CN1979088A - Hand-set using sound-wave to measure distance and measuring method therefor - Google Patents
Hand-set using sound-wave to measure distance and measuring method therefor Download PDFInfo
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- CN1979088A CN1979088A CN 200510126252 CN200510126252A CN1979088A CN 1979088 A CN1979088 A CN 1979088A CN 200510126252 CN200510126252 CN 200510126252 CN 200510126252 A CN200510126252 A CN 200510126252A CN 1979088 A CN1979088 A CN 1979088A
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Abstract
The invention discloses a cell phone device and distance measuring method by using sound wave to take distance measuring. The device includes measuring cell phone and the first loudspeaker, the first microphone, matched cell phone and the second loudspeaker, the second microphone, and the first distance measuring module on measuring hone, and the second distance measuring module on the matched cell phone. The first distance measuring module is used to read system time Ts1 when timing beginning, and reading system time Ts2 after first microphone receive the sound wave of second frequency and timing ending. According to T1, T2, and T3, distance between two points would be calculated. The second distance measuring module is used to open the sound wave of first frequency, and making the second loudspeaker to generate sound wave of second frequency after the second microphone receiving sound wave of first frequency. The invention could simply and accurately measure the distance between two points.
Description
Technical field
The present invention relates to the mobile communication terminal field, particularly relate to a kind of mobile device that sound wave finds range and method of range observation thereof utilized.
Background technology
At present, most distance-finding method is to adopt laser, electromagnetic wave (comprising infrared ray, bluetooth etc.) to find range.
The aerial velocity of propagation of electromagnetic wave and light wave is very fast, near 300,000 kilometers per seconds.Just because of this, very little error all can cause the error of 30000m such as the error of 0.1ms.In order to eliminate this error, the equipment that adopts electromagnetic wave and light wave to find range is all very complicated, expensive.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of mobile device and distance measurement method thereof that utilizes sound wave to carry out range observation, is used for simply accurately measuring the distance of point-to-point transmission.
To achieve these goals, the invention provides a kind of mobile device that utilizes sound wave to carry out range observation, comprise: the mobile phone and first loudspeaker thereof, first Mike initiatively find range, the passive matching with mobile phone and second loudspeaker thereof, second Mike, be arranged at first range finder module on the described mobile phone of initiatively finding range, be arranged at second range finder module on the described passive matching with mobile phone; Wherein
Described initiatively find range mobile phone and passive matching with mobile phone are positioned over needs locate at 2 of range finding;
Described first loudspeaker and second Mike are staggered relatively, and described first Mike and second loudspeaker are staggered relatively;
Described first range finder module, reading system time T s1 when being used for when range-viewfinder, beginning, and after described first loudspeaker send the sound wave of first frequency, open the sound wave that described first Mike monitors the second frequency that described second loudspeaker send, and after when described first Mike receives sound wave, the range-viewfinder of described second frequency, finishing, reading system time T s2, and according to the record T1, T2, T3 calculate described distance between two points D;
Described second range finder module is used to open the sound wave that described second Mike monitors described first frequency, and after described second Mike receives the sound wave of described first frequency, makes described second loudspeaker send the sound wave of described second frequency;
Wherein, described distance between two points D=340*T rice, T=(Ts2-Ts1-T1-T2-T3)/2;
Described T is described initiatively the range finding the required time of sound one way transmission between mobile phone and the passive matching with mobile phone; When beginning to range-viewfinder for from range-viewfinder the time, described Ts2-Ts1 finishes the required time; Described T1 begins required time of sound wave of producing described first frequency up to described first loudspeaker for from range-viewfinder the time; Described T2 is the required time of sound wave that sound wave to described second loudspeaker that described second Mike receives described first frequency send described second frequency; Described T3 is sound wave that described first Mike receives described second frequency required time when finishing during to range-viewfinder.
The described mobile device that utilizes sound wave to carry out range observation, wherein, for same mobile phone, the value of described T1, T2, T3 is fixed, and is preset in the internal memory of mobile phone.
The described mobile device that utilizes sound wave to carry out range observation wherein, to the described mobile phone of initiatively finding range, passive matching with mobile phone, is tried to achieve the value of T1+T2+T3 in the mode of precondition.
To achieve these goals, the present invention also provides a kind of method of utilizing sound wave to carry out range observation, is applicable to mobile communication terminal, comprising:
Initiatively find range mobile phone and first loudspeaker thereof, first Mike are set, the passive matching with mobile phone and second loudspeaker thereof, second Mike's step; And
On the described mobile phone of initiatively finding range, first range finder module is set, the step of second range finder module is set on described passive matching with mobile phone; Wherein
Described initiatively find range mobile phone and passive matching with mobile phone are positioned over needs locate at 2 of range finding;
Described first loudspeaker and second Mike are staggered relatively, and described first Mike and second loudspeaker are staggered relatively;
Reading system time T s1 when described first range finder module begins when range-viewfinder, and after described first loudspeaker send the sound wave of first frequency, open the sound wave that described first Mike monitors the second frequency that described second loudspeaker send, and after when described first Mike receives sound wave, the range-viewfinder of described second frequency, finishing, reading system time T s2, and according to the record T1, T2, T3 calculate described distance between two points D;
Described second range finder module is opened the sound wave that described second Mike monitors described first frequency, and after described second Mike receives the sound wave of described first frequency, makes described second loudspeaker send the sound wave of described second frequency;
Wherein, described distance between two points D=340*T rice, T=(Ts2-Ts1-T1-T2-T3)/2;
Described T is described initiatively the range finding the required time of sound one way transmission between mobile phone and the passive matching with mobile phone; When beginning to range-viewfinder for from range-viewfinder the time, described Ts2-Ts1 finishes the required time; Described T1 begins required time of sound wave of producing described first frequency up to described first loudspeaker for from range-viewfinder the time; Described T2 is the required time of sound wave that sound wave to described second loudspeaker that described second Mike receives described first frequency send described second frequency; Described T3 is sound wave that described first Mike receives described second frequency required time when finishing during to range-viewfinder.
The described method of utilizing sound wave to carry out range observation, wherein, described second Mike produces interruption after receiving the sound wave of described first frequency.
The described method of utilizing sound wave to carry out range observation, wherein, the standard that described interruption produces is the rising edge of the acoustic signals of first described first frequency.
The described method of utilizing sound wave to carry out range observation, wherein, described first Mike produces interruption after receiving the sound wave of described second frequency.
The described method of utilizing sound wave to carry out range observation, wherein, the standard that described interruption produces is the rising edge of the acoustic signals of first described second frequency.
The described method of utilizing sound wave to carry out range observation, wherein, the sound wave of described first frequency and the sound wave of described second frequency have identical or different frequency.
The described method of utilizing sound wave to carry out range observation, wherein, for same mobile phone, the value of described T1, T2, T3 is fixed, and is preset in the internal memory of mobile phone.
The described method of utilizing sound wave to carry out range observation wherein, to the described mobile phone of initiatively finding range, passive matching with mobile phone, is tried to achieve the value of T1+T2+T3 in the mode of precondition.
The present invention has only 340 metre per second (m/s)s according to the aerial velocity of propagation of sound wave, adopt circuit and software in the mobile phone, only need do the adjustment on the software, need not other additional firmware, just can guarantee very high measuring accuracy, the distance of the range finding that the present invention proposes can be in tens centimetres to tens meters scope.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Fig. 1 is a range measurement system synoptic diagram of the present invention;
Fig. 2 is a range finding schematic diagram calculation of the present invention; And
Fig. 3 is a range finding calculation flow chart of the present invention.
Embodiment
See also shown in Figure 1ly, be range measurement system synoptic diagram of the present invention.The present invention proposes the sound wave that utilizes the mobile phone transmission and receive certain frequency and carry out short-range range finding.In conjunction with shown in Figure 1, working mechanism of the present invention is as follows:
1) locates for 2 that, two mobile phones 100, mobile phone 200 are placed on the needs range finding respectively, wherein, the loudspeaker 101 of mobile phone 100 are oppositely arranged with the Mike 202 of mobile phone 200, the Mike 102 of mobile phone 100 is staggered relatively with the loudspeaker 201 of mobile phone 200, two mobile phones 100,200 are all entered distance measurement mode, i.e. operation is arranged at the required software code of range finding on the mobile phone 100,200;
2), mobile phone 100 produce frequencies be f1 sound wave pulse several, send by SPK (loudspeaker);
3), the Mike 202 of mobile phone 200 receives the sound wave pulse that frequency is f1, produce and interrupt (standard of interrupting producing is that the rising edge of first pulse signal is as the criterion), report to the CPU of mobile phone 200, mobile phone 200 produce frequencies be f2 sound wave pulse several, send by the loudspeaker 201 of mobile phone 200;
4), the Mike 102 of mobile phone 100 receives the sound wave pulse that frequency is f2, produces and interrupt (interrupting the standard that produces is as the criterion for the rising edge of first pulse signal), the CPU of report mobile phone 100 in the travel-time that mobile phone 100 calculates sound waves, calculates distance.
Wherein, frequency is that the sound wave pulse of f1 and sound wave pulse that frequency is f2 can have identical or different frequency, that is to say that the value of f1 and f2 is identical or different.
See also shown in Figure 2ly, be range finding schematic diagram calculation of the present invention.In Fig. 2:
T1 refer to from the CPU of mobile phone 1 order to begin to measure begin from the loudspeaker of mobile phone 1, to produce to the sound of reality till during this period of time, the required processing delay of transmission sound of mobile phone 1 just;
T refers to the required time of sound one way transmission;
T2 refers to and receives frequency from mobile phone 2 is that the sound of f1 sends the required time of sound that frequency is f2, the just processing delay of mobile phone 2 to its loudspeaker;
T3 refers to from mobile phone 1 and receives acoustic impluse signal required time when its CPU finishes meter; The reception acoustic processing time delay of mobile phone 1 just.
So:
T＝(Ttotal-T1-T2-T3)/2
Distance between two points D=340*T (rice)
It is to be noted:
At first, the value of T1, T2, T3 is different for different mobile phones, but for same mobile phone, value is fixed, so can be preset in the internal memory of mobile phone.
Secondly, for two mobile phones, also can try to achieve the value of T1+T2+T3 by prior training, such as, with the length of a standard of this two mobile phone for measuring, select the length of the ruler of 20cm herein, according to this measurement of length, can calculate the value of T1+T2+T3, because T1, T2, T3 value are fixed same mobile phone, the value of T1+T2+T3 is also fixed so, uses thereby this value can be waited until when measuring next time.
Fig. 3 is a range finding calculation flow chart of the present invention.
Flow process when mobile phone 1 is initiatively found range comprises:
Step 311, beginning starts the range finding software that is arranged on the mobile phone 1;
Step 312 judges that mobile phone 1 is that active is found range or passive matching with mobile phone 2 is found range, if mobile phone 1 is initiatively to find range, then step is proceeded;
Step 313, the loudspeaker of mobile phone 1 (SPK) sounding, the reading system time, and pick up counting;
Step 314, opening Mike (Mic) monitoring frequency is the sound wave of f2;
Step 315 judges whether to receive that frequency is the sound wave (interrupt mode) of f2, if receive that then step is proceeded, if do not receive, then returns step 314;
Step 316, the reading system time, finish timing, and computed range;
Step 317 shows calculated distance; And
Step 318 quits a program, and finishes range finding.
Flow process when mobile phone 2 is found range movingly comprises:
Step 321, beginning starts the range finding software that is arranged on the mobile phone 2;
Step 322 judges that mobile phone 2 is that active is found range or passive matching with mobile phone 1 is found range, if mobile phone 2 is found range movingly, then step is proceeded;
Step 323, opening Mike (Mic) monitoring frequency is the sound wave of f1;
Step 324 judges whether to receive that frequency is the sound wave (interrupt mode) of f1, if receive that then step is proceeded, if do not receive, then returns step 323;
Step 325, the loudspeaker of mobile phone 2 (SPK) sends the sound wave that frequency is f2; And
Step 326 quits a program, and finishes range finding.
Among the present invention, need not add any hardware device in mobile phone, all functions can realize with the basic hardware configuration of existing mobile phone, just need to add corresponding software range finder module and get final product.
No matter in addition, only need a software range finder module to move in mobile phone, be that mobile phone is initiatively found range (function that is mobile phone 1), still by another one mobile phone movingly find range (function that is mobile phone 2).
Technical characterstic of the present invention is:
The method of the invention adopts different frequency of sound wave can avoid the interference of echo;
The frequency of operation of mobile phone CPU is 50-100MHz now, so the precision of various processing delay can reach 20ns, is no more than 1us at most, and distance measuring precision can reach 0.34mm so;
In measuring process, though have wave reflection, because point-to-point transmission air line distance is the shortest, so the sound wave pulse that takes the air line arrives mobile phone Mike at first, so reflection wave can not form interference for measuring.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (11)
1, a kind of mobile device that utilizes sound wave to carry out range observation, it is characterized in that, comprise: the mobile phone and first loudspeaker thereof, first Mike initiatively find range, the passive matching with mobile phone and second loudspeaker thereof, second Mike, be arranged at first range finder module on the described mobile phone of initiatively finding range, be arranged at second range finder module on the described passive matching with mobile phone; Wherein
Described initiatively find range mobile phone and passive matching with mobile phone are positioned over needs locate at 2 of range finding;
Described first loudspeaker and second Mike are staggered relatively, and described first Mike and second loudspeaker are staggered relatively;
Described first range finder module, reading system time T s1 when being used for when range-viewfinder, beginning, and after described first loudspeaker send the sound wave of first frequency, open the sound wave that described first Mike monitors the second frequency that described second loudspeaker send, and after when described first Mike receives sound wave, the range-viewfinder of described second frequency, finishing, reading system time T s2, and according to the record T1, T2, T3 calculate described distance between two points D;
Described second range finder module is used to open the sound wave that described second Mike monitors described first frequency, and after described second Mike receives the sound wave of described first frequency, makes described second loudspeaker send the sound wave of described second frequency;
Wherein, described distance between two points D=340*T rice, T=(Ts2-Ts1-T1-T2-T3)/2;
Described T is described initiatively the range finding the required time of sound one way transmission between mobile phone and the passive matching with mobile phone; When beginning to range-viewfinder for from range-viewfinder the time, described Ts2-Ts1 finishes the required time; Described T1 begins required time of sound wave of producing described first frequency up to described first loudspeaker for from range-viewfinder the time; Described T2 is the required time of sound wave that sound wave to described second loudspeaker that described second Mike receives described first frequency send described second frequency; Described T3 is sound wave that described first Mike receives described second frequency required time when finishing during to range-viewfinder.
2, the mobile device that utilizes sound wave to carry out range observation according to claim 1 is characterized in that, for same mobile phone, the value of described T1, T2, T3 is fixed, and is preset in the internal memory of mobile phone.
3, the mobile device that utilizes sound wave to carry out range observation according to claim 1 and 2 is characterized in that, to the described mobile phone of initiatively finding range, passive matching with mobile phone, tries to achieve the value of T1+T2+T3 in the mode of precondition.
4, a kind of method of utilizing sound wave to carry out range observation is applicable to mobile communication terminal, it is characterized in that, comprising:
Initiatively find range mobile phone and first loudspeaker thereof, first Mike are set, the passive matching with mobile phone and second loudspeaker thereof, second Mike's step; And
On the described mobile phone of initiatively finding range, first range finder module is set, the step of second range finder module is set on described passive matching with mobile phone; Wherein
Described initiatively find range mobile phone and passive matching with mobile phone are positioned over needs locate at 2 of range finding;
Described first loudspeaker and second Mike are staggered relatively, and described first Mike and second loudspeaker are staggered relatively;
Reading system time T s1 when described first range finder module begins when range-viewfinder, and after described first loudspeaker send the sound wave of first frequency, open the sound wave that described first Mike monitors the second frequency that described second loudspeaker send, and after when described first Mike receives sound wave, the range-viewfinder of described second frequency, finishing, reading system time T s2, and according to the record T1, T2, T3 calculate described distance between two points D;
Described second range finder module is opened the sound wave that described second Mike monitors described first frequency, and after described second Mike receives the sound wave of described first frequency, makes described second loudspeaker send the sound wave of described second frequency;
Wherein, described distance between two points D=340*T rice, T=(Ts2-Ts1-T1-T2-T3)/2;
Described T is described initiatively the range finding the required time of sound one way transmission between mobile phone and the passive matching with mobile phone; When beginning to range-viewfinder for from range-viewfinder the time, described Ts2-Ts1 finishes the required time; Described T1 begins required time of sound wave of producing described first frequency up to described first loudspeaker for from range-viewfinder the time; Described T2 is the required time of sound wave that sound wave to described second loudspeaker that described second Mike receives described first frequency send described second frequency; Described T3 is sound wave that described first Mike receives described second frequency required time when finishing during to range-viewfinder.
5, the method for utilizing sound wave to carry out range observation according to claim 4 is characterized in that, described second Mike produces interruption after receiving the sound wave of described first frequency.
6, the method for utilizing sound wave to carry out range observation according to claim 5 is characterized in that, the standard that described interruption produces is the rising edge of the acoustic signals of first described first frequency.
7, the method for utilizing sound wave to carry out range observation according to claim 4 is characterized in that, described first Mike produces interruption after receiving the sound wave of described second frequency.
8, the method for utilizing sound wave to carry out range observation according to claim 7 is characterized in that, the standard that described interruption produces is the rising edge of the acoustic signals of first described second frequency.
9, according to claim 4,5,6, the 7 or 8 described methods of utilizing sound wave to carry out range observation, it is characterized in that the sound wave of described first frequency and the sound wave of described second frequency have identical or different frequency.
10, according to claim 4,5,6, the 7 or 8 described methods of utilizing sound wave to carry out range observation, it is characterized in that for same mobile phone, the value of described T1, T2, T3 is fixed, and is preset in the internal memory of mobile phone.
11, according to claim 4,5,6, the 7 or 8 described methods of utilizing sound wave to carry out range observation, it is characterized in that,, try to achieve the value of T1+T2+T3 in the mode of precondition the described mobile phone of initiatively finding range, passive matching with mobile phone.
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| CNB200510126252XA CN100429479C (en) | 2005-12-01 | 2005-12-01 | Hand-set using sound-wave to measure distance and measuring method therefor |
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| CNB200510126252XA CN100429479C (en) | 2005-12-01 | 2005-12-01 | Hand-set using sound-wave to measure distance and measuring method therefor |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101799544A (en) * | 2010-03-26 | 2010-08-11 | 北京物资学院 | Space locating method and system based on sound waves |
| CN102075624A (en) * | 2010-12-29 | 2011-05-25 | 上海华勤通讯技术有限公司 | Mobile terminal for measuring vertical height and method for measuring vertical height |
| CN104113380A (en) * | 2013-04-17 | 2014-10-22 | 国民技术股份有限公司 | Communication method and communication system based on audio transmitting and receiving terminal |
| CN104155644A (en) * | 2014-08-20 | 2014-11-19 | 西安电子科技大学 | Ranging method based on sound sensor and system thereof |
| CN105403880A (en) * | 2014-08-29 | 2016-03-16 | 展讯通信（上海）有限公司 | System and method for measuring distance |
| CN113271544A (en) * | 2021-05-19 | 2021-08-17 | 深圳乐播科技有限公司 | Vehicle-mounted screen projection method, device, equipment and storage medium |
| WO2022110385A1 (en) * | 2020-11-24 | 2022-06-02 | 苏州触达信息技术有限公司 | Ranging method, apparatus, system, smart device, and computer-readable storage medium |
| CN115695633A (en) * | 2021-07-23 | 2023-02-03 | 上海哔哩哔哩科技有限公司 | Multi-terminal cooperative operation method and device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5828554B2 (en) * | 1978-11-22 | 1983-06-16 | 松下電器産業株式会社 | ultrasonic distance meter |
| JP3305608B2 (en) * | 1997-02-20 | 2002-07-24 | 松下電器産業株式会社 | Mobile communication device with distance measurement function |
| CN1499219A (en) * | 2002-11-05 | 2004-05-26 | 朱景军 | 'Handest-probe' type Distance warner |
| CN1424590A (en) * | 2002-12-25 | 2003-06-18 | 杨炳南 | Method for identifying object signal in wireless ranging |
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2005
- 2005-12-01 CN CNB200510126252XA patent/CN100429479C/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101799544A (en) * | 2010-03-26 | 2010-08-11 | 北京物资学院 | Space locating method and system based on sound waves |
| CN102075624A (en) * | 2010-12-29 | 2011-05-25 | 上海华勤通讯技术有限公司 | Mobile terminal for measuring vertical height and method for measuring vertical height |
| CN104113380A (en) * | 2013-04-17 | 2014-10-22 | 国民技术股份有限公司 | Communication method and communication system based on audio transmitting and receiving terminal |
| CN104113380B (en) * | 2013-04-17 | 2018-03-09 | 国民技术股份有限公司 | The means of communication and communication system of terminal are sent and received based on audio |
| CN104155644A (en) * | 2014-08-20 | 2014-11-19 | 西安电子科技大学 | Ranging method based on sound sensor and system thereof |
| CN105403880A (en) * | 2014-08-29 | 2016-03-16 | 展讯通信（上海）有限公司 | System and method for measuring distance |
| WO2022110385A1 (en) * | 2020-11-24 | 2022-06-02 | 苏州触达信息技术有限公司 | Ranging method, apparatus, system, smart device, and computer-readable storage medium |
| CN113271544A (en) * | 2021-05-19 | 2021-08-17 | 深圳乐播科技有限公司 | Vehicle-mounted screen projection method, device, equipment and storage medium |
| CN115695633A (en) * | 2021-07-23 | 2023-02-03 | 上海哔哩哔哩科技有限公司 | Multi-terminal cooperative operation method and device |
| CN115695633B (en) * | 2021-07-23 | 2024-04-23 | 上海哔哩哔哩科技有限公司 | Multi-terminal cooperative operation method and device |
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