CN201499223U - Digital camera with function of pedometer - Google Patents
Digital camera with function of pedometer Download PDFInfo
- Publication number
- CN201499223U CN201499223U CN2009203098114U CN200920309811U CN201499223U CN 201499223 U CN201499223 U CN 201499223U CN 2009203098114 U CN2009203098114 U CN 2009203098114U CN 200920309811 U CN200920309811 U CN 200920309811U CN 201499223 U CN201499223 U CN 201499223U
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- digital camera
- acceleration
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- pedometer
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Abstract
The utility model discloses a digital camera with the function of a pedometer, which is realized by the technical scheme that a digital signal central processing unit is respectively connected with an acceleration sensor ADXL345, a switch key, functional keys and an LCD display screen by circuits. The utility model adds an important auxiliary function for the digital camera, can record the parameters of the step number and the like during movement, displays various kinds of movement information and is suitable for people who carry out physical training frequently to use.
Description
Technical field
The utility model relates to digital camera field, more particularly, relates to a kind of digital camera with function of passometer by using.
Background technology
Along with the development of camera technique, the size of camera is more and more littler, more and more has portability, has broken away from original big and heavy image.Functions such as the function of digital camera is also more and more comprehensive when portability increases, and the camera that for example has has added the MP3 function, and the camera that has adds WIFI, and is infrared.
The utility model content
Technical problem to be solved in the utility model is, overcomes the deficiencies in the prior art, and a kind of digital camera with function of passometer by using is provided.
The utlity model has the digital camera of function of passometer by using, be achieved by following technical proposals, comprise the digital signal central processing unit, it is characterized in that described digital signal central processing unit connects acceleration transducer ADXL345, switch key, function button and LCD display by circuit respectively.
The utility model is that digital camera has increased an important miscellaneous function, and the parameters such as step number in the time of can writing down motion show various movable informations, and the crowd who is suitable for often taking exercises uses.
Description of drawings
Fig. 1 is the utility model theory diagram.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
As shown in Figure 1, described digital signal central processing unit connects acceleration transducer ADXL345, switch key, function button and LCD display by circuit respectively; Described switch key connects acceleration transducer ADXL345.ADXL345 sends to the acceleration information that collects among the DSP and handles, and DSP control whole system operation also detects step count information and delivers to LCD and show from the data that ADXL345 receives; The external control button carries out switching on and shutting down control and function selecting.Power unit provides operating voltage to each operating circuit, guarantees the operate as normal of camera.
The main miscellaneous function of the utility model is to detect step number, determines the distance of passing by by predefined stride simultaneously.Stride information can by the statistical survey mode or directly the mensuration mode obtain.Simultaneously the DSP by camera inside can also according to certain formula calculate that human body consume at the volley heat, show timely by liquid crystal display screen, improve user's experience.
All in motion, their motion all can produce relevant acceleration, and can a peak value be arranged at certain point for pin, leg, waist when human body is walked about, arm.It is more convenient to measure numeric ratio with the acceleration on the pin, but considers user's custom, in general still adopts waist to measure actual acceleration.When stepping a step, waist can produce the peak value of an acceleration, can obtain the data of step number by the number of statistics acceleration peak value.
According to statistics, the acceleration that people walking is is between ± 1g, consider the influence of other factors and error again, about between ± the 2g, can select to use the ADXL345 chip to come sense acceleration greatly, ADXL202 is a kind of low-power consumption, the three dimension acceleration sensor of U.S. AD company, can export the acceleration information that counts on by the SPI communication interface, this information can be need not A/D convertor circuit or other special circuit by the DSP Direct Recognition, saves system resource.The acceleration detection scope of chip can be set at respectively by software ± and 2,4,6,8g.The big more corresponding precision of scope is also low more, and the acceleration situation that produces when walking about according to human body can be set at the acceleration measurement range of chip ± 2g, both can satisfy the requirement that acceleration is measured, the precision that the raising that also can try one's best detects.
ADXL345 can export X, Y, Z three road signals, though the acceleration on our the measuring vertical direction, but because the attitude that camera is put during the step at meter is not completely specified, promptly may be with pose work arbitrarily, so we need three tunnel outputs of measured chip, the actual acceleration when coming COMPREHENSIVE CALCULATING to go out to walk by the value of three tunnel outputs.Show that according to data the frequency of people's walking generally goes on foot/minute (1.8Hz) 110, the frequency during running can not surpass 5Hz, selects the sample frequency of 50Hz can react acceleration change more exactly.These two parameters can come the value in the register in the setting chip to realize by spi bus.
After collecting acceleration information, the number that also needs to judge acceleration peak value is judged the step number of passing by, this is to need to set a threshold value, because under the situation of motion, may have various unexpected interference, sensor acquisition to acceleration information can not meet fully with the step number that steps, unwanted interference signal is arranged certainly, at this moment just need this a part of interference signal be omitted by the accekeration of setting certain thresholding, DSP is in the time of the identification chip output signal, those signals that are lower than threshold value are directly ignored, only add up the number of pulses that those surpass threshold value, obtain the actual step number of walking.
After having gathered these data, DSP can show outputing on the lcd screen by calculating after these data processing, step number that the user steps in the time of just can seeing running intuitively and mobile distance, in addition can also be on the basis that shows step number, body weight according to prior setting, parameters such as sex show the data such as calorie that consume in the process of running, and provide more information to the user.
Claims (1)
1. the digital camera with function of passometer by using comprises the digital signal central processing unit, it is characterized in that, described digital signal central processing unit connects acceleration transducer ADXL345, switch key, function button and LCD display by circuit respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203098114U CN201499223U (en) | 2009-09-08 | 2009-09-08 | Digital camera with function of pedometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203098114U CN201499223U (en) | 2009-09-08 | 2009-09-08 | Digital camera with function of pedometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201499223U true CN201499223U (en) | 2010-06-02 |
Family
ID=42442417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203098114U Expired - Fee Related CN201499223U (en) | 2009-09-08 | 2009-09-08 | Digital camera with function of pedometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201499223U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017504A (en) * | 2016-07-04 | 2016-10-12 | 紫光股份有限公司 | Step counting device based on ankle movement speed detection |
-
2009
- 2009-09-08 CN CN2009203098114U patent/CN201499223U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017504A (en) * | 2016-07-04 | 2016-10-12 | 紫光股份有限公司 | Step counting device based on ankle movement speed detection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20130908 |