burst impact sound.
The utility model embodiment additionally provides a kind of hand-held intelligent equipment, including above-mentioned control system.
The utility model embodiment has the following advantages that：
(1) it is detected as controlling foundation with vibration and weightlessness.
The utility model embodiment presets hand-held intelligent equipment has following three kinds of states in use：
First, hand holding state, from the point of view of physiological angle, always there is jitter in human hand, be become apparent in hand-held article, this
The handshaking amplitude of kind physiological is small and irregular, and general vibration frequency is within 1Khz, and therefore, this programme is designed a kind of super
High-sensitivity vibration sensor is handshaking to capture this physiological, when human hand holds microphone, if vibrating sensor detects
The oscillation intensity arrived is more than certain threshold value, then confirms that microphone is hand holding state.
2nd, state is shelved, is shelved when microphone is static, and the shockproofness that vibrating sensor detects is less than certain threshold value
When, then confirm that microphone shelves state to be static.
3rd, abnormal to fall state, unexpected to slide microphone from hand due to reasons such as user's errors, this slides process
In, microphone is in abnormal and falls state, and the utility model embodiment by obtaining the gravity of 3-axis acceleration sensor in real time
Acceleration magnitude, and the space vector on three directions (X-axis/Y-axis/Z-direction, i.e. front and rear/left and right/above-below direction) is calculated, should
The modulus value of space vector is the overall acceleration of gravity that microphone is subject to, and when this acceleration of gravity is close to threshold value 0, is then confirmed
Microphone is to fall state.
(2) vibration detection high sensitivity.
The oscillation intensity of object is directly proportional to the gravity acceleration value that its own is subject to, and oscillation intensity is bigger, self gravitation
Acceleration magnitude is bigger, and the utility model embodiment utilizes acceleration information caused by highly sensitive 3-axis acceleration sensor
Sampled, through the specific testing result for calculating processing and can obtain hypersensitivity.
(3) the directionless requirement of vibration detection.
The utility model embodiment uses 3-axis acceleration sensor, has independent acceleration on the direction of principal axis of X/Y/Z tri-
Detecting system is spent, because three direction of principal axis are spatially orthogonal, the utility model embodiment can be independent for each direction of principal axis respectively
Result of oscillation is calculated, so as to reach the directionless effect for requiring detection.
(4) hardware cost is relatively low.
The utility model embodiment use 3-axis acceleration sensor compared to other attitude detecting sensors such as gyroscope,
The prices of the chips such as earth induction is low, peripheral components are few, general hardware cost substantially reduces.
(5) hardware power consumption is low.
The power consumption for the 3-axis acceleration sensor that the utility model embodiment uses is generally relatively low, and power consumption electric current is not higher than
1mA, several mA compared to chips such as other gyroscopes are even greater than 10mA current power dissipation, and the utility model embodiment more saves
Environmental protection.
(6) possess and fall detection function.
The utility model embodiment is increased to fall detection function, can be closed and sent out by single-chip microcomputer when microphone falls extremely
Penetrate signal, switching pilot signal, the ID codes for switching transmitting chip, close sound output, so as to avoid microphone from hitting from dropping into
Powerful impact sound is sent when hitting the obstacles such as ground, and reduces the influence of rear class sound amplification system, while also prevent burst and touch
It is uncomfortable to hit Consumer's Experience caused by sound.
The utility model is not limited to above-mentioned preferred forms, anyone knot made under enlightenment of the present utility model
Structure changes, every to have same or like technical scheme with the utility model, each fall within the scope of protection of the utility model it
It is interior.
Claims (10)
1. a kind of control system of hand-held intelligent equipment, it is characterised in that including 3-axis acceleration sensor and single-chip microcomputer, institute
State the acceleration magnitude of each axle of 3-axis acceleration sensor described in single-chip microcomputer periodic sampling；Three axle obtained according to sampling accelerates
The acceleration magnitude of degree each axle of sensor determines the current state of the hand-held intelligent equipment, and sends corresponding control signal to institute
Hand-held intelligent equipment is stated, the hand-held intelligent equipment enters corresponding mode of operation according to the control signal received.
2. the control system of hand-held intelligent equipment as claimed in claim 1, it is characterised in that the single-chip microcomputer is according to sampling
The of ac of the acceleration magnitude of any axle of the 3-axis acceleration sensor arrived exceedes predetermined threshold value, determines the hand-held intelligent
Equipment is hand holding state；Otherwise, it determines the hand-held intelligent equipment shelves state to be static.
3. the control system of hand-held intelligent equipment as claimed in claim 2, it is characterised in that the 3-axis acceleration sensor
The of ac of the acceleration magnitude of each axle is DC quantity and the difference of average value, and the DC quantity of the axle acceleration value is real for the axle
Acceleration magnitude caused by border, the average value of the axle acceleration value are the average value for multiple acceleration magnitudes that continuous acquisition arrives.
4. the control system of hand-held intelligent equipment as claimed in claim 3, it is characterised in that the single-chip microcomputer is according to sampling
The DC quantity of the acceleration magnitude of each axle of the 3-axis acceleration sensor arrived, it is overall to obtain the 3-axis acceleration sensor
The gravity acceleration value being subject to；When the gravity acceleration value is less than predetermined threshold value, the hand-held intelligent equipment is determined to fall
Fall state.
5. the control system of hand-held intelligent equipment as claimed in claim 4, it is characterised in that the single-chip microcomputer is according to sampled value
Read-around ratio reach preset times, the state of falling of the hand-held intelligent equipment is judged.
6. the control system of hand-held intelligent equipment as claimed in claim 2, it is characterised in that the single-chip microcomputer is according to the hand
Hold the hand holding state of smart machine, open wireless signal output, audio output and wireless pilot signals, switch to and receiver
Identical ID codes, and start normal power output, control the hand-held intelligent terminal to enter normal mode of operation.
7. the control system of hand-held intelligent equipment as claimed in claim 2, it is characterised in that the single-chip microcomputer is according to the hand
The static state of shelving for holding smart machine sends standby signal, and the hand-held intelligent equipment enters standby processing state, the list
Piece machine reaches standby first stage duration according to the static state of shelving of the hand-held intelligent equipment monitored, is held to described
Smart machine sends standby first stage process signal, and the hand-held intelligent equipment is handled according to the standby first stage received
The ID codes of transmitting chip in signal-off pilot signal and audio and deviation control system；The single-chip microcomputer is according to monitoring
The static state of shelving of the hand-held intelligent equipment reaches standby second stage duration, sends and shuts down to the hand-held intelligent equipment
Signal, the hand-held intelligent equipment enter shutdown mode.
8. the control system of hand-held intelligent equipment as claimed in claim 4, it is characterised in that the single-chip microcomputer is according to the hand
That holds smart machine falls state, the rapid ID codes for closing transmitting chip in pilot signal and audio and deviation control system.
9. a kind of hand-held intelligent equipment, it is characterised in that including the control system as described in claim any one of 1-8.
10. hand-held intelligent equipment as claimed in claim 9, it is characterised in that the hand-held intelligent equipment is intelligent handhold wheat
Gram wind.
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| CN107182007A (en) * | 2017-07-07 | 2017-09-19 | 岑思华 | A kind of hand-held intelligent equipment and its control system |
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| CN107182007A (en) * | 2017-07-07 | 2017-09-19 | 岑思华 | A kind of hand-held intelligent equipment and its control system |
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