CN107390223A - A kind of simple pulse sound range unit - Google Patents
A kind of simple pulse sound range unit Download PDFInfo
- Publication number
- CN107390223A CN107390223A CN201710270133.4A CN201710270133A CN107390223A CN 107390223 A CN107390223 A CN 107390223A CN 201710270133 A CN201710270133 A CN 201710270133A CN 107390223 A CN107390223 A CN 107390223A
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- CN
- China
- Prior art keywords
- circuit
- pulse
- sine
- wave
- range unit
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
- G01S15/06—Systems determining the position data of a target
- G01S15/08—Systems for measuring distance only
- G01S15/10—Systems for measuring distance only using transmission of interrupted, pulse-modulated waves
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Acoustics & Sound (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The present invention relates to range unit technical field, discloses a kind of simple pulse sound range unit.The present invention includes pulse generating device, pulse sound reception device and time measurement device；The pulse generating device uses basic trigger pulse occurring mode, and the device includes rectangle wave generation circuit, sine wave generating circuit, burst pulse, switch control and power amplification circuit；The burst pulse is provided by single-chip processor i/o mouth.The single-shot trigger circuit that the rectangle wave generation circuit is made up of 555 timers, it exports the trigger signal as Rc sine-wave oscillators；The RC sine wave oscillation circuits that the sine wave generating circuit is made up of individual RC sine-wave oscillators group, can occurrence frequency is single and the sine wave signal of frequency-adjustable, and the pumping signal of sound source is used as using it.Circuit of the present invention is simple, cost-effective, has high-precision characteristic, also with contactless, reading is directly perceived, simple operation and other advantages.
Description
Technical field
The present invention relates to range unit technical field, more particularly, to a kind of simple pulse sound range unit.
Background technology
Acoustic range is in the case of known acoustic wave propagation velocity, by measuring propagation of the acoustic signals between testing distance
Time, a kind of method of testing distance is calculated using the aerial spread speed of sound wave and the product of time, be a kind of high
Effect, easily distance-finding method.Acoustic ranging device is generally high frequency at present, and volume is heavy, and cost is expensive, inconvenient to carry, is unsuitable for
Outgoing measurement.
The content of the invention
It is an object of the invention to solve the above mentioned problem of prior art appearance, there is provided a kind of simple pulse sound ranging dress
Put, realize that the circuit that pulse sound occurs is simple, cost-effective using 555 timers and RC sine-wave oscillators：Determined with programmable
When device/counter 82C54 carry out time measurement there is high-precision characteristic.This range unit also have contactless, reading it is directly perceived,
Simple operation and other advantages；And general ranging closely is disclosure satisfy that, function closer to reality, there is good practicality and feasible
Property.
A kind of simple pulse sound range unit, it is characterised in that：Including pulse generating device, pulse sound reception device and
Time measurement device.
The pulse generating device uses basic trigger pulse occurring mode, and the device includes square wave and electricity occurs
Road, sine wave generating circuit, burst pulse, switch control and power amplification circuit.The burst pulse is provided by single-chip processor i/o mouth.
The single-shot trigger circuit that the rectangle wave generation circuit is made up of 555 timers, its output are used as Rc sine-wave oscillators
Trigger signal.The RC sine wave oscillation circuits that sine wave generating circuit is made up of individual RC sine-wave oscillators group, can occur
Frequency is single and the sine wave signal of frequency-adjustable, and the pumping signal of sound source is used as using it.
The pulse sound reception device includes microphone, voltage amplifier circuit, filter circuit.
The time measurement module uses the Time Measurement Unit being made up of single-chip microcomputer and programmable counter/timer 82C54.
Using 82C54 as counter, three 16 independent digit counters are possessed inside it, can be real using one of counter
The measurement of the existing pulse acoustic transceiver sound time difference.
Further, the sine wave generating circuit uses wien bridge oscillator, and the integrated transporting discharging in circuit uses
AD817。
Further, the power amplification circuit uses low pressure audio-frequency power amplifier integrated chip LM386.
Further, the microphone selects condenser microphone.
Further, the time measurement module contains charactron, can display distance data.
Compared with prior art, the present invention realizes the electricity of pulse sound generation using 555 timers and RC sine-wave oscillators
Road is simple, cost-effective：There is high-precision characteristic with programmable timer/counter 82C54 carries out time measurement.This ranging fills
Putting also has that contactless, reading is directly perceived, simple operation and other advantages；And general ranging closely is disclosure satisfy that, function is pressed close to
Reality, there is good practicality and feasibility.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is pulse generating device total structure figure of the present invention；
Fig. 2 is pulse generating device circuit diagram of the present invention；
Fig. 3 is pulse sound reception device circuit diagram of the present invention；
Fig. 4 is time measurement module principle block diagram of the present invention.
Embodiment
The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, apparent is clearly defined so as to be made to protection scope of the present invention.
A kind of simple pulse sound range unit, it is characterised in that：Including pulse generating device, pulse sound reception device and
Time measurement device.
As shown in figure 1, the pulse generating device uses basic trigger pulse occurring mode, the device includes rectangle
Wave generation circuit, sine wave generating circuit, burst pulse, switch control and power amplification circuit.The burst pulse is by single-chip processor i/o
Mouth provides.The single-shot trigger circuit that the rectangle wave generation circuit is made up of 555 timers, its output are used as Rc sine waves
The trigger signal of oscillator.The RC sine wave oscillation circuits that sine wave generating circuit is made up of individual RC sine-wave oscillators group,
Can occurrence frequency is single and the sine wave signal of frequency-adjustable, and the pumping signal of sound source is used as using it.
Especially, the sine wave generating circuit uses wien bridge oscillator, and the integrated transporting discharging in circuit uses
AD817。
Especially, the power amplification circuit uses low pressure audio-frequency power amplifier integrated chip LM386, its outward element
It is few, and gain amplifier can be adjusted to 200 by outward element from 20.Pulse generating device circuit diagram is as shown in Figure 2.
Pulse sound reception device circuit diagram as shown in Figure 3.The pulse sound reception device includes microphone, voltage amplification electricity
Road, filter circuit.Microphone is the sensor for converting sound waves into corresponding electric signal.Air pressure makes sensing as caused by sound
The vibrating membrane vibration of device, and then this mechanical movement is converted into the change of electric parameter by transformed device.Microphone is that whole receive fills
The first link put, whether its performance quality and use are proper, have highly important shadow to the electroacoustic index of whole device
Ring.Because the output voltage of microphone is in millivolt level, so to enable signals to progress information processing must enter to input signal
Row amplification.From the voltage differential-mode amplifier of the adjustable audio integrated amplifier LM386 of the voltage gain adjustable gains formed.Finally
The signal output that will be received by comparator shaping.
The microphone selects condenser microphone.
The time measurement module uses the Time Measurement Unit being made up of single-chip microcomputer and programmable counter/timer 82C54.
Using 82C54 as counter, three 16 independent digit counters are possessed inside it, can be real using one of counter
The measurement of the existing pulse acoustic transceiver sound time difference.Time measurement module principle block diagram is as shown in Figure 4.
Especially, the time measurement module contains charactron, can display distance data.
The trigger signal that audible signal starts and stopped respectively as counter with reception signal.In transmitting voice signal
Meanwhile start counter, when receiving voice signal, stop counting, so as to which the accurate control of time can be realized.
When acoustical generator is not triggered, 82C54, which is in, stops count status：After acoustical generator is triggered, trigger signal is same
When give 82C54 GATE gate terminals (now GATE is changed into high level from low level) unison counter of counter start to count
Number, the upset of GATE gate terminals is triggered when microphone receives pulse acoustical signal, so that counter stops counting.Pass through reading
Counter Value and initial value can calculate the time difference for being transmitted into reception.When transmitting, receive time measurement after, according to away from
From calculation formulad=∆t×v(vFor the aerial spread speed of pulse sound) can be by single-chip microcomputer by between two microphones
Distance output, and come out by numeral method.
Although being described in conjunction with the accompanying embodiments of the present invention, patent owner can be in appended claims
Within the scope of make various deformations or amendments, as long as no more than the present invention claim described by protection domain, all should
Within protection scope of the present invention.
Claims (5)
- A kind of 1. simple pulse sound range unit, it is characterised in that：Including pulse generating device, pulse sound reception device and when Between measurement apparatus；The pulse generating device uses basic trigger pulse occurring mode, and the device includes rectangle wave generation circuit, just String wave generation circuit, burst pulse, switch control and power amplification circuit；The burst pulse is provided by single-chip processor i/o mouth；The single-shot trigger circuit that the rectangle wave generation circuit is made up of 555 timers, its output are shaken as Rc sine waves Swing the trigger signal of device；The RC sine-wave oscillations electricity that the sine wave generating circuit is made up of individual RC sine-wave oscillators group Road, can occurrence frequency is single and the sine wave signal of frequency-adjustable, and the pumping signal of sound source is used as using it；The pulse sound reception device includes microphone, voltage amplifier circuit, filter circuit；The time measurement module uses the Time Measurement Unit being made up of single-chip microcomputer and programmable counter/timer 82C54, uses 82C54 possesses three 16 independent digit counters, arteries and veins can be achieved using one of counter as counter inside it Rush the measurement of the acoustic transceiver sound time difference.
- 2. range unit according to claim 1, it is characterised in that：The sine wave generating circuit is vibrated using Dendrolimus kikuchii Circuit, the integrated transporting discharging in circuit use AD817.
- 3. range unit according to claim 1, it is characterised in that：The power amplification circuit uses low pressure audio power Amplifier integrated chip LM386.
- 4. range unit according to claim 1, it is characterised in that：The microphone selects condenser microphone.
- 5. range unit according to claim 1, it is characterised in that：The time measurement module contains charactron, can show Show range data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710270133.4A CN107390223A (en) | 2017-04-24 | 2017-04-24 | A kind of simple pulse sound range unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710270133.4A CN107390223A (en) | 2017-04-24 | 2017-04-24 | A kind of simple pulse sound range unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107390223A true CN107390223A (en) | 2017-11-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710270133.4A Withdrawn CN107390223A (en) | 2017-04-24 | 2017-04-24 | A kind of simple pulse sound range unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107390223A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010185706A (en) * | 2009-02-10 | 2010-08-26 | Institute Of National Colleges Of Technology Japan | Ultrasonic sensor system |
| CN204744864U (en) * | 2015-05-26 | 2015-11-11 | 何天生 | Lead blind system based on ultrasonic ranging |
| CN205193278U (en) * | 2015-07-23 | 2016-04-27 | 内蒙古工业大学 | Automatic range unit based on ultrasonic sensor |
-
2017
- 2017-04-24 CN CN201710270133.4A patent/CN107390223A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010185706A (en) * | 2009-02-10 | 2010-08-26 | Institute Of National Colleges Of Technology Japan | Ultrasonic sensor system |
| CN204744864U (en) * | 2015-05-26 | 2015-11-11 | 何天生 | Lead blind system based on ultrasonic ranging |
| CN205193278U (en) * | 2015-07-23 | 2016-04-27 | 内蒙古工业大学 | Automatic range unit based on ultrasonic sensor |
Non-Patent Citations (1)
| Title |
|---|
| 宋寿鹏等: "一种用于多界面大声程目标体的超声检测电路", 《应用基础与工程科学学报》 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171124 |
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| WW01 | Invention patent application withdrawn after publication |