CN208013420U - A kind of correlation type ultrasonic rangefinder - Google Patents
A kind of correlation type ultrasonic rangefinder Download PDFInfo
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- CN208013420U CN208013420U CN201820371525.XU CN201820371525U CN208013420U CN 208013420 U CN208013420 U CN 208013420U CN 201820371525 U CN201820371525 U CN 201820371525U CN 208013420 U CN208013420 U CN 208013420U
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- 230000003287 optical effect Effects 0.000 claims abstract description 10
- 230000005284 excitation Effects 0.000 description 12
- 230000000644 propagated effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000002604 ultrasonography Methods 0.000 description 3
- 239000011358 absorbing material Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000002463 transducing effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
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- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The utility model discloses a kind of correlation type ultrasonic rangefinders, are made of receiving terminal and transmitting terminal.Transmitting terminal includes transmitting terminal ultrasonic sensor and transmitting terminal infrared sensor and its radiating circuit.Receiving terminal includes receiving terminal ultrasonic sensor receiving terminal infrared sensor and its receiving circuit and microcontroller, and ultrasonic wave receiving circuit and mid-infrared optical receiving circuit are separately connected single-chip microcomputer signal input interface.Receiving terminal is additionally provided with temperature sensor, and the temperature sensor connects the signal input interface of microcontroller.Transmitting terminal is simultaneously emitted by infrared light-wave and ultrasonic signal, and receiving terminal receives the infrared light-wave and ultrasonic wave that transmitting terminal is sent out, the receiving time of infrared light-wave is set as launch time, timing ultrasonic propagation time, to calculate testing distance.The utility model is used as timing commencing signal using infrared light, simple in structure, and it is strong that ultrasonic wave receives ability, the ultrasonic wave decrease problem caused by factors such as overcomes ultrasonic reflections and absorbed.
Description
Technical field
The utility model is related to a kind of ultrasonic range finder more particularly to a kind of correlation type ultrasonic rangefinders.
Background technology
Ultrasonic sensor is also known as ultrasonic transducer, and electric signal can be converted into acoustic energy by it, with the frequency of 20KH or more
Rate sends out ultrasonic wave.
Ultrasonic wave can at different rates be propagated in gas, liquid, solid, the propagation in same uniform dielectric
Speed is changeless.In uniform dielectric, ultrasonic wave has certain directive property, when encountering two kinds of different media of density
When, ultrasonic wave can reflect.
Traditional ultrasonic range finder receiving terminal and transmitting terminal are integrated.It has two big major functions, first, sending out sharp
Signal is encouraged, driving ultrasonic sensor sends out ultrasound, and the ultrasonic wave sent out is propagated in gas, is propagating on the way if encountered
Testee is just reflected back immediately；Second is that ultrasound signal receipt circuit, processor of single chip computer meter built in ultrasonic wave distance meter
It calculates ultrasonic wave and sends out and receive the time difference between ultrasonic wave, the range measurement principle of ultrasonic range finder is basis：Distance S=（Speed
Spend V * time T）/ 2, wherein speed V is spread speed of the ultrasonic wave in gas, and time T is to be issued it from ultrasonic wave
Afterwards, encounter testee to be reflected back, then the time between being received.
Traditional ultrasonic range finder is in mobile object space ranging, testee is too small or echo is not strong, testee
Shape is irregular, testee is that ranging effect is undesirable under the scenes such as sound-absorbing material or even can not ranging.If using to penetrating
Formula ultrasonic ranging, one end emit ultrasonic wave, and the other end receives ultrasonic wave, and testing distance is calculated with one way transmission time, can be with
Overcome the ultrasonic reflections signal under some special screnes of the existing technology weak, ranging effect is undesirable or even can not ranging
Problem.But correlation type ultrasonic ranging has what a ultrasonic wave transmitting initial time determined, how accurate receiving terminal is
Determine transmitting terminal ultrasonic wave launch time, how receiving terminal at the time of transmitting terminal emits ultrasonic wave accurately starts timing and timing
Technological means will be also easy to implement, and be a problem for needing to overcome for perplexing the art.
Utility model content
Main technical problem to be solved in the utility model is to overcome prior art defect, provides a kind of correlation ultrasound
Wave rangefinder, timing means are convenient accurate, can in mobile object space ranging, testee is too small or echo is not strong, tested
Object shape is irregular, testee is used under the scenes such as sound-absorbing material.
In order to solve the above-mentioned technical problem, the utility model correlation type ultrasonic rangefinder, by transmitting terminal and receiving terminal group
At.It is characterized in that：
The transmitting terminal, including it is transmitting terminal ultrasonic sensor, ultrasonic wave transmitting circuit, transmitting terminal infrared sensor, red
Outer optical transmission circuit and ON-OFF control circuit, the ultrasonic wave transmitting circuit of transmitting terminal ultrasonic sensor connection, transmitting terminal are red
Outer sensor connects infrared light emission circuit, the ultrasonic wave transmitting circuit of ON-OFF control circuit control and infrared light emission circuit synchronization
Work.
The receiving terminal, including it is receiving terminal ultrasonic sensor, ultrasonic wave receiving circuit, receiving terminal infrared sensor, red
Outer optical receiving circuit and microcontroller, the receiving terminal ultrasonic sensor connect ultrasonic wave receiving circuit, and the receiving terminal is infrared
Sensor connects mid-infrared optical receiving circuit, and the ultrasonic wave receiving circuit and mid-infrared optical receiving circuit are separately connected single-chip microcomputer signal
Input interface.
The transmitting terminal ultrasonic sensor and receiving terminal ultrasonic sensor, are all made of plated film chip, are suitable for air
Ranging in medium, Level measurement electro-acoustic transducing device.
Receiving terminal is additionally provided with temperature sensor, and the temperature sensor connects the signal input interface of microcontroller.
The utility model transmitting terminal and receiving terminal are mutual indepedent, and transmitting terminal and receiving terminal are carried out together using infrared light-wave
Step.Transmitting terminal sends out infrared light-wave signal, and the infrared light-wave sent out is propagated in gas, and receiving terminal receives transmitting terminal hair
The infrared light-wave gone out, since the spread speed of infrared light-wave is the light velocity, the transmitting terminal and receiving terminal limited distance the case where
Under, it is believed that the receiving time of infrared light-wave is exactly its launch time.
The utility model correlation type ultrasonic rangefinder ranging course of work is as follows：
1. transmitting terminal is simultaneously emitted by infrared light-wave synchronizing signal and ultrasonic excitation signals, the infrared ray sent out
Wave and ultrasonic wave are propagated in gas.
2. since the spread speed of infrared light-wave is the light velocity, receiving terminal will receive infrared light-wave synchronizing signal first,
In the case of transmitting terminal and receiving terminal limited distance, it is believed that the receiving time of infrared light-wave synchronizing signal is exactly its hair
Penetrate the time.Since infrared light-wave synchronizing signal and ultrasonic excitation signals are simultaneously emitted by, it is believed that infrared light-wave
The receiving time of synchronizing signal is exactly the launch time of ultrasonic excitation signals.
3. receiving terminal receives the ultrasonic excitation signals that transmitting terminal is sent out.Ultrasonic propagation velocity is the velocity of sound, is much smaller than
Infrared waves synchronizing signal spread speed（The light velocity）.2. according to step, ultrasonic excitation signals, which are received with launch time difference, is
The receiving time of ultrasonic excitation signals receiving time and infrared light-wave synchronizing signal, is denoted as T.Transmitting terminal and receiving terminal away from
From the S=velocity of sound × T.
The utility model correlation type ultrasonic rangefinder, transmitting terminal and receiving terminal ultrasonic wave are to penetrating, using infrared light conduct
Timing commencing signal, simple in structure, it is strong that ultrasonic wave receives ability, caused by the factors such as overcoming ultrasonic reflections and being absorbed
Ultrasonic wave weaken problem, and timing facilitate it is accurate, rangefinder it is more adaptable.
Description of the drawings
Fig. 1 is the utility model correlation type ultrasonic rangefinder transmitting terminal functional block diagram.
Fig. 2 is the utility model correlation type ultrasonic rangefinder receiving terminal functional block diagram.
Fig. 3 is the utility model correlation type ultrasonic rangefinder receiving terminal circuit schematic block diagram.
Specific implementation mode
It elaborates to the utility model below in conjunction with attached drawing.
As shown in Figure 1, the transmitting terminal of the utility model correlation type ultrasonic rangefinder, including transmitting terminal supersonic sensing
Device, ultrasonic wave transmitting circuit, transmitting terminal infrared sensor, infrared light emission circuit and ON-OFF control circuit, the transmitting terminal are super
The ultrasonic wave transmitting circuit of sonic sensor connection, transmitting terminal infrared sensor connect infrared light emission circuit, ON-OFF control circuit
The ultrasonic wave transmitting circuit of control and the work of infrared light emission circuit synchronization.
As shown in Figure 2,3, the receiving terminal of the utility model correlation type ultrasonic rangefinder, including receiving terminal supersonic sensing
Device, ultrasonic wave receiving circuit, receiving terminal infrared sensor, mid-infrared optical receiving circuit and microcontroller, the receiving terminal ultrasonic wave pass
Sensor connects ultrasonic wave receiving circuit, and the receiving terminal infrared sensor connects mid-infrared optical receiving circuit, and the ultrasonic wave receives
Circuit and mid-infrared optical receiving circuit are separately connected single-chip microcomputer signal input interface.The signal output of microcontroller connects liquid crystal display,
For human-computer interaction.The signal input interface of the microcontroller can also connect temperature sensor, and temperature is recorded for microcontroller
The environment temperature of sensor measurement.The ultrasonic sensor uses plated film chip, ranging, level inspection suitable for air dielectric
The electro-acoustic transducing device of survey.The transmitting terminal of ultrasonic wave launches certain length ultrasonic wave and infrared waves by radiating circuit, by
Ultrasonic wave and infrared waves are emitted in air by transmitting terminal ultrasonic sensor and transmitting terminal infrared sensor, and in air
It propagates.Microcontroller using ultrasonic wave and infrared waves receiving time is poor, environment temperature and the velocity of sound calculate transmitting terminal and reception
The distance at end.
Its ranging work the specific steps are：
1. finding out the spread speed of ultrasonic wave under environment temperature, it is represented by：
ForWhen the aerial spread speed of ultrasonic wave,For temperature impact factor, they are a constant values.For the collected environment temperature of temperature sensor.
2. finding out the distance S of correlation type ultrasonic rangefinder transmitting terminal and receiving terminal.
S=C×(t0-tS)
C is the aerial spread speed of ultrasonic wave under current environmental temperature, t0For receiving terminal ultrasonic wave receiving time, tS
For transmitting terminal ultrasonic wave launch time, it is approximate identical as the receiving time of infrared waves.
Step 1. transmitting terminal is simultaneously emitted by infrared light-wave synchronizing signal and ultrasonic excitation signals, the infrared ray sent out
Light wave and ultrasonic wave are propagated in gas.
Since the spread speed of infrared light-wave is the light velocity, receiving terminal will receive infrared light-wave and synchronizes letter step 2. first
Number, in the case of transmitting terminal and receiving terminal limited distance, it is believed that the receiving time of infrared light-wave synchronizing signal is exactly
Its launch time.Since infrared light-wave synchronizing signal and ultrasonic excitation signals are simultaneously emitted by, it is believed that infrared ray
The receiving time of light wave synchronizing signal is exactly the launch time of ultrasonic excitation signals.
Step 3. receiving terminal receives the ultrasonic excitation signals that transmitting terminal is sent out.Ultrasonic propagation velocity is the velocity of sound, far
Less than infrared waves synchronizing signal spread speed（The light velocity）.2. according to step, ultrasonic excitation signals receive poor with launch time
The as receiving time of ultrasonic excitation signals receiving time and infrared light-wave synchronizing signal, is denoted as T.Transmitting terminal and receiving terminal
The distance S=velocity of sound × T.
Claims (3)
1. a kind of correlation type ultrasonic rangefinder, is made of transmitting terminal and receiving terminal；It is characterized in that：
The transmitting terminal, including transmitting terminal ultrasonic sensor, ultrasonic wave transmitting circuit, transmitting terminal infrared sensor, infrared light
Radiating circuit and ON-OFF control circuit, the ultrasonic wave transmitting circuit of transmitting terminal ultrasonic sensor connection, the infrared biography of transmitting terminal
Sensor connects infrared light emission circuit, the ultrasonic wave transmitting circuit of ON-OFF control circuit control and infrared light emission circuit synchronization work
Make；
The receiving terminal, including receiving terminal ultrasonic sensor, ultrasonic wave receiving circuit, receiving terminal infrared sensor, infrared light
Receiving circuit and microcontroller, the receiving terminal ultrasonic sensor connect ultrasonic wave receiving circuit, the receiving terminal infrared sensing
Device connects mid-infrared optical receiving circuit, and the ultrasonic wave receiving circuit and mid-infrared optical receiving circuit are separately connected single-chip microcomputer signal input
Interface.
2. correlation type ultrasonic rangefinder according to claim 1, it is characterized in that：The transmitting terminal ultrasonic sensor and
Receiving terminal ultrasonic sensor is all made of plated film chip.
3. correlation type ultrasonic rangefinder according to claim 1, it is characterized in that：Receiving terminal is additionally provided with temperature sensor,
The temperature sensor connects the signal input interface of microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820371525.XU CN208013420U (en) | 2018-03-19 | 2018-03-19 | A kind of correlation type ultrasonic rangefinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820371525.XU CN208013420U (en) | 2018-03-19 | 2018-03-19 | A kind of correlation type ultrasonic rangefinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208013420U true CN208013420U (en) | 2018-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820371525.XU Expired - Fee Related CN208013420U (en) | 2018-03-19 | 2018-03-19 | A kind of correlation type ultrasonic rangefinder |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019233145A1 (en) * | 2018-06-07 | 2019-12-12 | 阿里巴巴集团控股有限公司 | Payment method, distance measurement method, payment device, and distance measurement device |
| CN111596286A (en) * | 2020-06-12 | 2020-08-28 | 国创新能源汽车智慧能源装备创新中心(江苏)有限公司 | Distance measuring method and device |
| CN112291710A (en) * | 2020-09-21 | 2021-01-29 | 宇龙计算机通信科技(深圳)有限公司 | Distance measuring method, distance measuring device, storage medium and electronic equipment |
-
2018
- 2018-03-19 CN CN201820371525.XU patent/CN208013420U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019233145A1 (en) * | 2018-06-07 | 2019-12-12 | 阿里巴巴集团控股有限公司 | Payment method, distance measurement method, payment device, and distance measurement device |
| CN111596286A (en) * | 2020-06-12 | 2020-08-28 | 国创新能源汽车智慧能源装备创新中心(江苏)有限公司 | Distance measuring method and device |
| CN112291710A (en) * | 2020-09-21 | 2021-01-29 | 宇龙计算机通信科技(深圳)有限公司 | Distance measuring method, distance measuring device, storage medium and electronic equipment |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191115 Address after: 210000, No. 6, Changjiang back street, Xuanwu District, Jiangsu, Nanjing Patentee after: Nanjing Osai Environmental Protection Technology Co.,Ltd. Address before: 212031 298 South Xu Road, run Zhou District, Zhenjiang, Jiangsu Patentee before: ZHENJIANG YUNCHEN INFORMATION TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181026 |
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| CF01 | Termination of patent right due to non-payment of annual fee |