CN201812038U - Distance measuring system for backing vehicle - Google Patents
Distance measuring system for backing vehicle Download PDFInfo
- Publication number
- CN201812038U CN201812038U CN2010202789847U CN201020278984U CN201812038U CN 201812038 U CN201812038 U CN 201812038U CN 2010202789847 U CN2010202789847 U CN 2010202789847U CN 201020278984 U CN201020278984 U CN 201020278984U CN 201812038 U CN201812038 U CN 201812038U
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- processor
- distance measuring
- measuring system
- modulator
- ultrasonic receiver
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- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The utility model relates to a distance measuring system for backing a vehicle, which comprises a processor, a memory, an ultrasonic transmitter, a modulator (a transmitting circuit), a phase detector, an ultrasonic receiver, a demodulator (an amplifier circuit), a display, a voice prompt system and the like. The distance measuring system is characterized in that the processor is connected with the memory, and connected with the modulator (the transmitting circuit) and the phase detector, the modulator (the transmitting circuit) is connected with the ultrasonic transmitter, returned ultrasonic is connected with the ultrasonic receiver, the ultrasonic receiver is connected with the demodulator (the amplifier circuit), and the processor is connected with the voice prompt system, and further connected with the display. The distance measuring system overcomes the shortage that no distance measuring system which allows use of voice prompting along with use of the distance measuring system during vehicle backing is provided.
Description
Technical field
The utility model relates to a kind of system of measuring distance of the usefulness of moveing backward.
Background technology
Ultrasound wave: 2 minor increments of vibrating between the identical point of position claim wavelength.
The distance that ripple was passed in unit interval claims the velocity of sound.
Just repeat once every a regular time T, every wonderful periodicity of finishing claims frequency.
Acoustic pressure is the poor of certain some moment and this static pressure.
The cooperation acoustic pressure equal every row sound wave acoustic pressure vector and.
All particles are all got in touch each other, and the particle around the energy of vibration particle can pass to also causes vibration.Continuous wave is to be infinite fluctuation the particle vibration duration.
Sound wave is the propagation of mechanical vibration in elastic medium.
Electromagnetic wave is that alternating electromagnetic field is with the propagation of the light velocity in the space.
Pulsating wave is the limited fluctuation of vibration duration.
Infrasonic wave f＜20HZ
Ultrasound wave f＞20KHZ
In ultrasound examination, through frequency range 0.5-10MHZ commonly used.
Plane wave, acoustic pressure do not become with distance.
Plane wave impinges perpendicularly on the big planar interface of 2 media, and an incident wave energy part enters medium (transmission), and another part energy returns (reflection).
On the interface almost total reflection be that reflection wave is greater than transmitted wave interface matter.
Increase with distance decays.(range attenuation)
Inhomogeneous and the decay that causes of material.(scatter attenuation)
Absorbed and the decay that causes.(attenuation by absorption)
Decay is the size of crystal grain and the relation of wavelength.
Many cars the time are used voice suggestion on one side in reversing, on one side reversing, sometimes, also need another person in one side of car commander's reversing, so as not to other car, thing collision.Also do not use voice suggestion on one side when reversing, Yi Bian use the system of measuring distance, I have invented the system of the measuring distance of reversing usefulness.
(3) summary of the invention
Technical problem to be solved in the utility model: the system of the measuring distance of reversing usefulness.
The technical scheme that the technical matters that solves adopts: the system of the measuring distance of reversing usefulness, comprise processor, storer, ultrasound wave sends device, modulator, phase-sensitive detector, ultrasonic receiver, detuner, display, speech prompting system etc., it is characterized in that processor is connected with storer, processor is connected with modulator, is connected with phase-sensitive detector, and modulator sends device with ultrasound wave and is connected, returning ultrasound wave is connected with ultrasonic receiver, ultrasonic receiver is connected with detuner, and processor is connected with speech prompting system, and processor is connected with display.
Modulator (radiating circuit) improves voltage to improve emissive porwer with transistor and chip circuit.Detuner (amplifying circuit and treatment circuit) improves measuring accuracy with the amplifier tube and the capacitance resistance ware of higher gain.
Counting circuit is that the ultrasound wave that returns is exported square wave through amplifying, and square wave is proportional to apart from length.
The ultrasound wave that calculating is sent run into barrier apart from length.For example: return 0.15 second used time of ultrasound wave, the ultrasound wave that sends is to 5 meters of the distances of barrier, or the like.
The processor connected storage is stored the process result of the measuring distance of each reversing.
Processor connects speech prompting system, and speech prompting system prelists and records the voice of each data, each data that the corresponding voice suggestion of processor processes data prelists, and processor obtains range data and sends the reversing voice suggestion automatically.
When sending ultrasound wave, after being arranged, a phase-sensitive detector phase-detecting returns to processor.To adjust the radiating circuit of modulator.
Return ultrasound wave and enter ultrasonic receiver, detuner (amplifying circuit and treatment circuit) has a gain and a holding circuit, to improve the stably measured precision.
Behind the processor processing result, handle numeral and pass to display.
(4) description of drawings
Fig. 1 is system's base conditioning connection diagram of the measuring distance of reversing usefulness.
Fig. 2 is system's button synoptic diagram of the measuring distance of reversing usefulness.
(5) embodiment
The system of measuring distance to reversing usefulness is described further below:
Shown in Figure 1, the 1st, the system processor (comprising counting circuit) of the measuring distance of reversing usefulness.The 2nd, modulation circuit, modulation circuit premodulation frequency of ultrasonic, the velocity of sound, wavelength, it is fixed to send for 1,000,000 times according to the repetition rate per second.The 3rd, ultrasound wave sends device, sends and returns to ultrasonic receiver when ultrasound wave runs into barrier.The 4th, phase-sensitive detector is connected with processor, and modulation circuit is carried out transmission information, and the phase-detecting data transfer is given processor.The 5th, ultrasonic receiver, ultrasonic receiver connects detuner (amplifying circuit and treatment circuit).The 6th, detuner (amplifying circuit and treatment circuit) amplifies, handles returning ultrasound wave ... to offer counting circuit computed range numeral.The 7th, storer, processor and memory interconnect, the each reversing process data of memory stores are with inquiry.The 8th, display, processor is connected with display, and the data of processor processing pass display.The 9th, speech prompting system, processor is connected with speech prompting system, the processor processing voice suggestion.
Shown in Figure 2, the 21st, system's appearance of the measuring distance of reversing usefulness can embed use, also can protrude use.The 22nd, the opening of switch.The 23rd, the pass of switch.The 24th, display, display display digit equal length unit.
Native system also can use in the field of any the same terms such as ship.
Claims (2)
1. the system of the measuring distance of reversing usefulness comprises processor, storer, ultrasound wave sends device, modulator, phase-sensitive detector, ultrasonic receiver, detuner, display, speech prompting system is characterized in that processor is connected with storer, and processor is connected with modulator, be connected with phase-sensitive detector, modulator sends device with ultrasound wave and is connected, and returns ultrasound wave and is connected with ultrasonic receiver, ultrasonic receiver is connected with detuner, and processor is connected with speech prompting system, and processor is connected with display.
2. the system of the measuring distance of reversing usefulness according to claim 1, system's appearance of the measuring distance of the usefulness that it is characterized in that moveing backward can embed use, also can protrude use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202789847U CN201812038U (en) | 2010-08-02 | 2010-08-02 | Distance measuring system for backing vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202789847U CN201812038U (en) | 2010-08-02 | 2010-08-02 | Distance measuring system for backing vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201812038U true CN201812038U (en) | 2011-04-27 |
Family
ID=43894979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202789847U Expired - Fee Related CN201812038U (en) | 2010-08-02 | 2010-08-02 | Distance measuring system for backing vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201812038U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113514898A (en) * | 2021-05-13 | 2021-10-19 | 山东交通学院 | Gravitational acceleration experiment system and method based on ultrasonic measurement rotation curve |
-
2010
- 2010-08-02 CN CN2010202789847U patent/CN201812038U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113514898A (en) * | 2021-05-13 | 2021-10-19 | 山东交通学院 | Gravitational acceleration experiment system and method based on ultrasonic measurement rotation curve |
| CN113514898B (en) * | 2021-05-13 | 2023-12-22 | 山东交通学院 | Gravity acceleration experiment system and method based on ultrasonic measurement rotation curve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20110802 |