CN101982728A - Length measuring device arranged in portable electronic equipment - Google Patents
Length measuring device arranged in portable electronic equipment Download PDFInfo
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- CN101982728A CN101982728A CN 201010292295 CN201010292295A CN101982728A CN 101982728 A CN101982728 A CN 101982728A CN 201010292295 CN201010292295 CN 201010292295 CN 201010292295 A CN201010292295 A CN 201010292295A CN 101982728 A CN101982728 A CN 101982728A
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- portable electric
- electric appts
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- length
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Abstract
The invention relates to a length measuring device arranged in portable electronic equipment. The length measuring device comprises a circular roller, wherein the roller comprises an even number of equant sectors which are solid or hollow, and the solid and hollow sectors are arranged alternately; both sides of the circular roller are respectively provided with an infrared transmitting tube and an infrared receiving tube; and the infrared transmitting tube and the infrared receiving tube are controlled to be on and off by the central processing unit (CPU) of the portable electronic equipment. The invention has the advantages of ingenious design, low cost, simple operation and high reliability, can facilitate people to measure the object in a convenient and quick way, and also widens the functions of the portable electronic equipment, such as mobile phones and the like.
Description
Technical field
The present invention relates to moving communicating field, more particularly, relate to a kind of device of measuring length in the portable electric appts that is arranged on.
Background technology
People often have the demand of measuring certain object length in life, but since can not at every moment all be with a ruler on one's body, so very inconvenient.But present people nearly all have a kind of portable type electronic product on one's body, such as mobile phone, will bring great convenience for this demand of people if mobile phone has this function.
Summary of the invention
The technical problem to be solved in the present invention is, at the above-mentioned defective of prior art, provides a kind of device of measuring length in the portable electric appts that is arranged on.
The technical solution adopted for the present invention to solve the technical problems is: a kind of device of measuring length in the portable electric appts that is arranged on is provided, described device comprises a round roller, described roller comprises the fan-shaped of even number equal portions, described fan-shaped be solid or hollow, solid fan-shaped and hollow fan-shaped being spaced; The both sides of described round roller are provided with infrared emission tube and infrared receiver tube respectively, and the opening and closing of infrared emission tube and infrared receiver tube are by the CPU control of portable electric appts.When not having receiving infrared-ray, the receiving tube circuit does not produce interruption; When receiving infrared ray, the receiving tube circuit produces and interrupts.
More specifically, above-described a kind of device of measuring length in the portable electric appts that is arranged on, described portable electric appts is a mobile phone.Described portable electric appts also can be PDA, MP3 or MP4 etc.
More specifically, above-described a kind of device of measuring length in the portable electric appts that is arranged on, the device of described measurement length is arranged on the side of mobile phone.
More specifically, above-described a kind of device of measuring length in the portable electric appts that is arranged on, the both sides of described round roller adopt ultrasonic emitting probe and ultrasound wave receiving transducer to substitute infrared emission tube and infrared receiver tube.
Implement a kind of device of measuring length in the portable electric appts that is arranged on of the present invention, have following beneficial effect:
Deft design of the present invention, cost is low, and is simple to operate, and the reliability height can make more convenient object is measured of people, has also enlarged the function of portable terminals such as mobile phone simultaneously.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is a kind of structural representation of measuring the device of length in the portable electric appts that is arranged on of the present invention;
Fig. 2 is that a kind of device that is arranged on measurement length in the portable electric appts of the present invention is installed in the structural representation in the mobile phone;
Fig. 3 is a kind of device embodiment infrared emission circuit theory diagrams of measuring length in the portable electric appts that are arranged on of the present invention;
Fig. 4 is a kind of infrared receiving circuit schematic diagram of measuring the device embodiment of length in the portable electric appts that is arranged on of the present invention;
Fig. 5 is a kind of CPU power supply and Interrupt Process circuit theory diagrams that are arranged on the device embodiment that measures length in the portable electric appts of the present invention;
Fig. 6 is a kind of instrumentation plan one of measuring the device embodiment of length in the portable electric appts that is arranged on of the present invention;
Fig. 7 is a kind of instrumentation plan two of measuring the device embodiment of length in the portable electric appts that is arranged on of the present invention.
Embodiment
As shown in Figure 1, in a kind of embodiment that is arranged in the portable electric appts device of measuring length of the present invention, described portable electric appts is a mobile phone.Described device comprises the round roller 10 that a radius is r, and described roller comprises the fan-shaped of the individual equal portions of 2a (a is a positive integer), and the center of circle angle value of the fan-shaped correspondence of every equal portions is W=360/2a, corresponding radian length L=2 π r/2a; The arc length of these equal portions is the basic scale value of linear measure longimetry.Described fan-shaped be solid or hollow, solid fan-shaped 11 and hollow fan-shaped 12 are spaced; Solid fan-shaped 11 can absorb infrared ray fully, stop ultrared passing through; Hollow fan-shaped 12, infrared ray is passed through.
Infrared transmitting tube and receiving tube are installed according to Fig. 1 mode, and power valve, receiving tube occupy roller 10 both sides and over against a certain equal portions position of round roller, and receiving tube is only at rotation roller, just can receive infrared ray when running into hollow equal portions; The opening and closing of infrared emission tube and infrared receiver tube are by the CPU control of portable electric appts.This infrared emission and receiving tube are the parts of sensor circuit, wherein the power valve circuit is launched infrared ray always after electronic equipment is opened measurement length function, the receiving tube circuit is in accepting state always, if this moment rotation roller, receiving tube will occur alternately receiving, do not receive ultrared situation regularly: when not having receiving infrared-ray, the receiving tube circuit does not produce interruption; When receiving infrared ray, the receiving tube circuit produces and interrupts.
Suppose that the solid black equal portions that infrared transmitting tube faces toward roller are that basic point begins rotation roller, last interrupts producing when stopping operating so, circuit system calculates from basic point and begins to have produced n interruption, and roller bearing from the course length X of basic point rotation is so: X=2n*L=2n*2 π r/2a=2n π r/a.
As shown in Figure 2, this device of measuring length is mounted to the zone of keeping to the side in mobile phone inside, exposes the part of round roller 10, slide when being convenient to measure; The infrared emission receiving tube that guarantees to install on the structure is in rotation process simultaneously, and only over against the sector region of equal portions, as the white equal portions zone 14 among Fig. 2, remainder is blocked by the structured material of mobile phone, as the black part of round roller among Fig. 2;
As Fig. 3; be the infrared emission circuit, infrared transmitting tube D1 model is SE304 here, and wherein R1 is current limliting protective resistance 220ohm; VCC=2.8V; be road power supply, when the user starts measurement length function, just open this power supply by CPU output; power valve begins to continue the emission infrared ray; when measurement finishes, the user presses powered-down behind the electronic product OK key, and power valve stops to launch infrared ray.
As Fig. 4, be infrared receiving circuit, the infrared receiving tube chip adopts HS0038B3V here, and operating voltage VCC scope is 2.7～5.5V, has 3 pins, is followed successively by VCC, OUT, GND; The OUT pin is interrupt pin INT herein, and this example receiving tube supply voltage VCC=3V is a road power supply by CPU output, when the user starts measurement length function, just opens this power supply, and receiving tube continues to be in the state of waiting for receiving infrared-ray.When receiving infrared ray, the INT pin will produce and interrupt output; When not having receiving infrared-ray, the output of receiving tube circuit is the 2.8V high level, does not promptly produce interruption.
As Fig. 5, be CPU power supply and Interrupt Process circuit, this example CPU employing MTK6239 platform, this circuit is responsible for infrared, transceiver circuit power supply, is responsible for the number of times of the interruption of calculating infrared receiving circuit generation simultaneously, and according to measuring principle calculating object length.
As Fig. 6; choose in the round roller a certain solid equal portions as the range finding starting point; draw straight line as initial zero mark 13 along this solid equal portions center line place diameter simultaneously; the user slides before the mobile phone and roller to be toggled it to this sign 13; screen display length this moment is 0.0cm; roller 10 slides along track to be measured, arrives when measuring final on trajectory, stops to slide.The mobile phone internal processes calculates interruption times, and screen shows running orbit length in real time.As shown in Figure 7, suppose that common property given birth to n=96 interruption, then the length of this desk is: X=2n π r/a=2*96*3.14*0.5/4=75.36 (cm) (π gets 3.14), screen just can demonstrate present length: 75.36 (cm).
For the measurement of spheroid volume, only need to measure girth along The midsagittal plane roller one circle, calculate the radius of a ball, just can calculate volume according to volume V=4 π r*r*r/3.
Adopt above-described measuring method, also can have certain error, source of error mainly comes from following two aspects:
1. there is error in the arc length of equal portions as the size of the basic scale value of linear measure longimetry;
2. when finishing when sliding, end rests on the moment that power valve does not receive interruption, and so just letting it pass less is less than or equal to the length of an equal portions arc length, promptly can produce an error that is less than or equal to basic scale value.
In order to reduce error, can adopt following method:
1. can normally produce under the prerequisite of interruption, make the roller circumference as far as possible little, equal portions are divided as much as possible, and so basic scale value is just more little, and error is just more little, and measuring accuracy is just high more.
2. also can adopt repeatedly to measure and average, to reduce error.
In sum, as those of ordinary skill is scrutable in the art, described in this instructions is a preferred embodiment of the present invention, and all changes of being made under this invention's idea or modification all should be in claim protection domains of the present invention.
Claims (4)
1. one kind is arranged on the device of measuring length in the portable electric appts, it is characterized in that described device comprises a round roller, described roller comprises the fan-shaped of even number equal portions, described fan-shaped be solid or hollow, solid fan-shaped and hollow fan-shaped being spaced; The both sides of described round roller are provided with infrared emission tube and infrared receiver tube respectively, and the opening and closing of infrared emission tube and infrared receiver tube are by the CPU control of portable electric appts.
2. a kind of device of measuring length in the portable electric appts that is arranged on according to claim 1 is characterized in that described portable electric appts is a mobile phone.
3. a kind of device of measuring length in the portable electric appts that is arranged on according to claim 2 is characterized in that the device of described measurement length is arranged on the side of mobile phone.
4. a kind of device of measuring length in the portable electric appts that is arranged on according to claim 1 is characterized in that the both sides of described round roller adopt ultrasonic emitting probe and ultrasound wave receiving transducer to substitute infrared emission tube and infrared receiver tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010292295 CN101982728A (en) | 2010-09-26 | 2010-09-26 | Length measuring device arranged in portable electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010292295 CN101982728A (en) | 2010-09-26 | 2010-09-26 | Length measuring device arranged in portable electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101982728A true CN101982728A (en) | 2011-03-02 |
Family
ID=43619630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010292295 Pending CN101982728A (en) | 2010-09-26 | 2010-09-26 | Length measuring device arranged in portable electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101982728A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017124203A1 (en) * | 2016-01-20 | 2017-07-27 | 苏炳算 | Mobile phone having meterstick measurement function |
| CN108444395A (en) * | 2018-05-16 | 2018-08-24 | 中国地质大学（武汉） | A kind of Portable measuring pen |
| CN111641742A (en) * | 2020-05-27 | 2020-09-08 | 捷开通讯(深圳)有限公司 | Mobile terminal and size measuring method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2053743U (en) * | 1989-06-22 | 1990-02-28 | 太原高技术实业总公司 | Digital display type curve lentgh counter |
| CN2248335Y (en) * | 1995-01-05 | 1997-02-26 | 韩志岭 | Electronic curve length measuring apparatus |
| CN2667456Y (en) * | 2003-12-23 | 2004-12-29 | 刘贤锴 | Length measuring instrument |
| CN1713657A (en) * | 2004-06-26 | 2005-12-28 | 乐金电子(中国)研究开发中心有限公司 | Mobile communication terminal with length measurement and its use |
| CN1786670A (en) * | 2004-12-09 | 2006-06-14 | 乐金电子(中国)研究开发中心有限公司 | Mobile communication terminal with length measurer |
-
2010
- 2010-09-26 CN CN 201010292295 patent/CN101982728A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2053743U (en) * | 1989-06-22 | 1990-02-28 | 太原高技术实业总公司 | Digital display type curve lentgh counter |
| CN2248335Y (en) * | 1995-01-05 | 1997-02-26 | 韩志岭 | Electronic curve length measuring apparatus |
| CN2667456Y (en) * | 2003-12-23 | 2004-12-29 | 刘贤锴 | Length measuring instrument |
| CN1713657A (en) * | 2004-06-26 | 2005-12-28 | 乐金电子(中国)研究开发中心有限公司 | Mobile communication terminal with length measurement and its use |
| CN1786670A (en) * | 2004-12-09 | 2006-06-14 | 乐金电子(中国)研究开发中心有限公司 | Mobile communication terminal with length measurer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017124203A1 (en) * | 2016-01-20 | 2017-07-27 | 苏炳算 | Mobile phone having meterstick measurement function |
| CN108444395A (en) * | 2018-05-16 | 2018-08-24 | 中国地质大学（武汉） | A kind of Portable measuring pen |
| CN111641742A (en) * | 2020-05-27 | 2020-09-08 | 捷开通讯(深圳)有限公司 | Mobile terminal and size measuring method |
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Open date: 20110302 |