A system and method for measuring distance
A technology for measuring distance and distance, which is applied in the field of measurement, can solve problems such as low precision, limitations, and poor directivity of speakers and microphones, and achieve the effects of high precision, convenient operation, and large measurement range
Active Publication Date: 2018-12-21
SPREADTRUM COMM (SHANGHAI) CO LTD
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Problems solved by technology
The principle is: the mobile terminal outputs sound through the speaker, and uses the microphone to receive the echo for distance measurement, but this function can only be used for relatively short-distance measurement, and the accuracy is low
Although this mobile terminal echo ranging system is low in cost, because the main function of the sound system of the mobile terminal is used for talking, it does not further optimize the design structure for ranging. As a result, the measurable range of the echo ranging is very short and limited; the directivity of the speaker and the microphone is very poor, and a basically reliable measurement result can only be obtained when the side end is a very wide wall
Therefore, the existing mobile terminals cannot achieve the purpose of accurate ranging
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[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0029] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.
[0031] Such as figure 1 As shown, a system for measuring distance is used to measure the distance between a fir...
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The invention discloses a system and method for measuring distance. The method for measuring distance is as follows: S1. The signal source transmits the audio pulse at the first position; S2. At time t0b, the signal receiver is at The first position receives the audio pulse; at S3.tnb time, the signal receiver receives the audio pulse at the second position; S4. According to the time difference between the tnb time and the t0b time, to obtain the distance between the first location and the second location. The invention can realize the distance measurement between two points through two mobile terminals without using other additional tools, and has convenient operation, high precision and large measurement range.
Description
technical field [0001] The invention relates to measurement technology, in particular to a system and method for measuring distance through audio pulses. Background technique [0002] The technical means of distance measurement can be applied to industrial sites, construction sites, home decoration and battlefield measurement. The existing equipment for measuring distance mainly includes: tape measure, laser range finder, ultrasonic range finder and sonar range finder. Among them, the tape measure is a common ranging tool in daily life. However, due to the limited length of the tape measure, it is impossible to quickly and accurately obtain the measurement results for long-distance measurements. The measurement accuracy is low and it is inconvenient to use; laser distance measurement The instrument is a professional ranging tool, which is widely used in topographic measurement, battlefield measurement, and tanks, aircraft, ships and artillery to measure the distance of the ...
Claims
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IPC IPC(8): G01S11/14
Inventor 刘智勇姜山曹强
Owner SPREADTRUM COMM (SHANGHAI) CO LTD