CN106406160A

CN106406160A - Head posture based eye using distance collecting device and method

Info

Publication number: CN106406160A
Application number: CN201610588716.7A
Authority: CN
Inventors: 胡渐佳
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-07-27
Filing date: 2016-07-25
Publication date: 2017-02-15

Abstract

The invention relates to a head posture based eye using distance collecting and recording device and method. The device is characterized in that a head posture sensor collects head posture signals and transmits the collected head posture signals to a processor; if the current head posture stays at a set range, the processor controls an eye using distance sensor to collect the eye using distance and transmits the collected eye using distance to a memory to record; when the head posture changes, and the processor calculates the head posture stabilization time to act as the eye using distance duration time and transmits the eye using distance duration time to the memory to record. The eye using distance are controlled through head postures, when the head posture is downward overlooking and stays at a writing and reading posture, a distance measuring sensor is controlled to collect the eye using distance, so that useless collection and recording for the eye using distance at the states of looking at the front horizontally or looking up or the like can be avoided. Meanwhile, the eye using distance changes only when the head posture changes, repeated collection and recording for the eye using distance are avoided, the storage space is saved through the point-line combination mode of eye using distance recording and duration time recording, and follow-up data processing is facilitated.

Description

Use eye distance based on head pose is from harvester and method

Technical field

The present invention relates to a kind of use eye distance based on head pose is from harvester and method.

Background technology

Children's control is relatively poor, and in learning process, some bad habits often in sitting posture, such as Abnormal sitting posture, during reading writing with eye distance close to too etc..If being acquired to Students ' Learning sitting posture recording, reflection exists Problem, can effectively help the growth of children.Wearable device is because by volumetric constraint, battery durable ability is limited how It is crucial for reducing power consumption, meanwhile, data to the collection of multiple sensors, if record data is excessive, accumulate over time, data Amount is increasing, is not easy to storage and subsequent treatment analysis.

Content of the invention

It is an object of the invention to provide a kind of use eye distance based on head pose is from harvester and method, by head appearance State control eye distance from acquisition and recording, reducing energy consumption, simplify data record.

Present disclosure, a kind of use eye distance based on head pose from harvester, including：Wear-type framework, is placed in Head pose sensor on framework, use eye range sensor, microprocessor, memory, it is characterized in that head pose sensor Collection head attitude signal, transmits microprocessor；If current head attitude is in setting range, microprocessor control eye distance From sensor collection eye distance from transmission memory record；When head pose changes, microprocessor calculates this head appearance The state stable time, use eye distance from the duration as this, transmit memory record；If current head attitude is still in setting Determine scope, microprocessor control with the eye range sensor new use eye distance of collection from, a memory record new round use eye distance from And the duration.

Another content of the present invention, from acquisition and recording method, its feature includes head to a kind of use eye distance based on head pose Portion's attitude transducer collection head attitude signal；If current head attitude is in setting range, controls and use eye range sensor Acquisition and recording eye distance from；When head pose changes, record this head pose stable time, use eye distance as this From the duration；If current head attitude, still in setting range, controls the use eye gathering a new round with eye range sensor Distance, record a new round use eye distance from and the duration.

The present invention pass through head pose control eye distance from acquisition and recording, head attitude transducer as first sense Device, the collection of head pose data runs through whole recording process, with eye range sensor as second sensor, according to head appearance The state of state, change collection eye range data.Because head pose biosensor power consumption relative distance sensor is relatively low, can save Electricity；Two kinds of data cooperations, can filter secondary interference data, such as, when head pose is overlooked downwards, be in appearance of reading and writing During state, with eye distance from close to, control distance measuring sensor collection eye distance from can avoid looking squarely, look up etc. and using eye long distance under state From useless collection and record, only head pose changes simultaneously, with eye distance from just changing, it is to avoid with eye distance from Repeated acquisition and record, by record eye distance from point this with its duration, line combination, save memory space, And it is easy to follow-up data process.

Brief description

Fig. 1 is the configuration block diagram with eye distance from harvester.

Fig. 2 is from Acquisition Circuit principle schematic with eye distance.

Fig. 3 is head pose Acquisition Circuit principle schematic.

Fig. 4 is from acquisition and recording control flow chart with eye distance.

Specific embodiment

Configuration block in figure shown in Fig. 1, including head pose sensor, uses eye range sensor, microprocessor, storage Device, microprocessor is connected with head pose sensor, with eye range sensor, memory respectively.Head pose sensor gathers Head pose data is sent to microprocessor analysis and processes；Microprocessor is according to head pose Data Control eye range sensor Collection eye range data, transmits memory storage.

Described head pose data includes one or more of head inclination angle, face orientation.Head pose sensor bag Include one or more of acceleration transducer, gyroscope, geomagnetic sensor, include infrared distance measuring with eye range sensor Any one in instrument, ultrasonic range finder, laser range finder.Separately below head is monitored by ADXL345 acceleration transducer Attitude, GP2D12 infrared ambulator monitoring eye distance from as a example, the specific embodiment of the present invention, wherein microprocessor are described Using the ADuC7024 with memory, it is programmed by UART, SW2 and SW3 is to reset and lower load switch respectively, and SW1 is Power switch.It is shown that communication connection in circuits below principle schematic, do not show decoupling and all connections.

In the circuit theory schematic diagram using eye range sensor shown in Fig. 2, the detection of infrared distance sensor GP2D12 Scope 10 ~ 80cm, the analog voltage of corresponding output 2.55 ~ 0.42V, range finding is inversely proportional to voltage.Microprocessor ADuC7024's Analog input end ADC4 is connected with the output end vo ut of infrared distance sensor GP2D12, receives infrared distance sensor GP2D12 The analog signal of output.The analog voltage of infrared distance sensor GP2D12 input, through microprocessor ADuC7024 internal conversion Become digital voltage.

In the circuit catenation principle schematic diagram of acceleration transducer shown in Fig. 3, microprocessor ADuC7024 and numeral add Velocity sensor ADXL345 is communicated by 4 wire types SPI, and pin 8,9 is to interrupt control.Acceleration transducer ADXL345 puts In head, for monitoring head pose, when head run-off the straight, gravity is in the weight component output letter of tri- axial directions of X, Y, Z Number change, the size of output is relevant with the angle of vertical direction with 3 axial directions, axially less with the angle of vertical direction, Its output is bigger, conversely, output is less.By the weight component sizes of 3 axial outputs, can release 3 axial directions with Vertical direction angle, thus calculate head obliquity information.

Head pose sensor gathers head attitude signal；If current head attitude is in setting range, control eye Range sensor acquisition and recording eye distance from；When head pose changes, the time stable for this head pose, as this Secondary use eye distance is from the duration；If current head attitude is still in setting range, controls and use eye range sensor acquisition and recording The use eye distance of a new round from and the duration.Using eye distance from acquisition and recording control flow in figure shown in Fig. 4, concrete steps are such as Under：

<1>Head attitude signal is gathered by head pose sensor, enters next step；

<2>Judge whether current head attitude is in setting range？If it is, entrance next step, if not, proceed to step<6 >；

<3>Judge whether current head attitude changes, if not, entering next step, if it is, proceeding to step<6>；

<4>Judge under current head attitude the need of collection eye distance from that is, whether times of collection N is less than setting value K？As It is really, i.e. N<K, enters next step, if not, i.e. N>=K, proceeds to step<1>；

<5>Collection currently uses eye distance from making times of collection N=N+1, proceed to step<1>；

<6>Judge whether to gather with eye distance from i.e. times of collection N>0？If it is, entrance next step, if not, proceed to step Suddenly<1>；

<7>Record eye distance from and the duration, make times of collection N=0, proceed to step<1>.

Described head pose setting range includes head pose when writing or reading, now use eye distance from close to, belong to use Eye distance is from monitoring range, it is to avoid looking squarely, the long-distance acquisition and recording of state such as looks up, and then saves power supply and memory space.

Described head pose changes and is more than given threshold including head pose fluctuation, or head pose data is by one Segment identifier section falls into another segmentation section.Described change includes having N number of data to change in M head attitude data, or N period data is had to change in continuous N period head pose data, wherein, M is more than N, N is continuously or discontinuously.Work as head Attitude is overlooked downwards, is in when reading and writing attitude, calculates M（As 5,10 ...）Head pose statistical average, or calculate M Period（As 5,10 seconds ...）Head pose statistical average, if there is the poor absolute value of N number of data and mean value in this M data I.e. fluctuation is all higher than having in setting value, or M period data the poor absolute value of N period data and mean value to fluctuate and is all higher than setting Definite value it is possible to determine that head pose changes, control with eye range sensor collection eye distance from.If setting head pose Piecewise interval, when having N number of data to fall in new section, or having N in M period head pose data in M head attitude data Segment data falls in new section it can be determined that head pose changes.Judge its change according to multiple head pose data, can To avoid single abnormal head attitude data, or the impact that the head pose abnormal data occurring once in a while causes.After changing The change of head pose judges, can carry out statistical analysis to new gathered data it is also possible to the N number of number in a upper attitude Carry out statistical analysis according to as new attitude data.

The described duration includes the start and end time of current head attitude, or current head attitude beginning and end Collection order, or current head attitude stabilization duration, or current head attitude accumulative collection frequency.If during head pose collection Between be spaced and immobilize, the product at collection order and acquisition time interval is it is simply that cumulative time since collection order starts Length.Time that collection starts once it is determined that, acquisition time thereafter just can be converted by collection order, gathers twice The difference of order is collection frequency, and the product with acquisition interval is accumulative duration.The stabilization time of present invention head pose, reflection Use eye distance under this attitude is from the retention time, simple.

Setting value K is a head attitude stabilization period with eye distance from maximum times of collection, and minimum of a value is 1.By changing Setting value K, can adjust in one use eye distance stablized in the period of head pose from times of collection, when being stablized according to head pose Between length adjustment K value size, long when the head attitude stabilization time, many collections therebetween several times with eye distance from recording this several times Use eye distance average.

Optimize further, described harvester also includes data transmission module, by wired or wireless way memory Middle record data is transferred to ancillary equipment.Data transmission module can be the media such as storage card, directly transmits record data, or passes Defeated module passes through the wired modes such as RS232 or USB, or is passed with bluetooth or the wireless mode such as radio frequency or zigbee or wifi technology Defeated record data is processed to ancillary equipment such as the webserver, mobile phone or PCs.

Optimize further, described device includes alarm set, when head pose or with eye distance from beyond set prompting value When, microprocessor starts alarm set.Alarm set can be light, sound, vibrations, micro-electrical stimulation, bone conduction technology etc., Fig. 2, In Fig. 3, microprocessor starts LED and brightens.

Claims

1. a kind of use eye distance based on head pose is from harvester, including：Wear-type framework, is placed in the head pose on framework Sensor, use eye range sensor, processor, memory, it is characterized in that：

（1）Head pose sensor gathers head attitude signal, and transmission microprocessor analysis are processed；

（2）If current head attitude is in setting range, microprocessor control eye range sensor collection eye distance is from biography Memory record is sent to preserve；

（3）When head pose changes, microprocessor calculates this head pose stable time, as this use eye distance from Duration, transmit memory record；

（4）If the head pose after change is still in setting range, microprocessor controls new with the collection of eye range sensor With eye distance from, a memory record new round use eye distance from and the duration.

2. harvester according to claim 1, is characterized in that：When described head pose setting range includes writing or reading Head pose.

3. harvester according to claim 1, is characterized in that：Described head pose changes including head pose fluctuation More than given threshold, or head pose data falls into another segmentation section by a segment identifier section.

4. harvester according to claim 1 or 3, is characterized in that：Described change includes there is N in M head attitude data Individual data changes, or has N period data to change in continuous N period head pose data, and wherein, M is more than N, and N is even Continuous or discontinuous.

5. harvester according to claim 1, is characterized in that：The described time includes the beginning and end of current head attitude Time, or the collection order of current head attitude beginning and end, or current head attitude stabilization duration, or current head attitude Accumulative collection frequency.

6. harvester according to claim 1, is characterized in that：Described head pose sensor include acceleration transducer, One or more of gyroscope, geomagnetic sensor.

7. harvester according to claim 1, is characterized in that：Described use eye range sensor include infrared ambulator, Any one in ultrasonic range finder, laser range finder.

8. harvester according to claim 1, is characterized in that：Described harvester also includes data transmission module, passes through Wired or wireless way is transferred to ancillary equipment record data in memory.

9. harvester according to claim 1, is characterized in that：Described tape deck also includes alarm set, when head appearance State or with eye distance from beyond given threshold, processor triggers alarm set.

10. from acquisition method, its feature includes a kind of use eye distance based on head pose：

（1）Head pose sensor gathers head attitude signal；

（2）If current head attitude is in setting range, control with eye range sensor acquisition and recording eye distance from；

（3）When head pose changes, record this head pose stable time, as this use eye distance from lasting when Between；

（4）If the head pose after change, still in setting range, controls the use eye gathering a new round with eye range sensor Distance, record a new round use eye distance from and the duration.