CN104614721A - Measurement method for distance between objects - Google Patents
Measurement method for distance between objects Download PDFInfo
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- CN104614721A CN104614721A CN201510084243.2A CN201510084243A CN104614721A CN 104614721 A CN104614721 A CN 104614721A CN 201510084243 A CN201510084243 A CN 201510084243A CN 104614721 A CN104614721 A CN 104614721A
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- distance
- ultrasonic
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- signal
- ultrasonic signal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
- G01S11/14—Systems for determining distance or velocity not using reflection or reradiation using ultrasonic, sonic, or infrasonic waves
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The invention discloses a measurement method for a distance between objects. The measurement method is characterized by comprising the following steps: a wireless electric wave signal communication circuit and an ultrasonic wave receiving-transmitting circuit are mounted on an object A and an object B, which need to be subjected to distance measurement; after time T2, ultrasonic wave signals are transmitted to the object B from the object A or to the object A from the object B; at the time T3, the object B or the object A receives the ultrasonic wave signals transmitted to the object B from the object A or the ultrasonic wave signals transmitted to the object A from the object B; the distance S between the object A and the object B is calculated by multiplying a time difference (T3-T2) by a ultrasonic wave transmission speed V. The measurement method for the distance between the objects has high measurement precision, reliable performance and small volume, is convenient to use and has a low price.
Description
Technical field
The present invention relates to field of measuring technique, relate in particular to a kind of measuring method of object spacing.
Background technology
Needing the short-range occasion between measurement two objects, as in market, library, valuables or stolen are lost in the first-class public place of automobile, and more seriously child goes astray from the group, and occur to prevent such thing, need to find one just to give the alarm when leaving oneself health certain distance when valuable thing, and keep duty, low-power consumption, small and exquisite anti-losing device always.Main frame and the random volume of anti-losing device are little, and such as mobile phone can be used as main frame, and random can be the slight electronic product of volume, and is placed in the valuables such as wallet.Measure the distance between mobile phone and wallet, existing laser ranging, radar range finding, the technology such as ultrasonic ranging are all inapplicable.What adopt so usual is the distance roughly measuring both according to radio wave signal intensity, and the precision that this method is measured is low, and poor reliability, result of use does not reach the accreditation of user, thus could not commercially widespread use.
Summary of the invention
The object of the invention is to overcome above-mentioned shortcoming and a kind of measuring accuracy provided is high, dependable performance, volume is little, easy to use, the measuring method of low-cost object spacing.
The measuring method of a kind of object spacing of the present invention, comprise: needing two of measuring distance object A and B are provided with radio wave signal telecommunication circuit and ultrasonic transceiver circuit, by object A through radio wave signal at time T1 time notice object B T2 time delay after will send ultrasonic signal to object B or object B to object A by object A, when time T3, object B or object A receives the ultrasonic signal that the ultrasonic signal that sent to object B by object A or object B send to object A, then ultrasonic transmission speed V is taken advantage of to calculate distance S between object A and object B by mistiming T3-T2.
The measuring method of a kind of object spacing of the present invention, comprise: needing two of measuring distance object A and B are provided with radio wave signal telecommunication circuit and ultrasonic transceiver circuit, clock synchronous is carried out through radio signal communications, ultrasonic signal is sent to object B or object B to object A by object A at T2 lock in time of setting, when time T3, object B or object A receives the ultrasonic signal that the ultrasonic signal that sent to object B by object A or object B send to object A, then ultrasonic transmission speed V is taken advantage of to calculate distance S between object A and object B by mistiming T3-T2.
The measuring method of a kind of object spacing of the present invention, comprise: needing two of measuring distance object A and B are provided with radio wave signal telecommunication circuit and ultrasonic transceiver circuit, clock synchronous is carried out through radio signal and external third-parties clock signal, ultrasonic signal is sent to object B or object B to object A by object A at T2 lock in time of setting, when time T3, object B or object A receives the ultrasonic signal that the ultrasonic signal that sent to object B by object A or object B send to object A, then ultrasonic transmission speed V is taken advantage of to calculate distance S between object A and object B by mistiming T3-T2.
The measuring method of above-mentioned a kind of object spacing, can measure the distance between certain object and other object in multiple object.
The present invention compared with prior art, there is obvious beneficial effect, as can be known from the above technical solutions: the present invention mainly utilizes velocity of radio wave much larger than sound velocity of wave propagation, in short-range situation, the radio wave propagation sent from object A is very short to time T used during object B, thus the timing time error caused by timing time carrying out synchronous object A and object B with radio wave signal is much smaller than the travel-time (T2-T3) of ultrasound wave between object A and object B, thus it is negligible, direct S=V (T3-T2) calculates the distance between object A and object B.Simultaneously, utilize the fast development of modern electronic technology, large scale integrated circuit technology will be adopted, function i ntegration as much as possible on a large scale integrated circuit, form a complete multichip system product solution, thus the price of product is fallen, is convenient to the technology of the present invention and is applied in a large amount of products application and goes.Measuring accuracy of the present invention improves greatly, its dependable performance, and volume is little, easy to use, low price, is applicable to large-scale promotion and uses.
Embodiment
embodiment 1:
A kind of measuring method of object spacing, comprise: needing two of measuring distance object A and B are provided with radio wave signal telecommunication circuit and ultrasonic transceiver circuit, by object A through radio wave signal at time T1 time notice object B T2 time delay after will send ultrasonic signal to object B or object B to object A by object A, when time T3, object B or object A receives the ultrasonic signal that the ultrasonic signal that sent to object B by object A or object B send to object A, then ultrasonic transmission speed V is taken advantage of to calculate distance S between object A and object B by mistiming T3-T2.
This method can measure the distance in multiple object between certain object and other object.Be particularly suited for the measurement between short distance object.
embodiment 2:
A kind of measuring method of object spacing, comprise: needing two of measuring distance object A and B are provided with radio wave signal telecommunication circuit and ultrasonic transceiver circuit, clock synchronous is carried out through radio signal communications, ultrasonic signal is sent to object B or object B to object A by object A at T2 lock in time of setting, when time T3, object B or object A receives the ultrasonic signal that the ultrasonic signal that sent to object B by object A or object B send to object A, then ultrasonic transmission speed V is taken advantage of to calculate distance S between object A and object B by mistiming T3-T2.
This method can measure the distance in multiple object between certain object and other object.Be particularly suited for the measurement between short distance object.
embodiment 3:
A kind of measuring method of object spacing, comprise: by needing two of measuring distance object A and B are provided with radio wave signal telecommunication circuit and ultrasonic transceiver circuit, clock synchronous is carried out through radio signal and external third-parties clock signal, ultrasonic signal is sent to object B or object B to object A by object A at T2 lock in time of setting, when time T3, object B or object A receives the ultrasonic signal that the ultrasonic signal that sent to object B by object A or object B send to object A, then ultrasonic transmission speed V is taken advantage of to calculate distance S between object A and object B by mistiming T3-T2.
This method can measure the distance in multiple object between certain object and other object.Be particularly suited for the measurement between short distance object.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, anyly do not depart from technical solution of the present invention content, the any simple modification done above embodiment according to technical spirit of the present invention, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (4)
1. the measuring method of an object spacing, it is characterized in that: needing two of measuring distance object A and B are provided with radio wave signal telecommunication circuit and ultrasonic transceiver circuit, by object A through radio wave signal at time T1 time notice object B T2 time delay after will send ultrasonic signal to object B or object B to object A by object A, when time T3, object B or object A receives the ultrasonic signal that the ultrasonic signal that sent to object B by object A or object B send to object A, then ultrasonic transmission speed V is taken advantage of to calculate distance S between object A and object B by mistiming T3-T2.
2. the measuring method of an object spacing, it is characterized in that: needing two of measuring distance object A and B are provided with radio wave signal telecommunication circuit and ultrasonic transceiver circuit, clock synchronous is carried out through radio signal communications, ultrasonic signal is sent to object B or object B to object A by object A at T2 lock in time of setting, when time T3, object B or object A receives the ultrasonic signal that the ultrasonic signal that sent to object B by object A or object B send to object A, then ultrasonic transmission speed V is taken advantage of to calculate distance S between object A and object B by mistiming T3-T2.
3. the measuring method of an object spacing, it is characterized in that: needing two of measuring distance object A and B are provided with radio wave signal telecommunication circuit and ultrasonic transceiver circuit, clock synchronous is carried out through radio signal and external third-parties clock signal, ultrasonic signal is sent to object B or object B to object A by object A at T2 lock in time of setting, when time T3, object B or object A receives the ultrasonic signal that the ultrasonic signal that sent to object B by object A or object B send to object A, then ultrasonic transmission speed V is taken advantage of to calculate distance S between object A and object B by mistiming T3-T2.
4. the measuring method of a kind of object spacing one of as described in claim 1-3, is characterized in that: can measure the distance between certain object and other object in multiple object.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510084243.2A CN104614721A (en) | 2015-02-16 | 2015-02-16 | Measurement method for distance between objects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510084243.2A CN104614721A (en) | 2015-02-16 | 2015-02-16 | Measurement method for distance between objects |
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| CN104614721A true CN104614721A (en) | 2015-05-13 |
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| CN201510084243.2A Pending CN104614721A (en) | 2015-02-16 | 2015-02-16 | Measurement method for distance between objects |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105300654A (en) * | 2015-11-13 | 2016-02-03 | 中国空气动力研究与发展中心低速空气动力研究所 | Ultrasonic precise range finding system in low speed wind tunnel |
| CN107807360A (en) * | 2017-09-30 | 2018-03-16 | 英华达（上海）科技有限公司 | Electronic installation and its distance detection method with distance detection function |
| CN110749888A (en) * | 2019-12-20 | 2020-02-04 | 广州赛特智能科技有限公司 | Distance measurement method based on ultrasonic distance measurement system |
| CN111722181A (en) * | 2020-06-29 | 2020-09-29 | 李晓科 | Method for indoor positioning and speed measurement by using speed difference of radio wave and sound wave |
-
2015
- 2015-02-16 CN CN201510084243.2A patent/CN104614721A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105300654A (en) * | 2015-11-13 | 2016-02-03 | 中国空气动力研究与发展中心低速空气动力研究所 | Ultrasonic precise range finding system in low speed wind tunnel |
| CN107807360A (en) * | 2017-09-30 | 2018-03-16 | 英华达（上海）科技有限公司 | Electronic installation and its distance detection method with distance detection function |
| US20190101612A1 (en) * | 2017-09-30 | 2019-04-04 | Inventec Appliances Corp. | Electronic device with distance detection function and distance detection method thereof |
| CN110749888A (en) * | 2019-12-20 | 2020-02-04 | 广州赛特智能科技有限公司 | Distance measurement method based on ultrasonic distance measurement system |
| CN111722181A (en) * | 2020-06-29 | 2020-09-29 | 李晓科 | Method for indoor positioning and speed measurement by using speed difference of radio wave and sound wave |
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Application publication date: 20150513 |