CN210181219U - Distance measuring device based on mechanical waves - Google Patents
Distance measuring device based on mechanical waves Download PDFInfo
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- CN210181219U CN210181219U CN201920902168.XU CN201920902168U CN210181219U CN 210181219 U CN210181219 U CN 210181219U CN 201920902168 U CN201920902168 U CN 201920902168U CN 210181219 U CN210181219 U CN 210181219U
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Abstract
The utility model relates to the technical field of distance measurement, and discloses a distance measuring device based on mechanical waves, which comprises a main distance measuring component and at least one auxiliary distance measuring component, wherein the main distance measuring component comprises a main sound wave identification processing module, a main transmitting module and a main receiving module which are respectively and electrically connected with the main sound wave identification processing module, the auxiliary distance measuring component comprises an auxiliary sound wave identification processing module, an auxiliary transmitting module and an auxiliary receiving module which are respectively and electrically connected with the auxiliary sound wave identification processing module, through the technical scheme, the auxiliary ranging component identifies and receives the first ranging mechanical wave sent by the main ranging component, and then sends the second ranging mechanical wave which can be identified and received by the main ranging component, the distance between the main ranging assembly and the auxiliary ranging assembly can be obtained through calculation of the main acoustic wave identification processing module according to the time difference, and the ultrasonic waves have certain penetrating power, so that the ultrasonic waves can pass through obstacles to measure the distance.
Description
Technical Field
The utility model relates to a range finding technical field, more specifically say, it relates to a range unit based on mechanical ripples.
Background
The propagation of mechanical vibration in a medium is called mechanical wave, the mechanical wave is similar to or different from electromagnetic wave, the mechanical wave is generated by mechanical vibration, and the electromagnetic wave is generated by electromagnetic oscillation; mechanical wave propagation requires a specific medium, propagation speeds in different media are different, and the mechanical wave cannot propagate at all in vacuum but the electromagnetic wave can.
Common mechanical waves are: water wave, sound wave, seismic wave, ultrasonic wave. Ultrasonic waves are sound waves which are inaudible to the human ear and have a frequency higher than 20KHZ, and have the characteristics of strong directivity, slow energy consumption and long propagation distance in a medium, so that the ultrasonic waves are often used for distance measurement.
The existing ultrasonic distance measuring device generally comprises an ultrasonic transmitter, an ultrasonic receiver and a processor, wherein ultrasonic waves emitted by the ultrasonic transmitter return after reaching a distance measuring place and are received by the ultrasonic receiver, the processor calculates the difference between the time when the ultrasonic receiver receives ultrasonic signals and the time when the ultrasonic transmitter sends the ultrasonic signals, and the difference is multiplied by the propagation speed of the ultrasonic signals and then divided by 2 to obtain the distance between the ultrasonic transmitter and the ultrasonic receiver.
However, the distance measuring method has disadvantages in that when the ultrasonic wave encounters an obstacle, part of the energy of the ultrasonic wave is reflected back, and the ultrasonic distance measuring device cannot pass through the obstacle to measure the distance, and is easily interfered by other noises to affect the measuring accuracy.
SUMMERY OF THE UTILITY MODEL
To the above problem, an object of the utility model is to provide a range unit based on mechanical wave, it has can pass through the obstacle I carry out distance measurement's advantage.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
a distance measuring device based on mechanical waves comprises a main distance measuring component and at least one auxiliary distance measuring component;
the main distance measuring assembly comprises a main sound wave identification processing module, a main transmitting module and a main receiving module which are respectively and electrically connected with the main sound wave identification processing module;
the auxiliary ranging assembly comprises an auxiliary sound wave identification processing module, an auxiliary transmitting module and an auxiliary receiving module which are respectively and electrically connected with the auxiliary sound wave identification processing module;
the main transmitting module is used for transmitting first ranging mechanical waves for the auxiliary receiving module to receive outwards, and the auxiliary sound wave identification processing module identifies and processes second ranging mechanical waves for the main receiving module to receive through the auxiliary transmitting module after the first ranging mechanical waves are processed;
and the main sound wave identification processing module acquires the distance between the main ranging assembly and the auxiliary ranging assembly according to the time difference between the first ranging mechanical wave sent out by the main transmitting module and the second ranging mechanical wave received by the main receiving module.
Through the technical scheme, the auxiliary ranging assembly identifies and receives the first ranging mechanical wave sent by the main ranging assembly, then sends the second ranging mechanical wave which can be identified and received by the main ranging assembly, the distance between the main ranging assembly and the auxiliary ranging assembly can be obtained through the main sound wave identification processing module according to the time difference, and the ultrasonic wave has certain penetrating power and can pass through obstacles to measure the distance.
The utility model discloses further set up to: the main acoustic wave identification processing module comprises a main processing unit, a main amplitude-frequency driving unit, a calculating unit and a display unit;
the auxiliary sound wave identification processing module comprises an auxiliary processing unit and an auxiliary amplitude-frequency driving unit;
the main receiving module comprises a main amplitude-frequency acquisition unit and a main frequency selection unit;
the auxiliary receiving module comprises an auxiliary amplitude-frequency acquisition unit and an auxiliary frequency selection unit;
the main processing unit is respectively and electrically connected with the main amplitude-frequency driving unit, the calculating unit, the display unit and the main frequency selecting unit, and the main frequency selecting unit is electrically connected with the main amplitude-frequency acquiring unit;
the auxiliary processing unit is respectively electrically connected with the auxiliary amplitude-frequency driving unit and the auxiliary frequency selecting unit, and the auxiliary frequency selecting unit is electrically connected with the auxiliary amplitude-frequency acquiring unit;
the auxiliary frequency selection unit controls the auxiliary amplitude-frequency acquisition unit to receive the first distance measurement mechanical wave, and the auxiliary processing unit drives the auxiliary transmitting module to transmit the second distance measurement mechanical wave through the auxiliary amplitude-frequency driving unit;
the main frequency selection unit controls the main amplitude-frequency acquisition unit to receive the second distance measurement mechanical wave;
the calculating unit calculates the time difference, calculates the distance between the main ranging assembly and the auxiliary ranging assembly according to the time difference and preset sound wave speed information, and the display unit displays the distance.
The utility model discloses further set up to: the main frequency selection unit and the auxiliary frequency selection unit are crystal oscillator frequency selection modules.
Through the technical scheme, the mechanical waves are screened through the crystal oscillator frequency selection module, so that the first distance measurement mechanical waves and the second distance measurement mechanical waves are identified.
The utility model discloses further set up to: the main transmitting module and the main receiving module are arranged at intervals, and the auxiliary transmitting module and the auxiliary receiving module are arranged at intervals.
The utility model discloses further set up to: one side of the main transmitting module, which is close to the main receiving module, is provided with a main sound insulation board, and one side of the auxiliary transmitting module, which is close to the auxiliary receiving module, is provided with an auxiliary sound insulation board.
By the technical scheme, the interference between the transmitting module and the receiving module is reduced.
Compared with the prior art, the beneficial effects of the utility model are that:
the auxiliary ranging assembly is used for identifying and receiving a first ranging mechanical wave sent by the main ranging assembly, then a second ranging mechanical wave which can be identified and received by the main ranging assembly is sent, the distance between the main ranging assembly and the auxiliary ranging assembly can be obtained through the main sound wave identification processing module according to time difference calculation, and the ultrasonic wave has certain penetrating power, so that the ultrasonic wave can pass through obstacles to measure the distance.
Drawings
Fig. 1 is a schematic diagram of an embodiment of the present invention;
fig. 2 is a module connection diagram according to an embodiment of the present invention.
Reference numerals: 1. a primary ranging assembly; 11. a main sound wave identification processing module; 111. a main processing unit; 112. a main amplitude-frequency driving unit; 115. a calculation unit; 116. a display unit; 12. a main transmitting module; 13. a main receiving module; 131. a main amplitude-frequency acquisition unit; 132. a main frequency selection unit; 14. a main acoustic panel; 2. a secondary ranging assembly; 21. a secondary sound wave identification processing module; 211. a sub-processing unit; 212. an auxiliary amplitude-frequency driving unit; 22. a secondary receiving module; 221. a secondary amplitude-frequency acquisition unit; 222. a sub-frequency selection unit; 23. a secondary transmission module; 24. and a secondary baffle.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
A distance measuring device based on mechanical waves is shown in figure 1 and comprises a main distance measuring component 1 and at least one auxiliary distance measuring component 2, in the embodiment, one auxiliary distance measuring component 2. The main ranging assembly 1 comprises a main sound wave identification processing module 11, a main transmitting module 12 and a main receiving module 13 which are respectively and electrically connected with the main sound wave identification processing module 11, and the auxiliary ranging assembly 2 comprises an auxiliary sound wave identification processing module 21, an auxiliary transmitting module 23 and an auxiliary receiving module 22 which are respectively and electrically connected with the auxiliary sound wave identification processing module 21.
When the distance between two positions needs to be measured, the main distance measuring assembly 1 and the auxiliary distance measuring assembly 2 can be respectively placed at two end points needing to measure the distance. The main ranging assembly 1 is started, the main transmitting module 12 transmits a first ranging mechanical wave which can be received by the auxiliary receiving module 22 of the auxiliary ranging assembly 2, and the auxiliary acoustic wave identification processing module 21 transmits a second ranging mechanical wave which can be received by the main receiving module 13 through the auxiliary transmitting module 23 after processing. And then the main sound wave identification processing module 11 calculates the time difference between the first distance measurement mechanical wave sent out by the main transmitting module 12 and the second distance measurement mechanical wave received by the main receiving module 13, and the distance D between the main distance measurement assembly 1 and the auxiliary distance measurement assembly 2 can be obtained according to the propagation speed of the mechanical wave.
As shown in FIG. 1, the propagation velocity of the mechanical wave is v, the time point of the first ranging mechanical wave is t0, the time point of the second ranging mechanical wave is t3, and the propagation time of the mechanical wave is t3-t0, which can be stored in the main acoustic wave identification processing module 11. Thus, the distance can be calculated according to the formula D = (t 3-t 0) × v/2. Because the mechanical wave has certain penetrating power, the ultrasonic wave is adopted in the embodiment, the distance is measured by passing through obstacles, and the ultrasonic wave is practical and convenient.
As shown in fig. 2, the main acoustic wave recognition processing module 11 includes a main processing unit 111, a main amplitude-frequency driving unit 112, and a calculation unit 115, and a display unit 116;
the sub acoustic wave recognition processing module 21 includes a sub processing unit 211 and a sub amplitude-frequency driving unit 212;
the main receiving module 13 includes a main amplitude-frequency acquisition unit 131 and a main frequency selection unit 132;
the secondary receiving module 22 includes a secondary amplitude-frequency acquisition unit 221 and a secondary frequency selection unit 222, wherein the primary frequency selection unit 132 and the secondary frequency selection unit 222 are both crystal oscillator frequency selection modules. And screening the mechanical waves through a crystal oscillator frequency selection module, thereby identifying the first distance measurement mechanical waves and the second distance measurement mechanical waves.
The main processing unit 111 is respectively electrically connected with the main amplitude-frequency driving unit 112, the calculating unit 115, the display unit 116 and the main frequency selecting unit 132, and the main frequency selecting unit 132 is electrically connected with the main amplitude-frequency collecting unit 131;
the auxiliary processing unit 211 is electrically connected with the auxiliary amplitude-frequency driving unit 212 and the auxiliary frequency selecting unit 222 respectively, and the auxiliary frequency selecting unit 222 is electrically connected with the auxiliary amplitude-frequency acquiring unit 221;
the auxiliary frequency selection unit 222 controls the auxiliary amplitude-frequency acquisition unit 221 to receive the first distance-measuring mechanical wave, and the auxiliary processing unit 211 drives the auxiliary transmission module 23 to transmit the second distance-measuring mechanical wave through the auxiliary amplitude-frequency driving unit 212;
the main frequency selection unit 132 controls the main amplitude-frequency acquisition unit 131 to receive the second distance measurement mechanical wave;
the calculating unit 115 calculates the time difference and calculates the distance between the main ranging assembly 1 and the sub ranging assembly 2 according to the time difference and the preset sound wave velocity information, and the calculating unit 115 may adopt a single chip with a storage function and display the calculated distance D through the display unit 116. Considering the influence of the temperature and air pressure changes of different propagation media on the propagation velocity of the mechanical wave, the temperature detection selection module and the air pressure detection selection module can be electrically connected with the calculation unit 115, the propagation velocity v of the mechanical wave can be adjusted according to the ambient temperature and the ambient air pressure, and the calculation result is more accurate.
Considering that the time taken for the sub-acoustic wave identification processing module 21 to process the data is t2, the time information may be pre-stored in the calculating unit 115, and the distance may be calculated according to the formula D = (t 3-t0-t 2) × v/2, so that the calculation of the distance D is more accurate.
It is considered to reduce interference between the transmitting module and the receiving module. The main transmitting module 12 and the main receiving module 13 are arranged at intervals, and the auxiliary transmitting module 23 and the auxiliary receiving module 22 are arranged at intervals. And a main baffle plate 14 is arranged on one side of the main transmitting module 12 close to the main receiving module 13, and a secondary baffle plate 24 is arranged on one side of the secondary transmitting module 23 close to the secondary receiving module 22, so that the calculation of the distance D is more accurate.
Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. A distance measuring device based on mechanical waves, characterized by comprising a main distance measuring assembly (1) and at least one auxiliary distance measuring assembly (2);
the main ranging assembly (1) comprises a main sound wave identification processing module (11), a main transmitting module (12) and a main receiving module (13), wherein the main transmitting module (12) and the main receiving module are respectively electrically connected with the main sound wave identification processing module (11);
the auxiliary ranging assembly (2) comprises an auxiliary sound wave identification processing module (21), an auxiliary transmitting module (23) and an auxiliary receiving module (22), wherein the auxiliary transmitting module (23) and the auxiliary receiving module are respectively electrically connected with the auxiliary sound wave identification processing module (21);
the main transmitting module (12) is used for transmitting a first ranging mechanical wave to the outside for being received by the auxiliary receiving module (22), and the auxiliary sound wave identification processing module (21) identifies and processes the first ranging mechanical wave and then transmits a second ranging mechanical wave to the main receiving module (13) through the auxiliary transmitting module (23);
the main sound wave identification processing module (11) obtains the distance between the main ranging assembly (1) and the auxiliary ranging assembly (2) according to the time difference between the first ranging mechanical wave sent out by the main transmitting module (12) and the second ranging mechanical wave received by the main receiving module (13).
2. The mechanical wave based ranging apparatus according to claim 1,
the main acoustic wave identification processing module (11) comprises a main processing unit (111), a main amplitude-frequency driving unit (112), a calculating unit (115) and a display unit (116);
the sub acoustic wave identification processing module (21) comprises a sub processing unit (211) and a sub amplitude-frequency driving unit (212);
the main receiving module (13) comprises a main amplitude-frequency acquisition unit (131) and a main frequency selection unit (132);
the auxiliary receiving module (22) comprises an auxiliary amplitude-frequency acquisition unit (221) and an auxiliary frequency selection unit (222);
the main processing unit (111) is respectively electrically connected with the main amplitude-frequency driving unit (112), the calculating unit (115), the display unit (116) and the main frequency selecting unit (132), and the main frequency selecting unit (132) is electrically connected with the main amplitude-frequency acquiring unit (131);
the auxiliary processing unit (211) is electrically connected with the auxiliary amplitude-frequency driving unit (212) and the auxiliary frequency selecting unit (222) respectively, and the auxiliary frequency selecting unit (222) is electrically connected with the auxiliary amplitude-frequency acquiring unit (221);
the auxiliary frequency selection unit (222) controls the auxiliary amplitude-frequency acquisition unit (221) to receive the first distance measurement mechanical wave, and the auxiliary processing unit (211) drives the auxiliary transmitting module (23) to transmit the second distance measurement mechanical wave through the auxiliary amplitude-frequency driving unit (212);
the main frequency selection unit (132) controls the main amplitude-frequency acquisition unit (131) to receive the second distance measurement mechanical wave;
the calculating unit (115) calculates the time difference, calculates the distance between the main ranging assembly (1) and the auxiliary ranging assembly (2) according to the time difference and preset sound wave speed information, and the display unit (116) displays the distance.
3. The mechanical wave based distance measuring device according to claim 2, wherein said main frequency selecting unit (132) and said sub frequency selecting unit (222) are crystal oscillator frequency selecting modules.
4. The mechanical wave based ranging device according to claim 1, characterized in that the main transmitting module (12) is spaced apart from the main receiving module (13) and the secondary transmitting module (23) is spaced apart from the secondary receiving module (22).
5. The mechanical wave based ranging device according to claim 4, characterized in that a side of the main transmitting module (12) close to the main receiving module (13) is provided with a main baffle (14) and a side of the sub transmitting module (23) close to the sub receiving module (22) is provided with a sub baffle (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920902168.XU CN210181219U (en) | 2019-06-15 | 2019-06-15 | Distance measuring device based on mechanical waves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920902168.XU CN210181219U (en) | 2019-06-15 | 2019-06-15 | Distance measuring device based on mechanical waves |
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| Publication Number | Publication Date |
|---|---|
| CN210181219U true CN210181219U (en) | 2020-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920902168.XU Active CN210181219U (en) | 2019-06-15 | 2019-06-15 | Distance measuring device based on mechanical waves |
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| CN (1) | CN210181219U (en) |
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- 2019-06-15 CN CN201920902168.XU patent/CN210181219U/en active Active
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