CN106886174A - Debris flow infrasound signal front end post circuit - Google Patents
Debris flow infrasound signal front end post circuit Download PDFInfo
- Publication number
- CN106886174A CN106886174A CN201510938740.4A CN201510938740A CN106886174A CN 106886174 A CN106886174 A CN 106886174A CN 201510938740 A CN201510938740 A CN 201510938740A CN 106886174 A CN106886174 A CN 106886174A
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- CN
- China
- Prior art keywords
- infrasound
- resistance
- signal
- debris flow
- potentiometer
- Prior art date
- 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
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24024—Safety, surveillance
Abstract
The present invention provides a kind of debris flow infrasound signal front end post circuit, including：Noise reduction and frequency-selecting module, for obtaining voice signal, and carry out noise reduction and frequency-selecting treatment to the voice signal, obtain infrasound signals；Comparison module, for the infrasound signals and predetermined threshold value to be compared；Microprocessor, the output signal for gathering comparison module, and control signal is generated according to the output signal, the control signal is used to control the working condition of debris flow infrasound monitoring device；The circuit can reduce the noise of debris flow infrasound signal, increase the real-time of debris flow infrasound signal transacting, reduce the data volume of Surveillance center's treatment, effectively reduce system power dissipation.
Description
Technical field
The present invention relates to a kind of front end post circuit, more particularly to a kind of debris flow infrasound signal front end duty
Keep circuit.
Background technology
In formation and motion process, lithosphere can be produced mud-rock flow during collision and extruding
Stabilization is propagated and frequency content is compared with the infrasound concentrated in air, the infrasound have propagation distance it is remote,
Penetration power is strong, be not easy the characteristics of decaying, and is widely used in mud-stone flow disaster monitoring.Therefore, state
Interior expert has made intensive studies, the patent of invention " system for monitoring, forecasting and warning mud-rock flow " of Shi Zhe et al.
It is middle that infrasonic monitoring technology is applied in mud-stone flow disaster forecasting and warning.Wei Fang strong patent of invention " mud
Rock glacier infrasound signals screening technique, generation localization method, path monitoring method " proposes a kind of mudstone
The infrasonic sound data that stream infrasound signals screening technique, i.e. infrasound sensor primitive will be gathered send in real time extremely supervises
Control center, Surveillance center is analyzed to the data for receiving, processes and early warning.The mudstone that Chengdu lattice are caused
Stream infrasound alarm is carried out by the way that field real-time acquisition acquisition infrasound information is sent to Surveillance center
Analyze and process to realize early warning.
Application of the above infrasonic sound in mud-rock flow monitoring is taken a broad view of, generally using Real-time Collection infrasound signals simultaneously
The method of analyzing and processing, the method devotes a tremendous amount of time acquisition process background noise, not only real-time
Cannot be guaranteed, and considerably increase the power consumption of system, meanwhile, can also increase the number of Surveillance center
According to treating capacity and communication increment expense.
The content of the invention
It is given below on brief overview of the invention, to provide on some sides of the invention
The basic comprehension in face.It should be appreciated that this general introduction is not on exhaustive general introduction of the invention.It
It is not intended to determine crucial or pith of the invention, nor intended limitation model of the invention
Enclose.Its purpose only provides some concepts in simplified form, more detailed in this, as what is discussed after a while
The preamble of thin description.
To solve the above problems, the present invention proposes a kind of debris flow infrasound signal front end post circuit, bag
Include：
Noise reduction and frequency-selecting module, for obtaining voice signal, and the voice signal is carried out noise reduction and
Frequency-selecting is processed, and obtains infrasound signals；
Comparison module, for the infrasound signals and predetermined threshold value to be compared；
Microprocessor, the output signal for gathering comparison module, and generated according to the output signal
Control signal, the control signal is used to control the working condition of debris flow infrasound monitoring device.
The debris flow infrasound signal front end post circuit that the present invention is provided, can reduce debris flow infrasound letter
Number noise, increase debris flow infrasound signal transacting real-time, reduce Surveillance center treatment data
Amount, effectively reduces system power dissipation.
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 right
The accompanying drawing to be used needed for embodiment or description of the prior art is briefly described, it should be apparent that,
Drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art
For, on the premise of not paying creative work, can also obtain other attached according to these accompanying drawings
Figure.
Debris flow infrasound signal a kind of knot of embodiment of front end post circuit that Fig. 1 is provided for the present invention
Structure schematic diagram.
Debris flow infrasound signal front end post second embodiment of circuit that Fig. 2 is provided for the present invention
Structural representation.
Specific embodiment
Illustrate embodiments of the invention with reference to the accompanying drawings.In an accompanying drawing of the invention or a kind of real
The element and feature applied described in mode can be with one or more other accompanying drawings or implementation methods
In the element that shows and feature be combined.It should be noted that in order to understand purpose, being saved in accompanying drawing and explanation
The expression of part unrelated to the invention, known to persons of ordinary skill in the art and treatment is omited and has retouched
State.
With reference to Fig. 1, the present embodiment provides a kind of debris flow infrasound signal front end post circuit, including：
Noise reduction and frequency-selecting module 101, for obtaining voice signal, and drop to the voice signal
Make an uproar and frequency-selecting treatment, obtain infrasound signals；
Comparison module 102, for the infrasound signals and predetermined threshold value to be compared；
Microprocessor 103, the output signal for gathering comparison module, and according to the output signal
Generation control signal, the control signal is used to control the working condition of debris flow infrasound monitoring device.
Specifically, the voice signal that noise reduction and frequency-selecting module are used to collect carries out noise reduction, and extracts
The infrasound signals of special frequency channel.Infrasound signals are the voice signal less than 20Hz.
Specifically, with reference to Fig. 2, the debris flow infrasound signal front end post circuit that the present embodiment is provided is also
Including the potentiometer module being connected with microprocessor 103, for adjusting the predetermined threshold value.
Further, comparison module includes voltage comparator U1, the first power vd D1, the second electricity
Source VDD2, reference power supply VREF, first resistor R1, second resistance R2,3rd resistor R3,
4th resistance R4 and diode V1, voltage comparator U1 and the electricity of the first power vd D1 and second
Source VDD2 is connected, and the first input end 2 of voltage comparator U1 is connected with first resistor R1, is used
In the infrasound signals for obtaining mud-rock flow, second input 3 and second resistance of voltage comparator U1
R2 is connected, and one end of 3rd resistor R3 is connected with reference power supply VREF, the other end and second electric
Resistance R2 connections, one end of the 4th resistance R4 is connected with the second input, the other end and voltage ratio compared with
The output end connection of device, the output end 3 of voltage comparator U2 is connected with diode V1, and with it is micro-
Processor 103 is connected.
The output end 1 of voltage comparator U1 is also associated with the first electric capacity C1, for voltage ratio compared with
The output signal of device is filtered.
Further, potentiometer module includes potentiometer U2, the 3rd power vd D3, the 5th resistance
R5, the 6th resistance R6, the 7th resistance R7 and the second electric capacity C2, first pipe of potentiometer U2
Pin is connected with the 3rd power vd D3, second pin of potentiometer U2 ground connection, and the of potentiometer U2
Three-prong and the 4th pin be connected with the 5th resistance R5 and the 6th resistance R6 respectively after with the 3rd power supply
VDD3 is connected, and the 5th pin of potentiometer U2 is connected with 3rd resistor R3, and the 6th of potentiometer the
Pin is grounded, and one end of the second electric capacity C2 is connected with the 3rd power vd D3, other end ground connection.
Wherein, the 5th resistance, the 6th resistance are pull-up resistor, first resistor, second resistance, the 3rd
Resistance, the 4th resistance, the 7th resistance are that temperature drift is small, resistance of the precision not less than 0.1%.
Further, the operation principle of the debris flow infrasound signal front end post circuit that the present embodiment is provided
It is as follows：
The port for first passing through microcontroller sets the resistance value of potentiometer, the second of adjustment voltage comparator
The voltage of input is predetermined threshold value, when the voltage that the first input end of voltage comparator is input into is low
When predetermined threshold value, the voltage of the output end output of voltage comparator should be all high level, by two poles
Pipe produces tube voltage drop, and the signal for now being monitored by micro processor leg is always high level, is represented
The signal amplitude of collection is respectively less than predetermined threshold value, and debris flow infrasound monitoring device is in a dormant state.
When the voltage of the signal that the first input end of voltage comparator is input into is more than predetermined threshold value, voltage
The output end output signal of comparator should be PWM ripples, and positive voltage is VDD1, and negative voltage is
VDD2, then tube voltage drop V0 can be produced by diode, now, the voltage more than V0 passes through, small
In the voltage cut-off of V0, the signal voltage to microprocessor is always PWM ripples, represents collection
Infrasound signals are more than or equal to predetermined threshold value, and debris flow infrasound monitoring device is in running order.
The debris flow infrasound signal front end post circuit that the present invention is provided, can increase debris flow infrasound letter
Number treatment real-time, effectively reduce system power consumption, it is to avoid unnecessary device loss, extend
In the life-span of equipment, the data volume of Surveillance center's treatment is reduced, reduce communication service expense.
Although the present invention and its advantage has been described in detail it should be appreciated that without departing from by appended
The spirit and scope of the present invention that are limited of claim in the case of can carry out various changes, replace
Generation and conversion.And, scope of the present application is not limited only to process, equipment, hand described by specification
Section, the specific embodiment of method and steps.One of ordinary skilled in the art is from disclosure of the invention
Content will readily appreciate that, can be basic to corresponding embodiment described herein using performing according to the present invention
Identical function obtains result, the existing and in the future to be developed mistake essentially identical with it
Journey, equipment, means, method or step.Therefore, appended claim is intended to their scope
It is interior including such process, equipment, means, method or step.
Claims (5)
1. a kind of debris flow infrasound signal front end post circuit, it is characterised in that including：
Noise reduction and frequency-selecting module, for obtaining voice signal, and the voice signal is carried out noise reduction and
Frequency-selecting is processed, and obtains infrasound signals；
Comparison module, for the infrasound signals and predetermined threshold value to be compared；
Microprocessor, the output signal for gathering comparison module, and generated according to the output signal
Control signal, the control signal is used to control the working condition of debris flow infrasound monitoring device.
2. post circuit in debris flow infrasound signal front end according to claim 1, its feature exists
In when the microprocessor receives high level, generating for controlling the debris flow infrasound to monitor
First control signal of device sleeps, when the microprocessor receives PWM ripples, generating is used for
Control the second control signal of the debris flow infrasound monitoring device work.
3. post circuit in debris flow infrasound signal front end according to claim 1, its feature exists
In the front end post circuit also includes the potentiometer module being connected with the microprocessor, for adjusting
The whole predetermined threshold value.
4. post circuit in debris flow infrasound signal front end according to claim 3.Its feature exists
Include voltage comparator, the first power supply, second source, reference power supply, the in, the comparison module
One resistance, second resistance, 3rd resistor, the 4th resistance and diode, the voltage comparator with
First power supply and second source are connected, the first input end of the voltage comparator and described first
Resistance connect, the infrasound signals for obtaining mud-rock flow, the second input of voltage comparator with it is described
Second resistance is connected, and one end of the 3rd resistor is connected with the reference power supply, the other end with it is described
Second resistance is connected, and one end of the 4th resistance is connected with second input, the other end and institute
The output end connection of voltage comparator is stated, the output end of the voltage comparator is connected with diode, and
It is connected with the microprocessor.
5. post circuit in debris flow infrasound signal front end according to claim 4.Its feature exists
In the potentiometer module includes potentiometer, the 3rd power supply, the 5th resistance, the 6th resistance, the 7th
Resistance and the second electric capacity, the first pin of the potentiometer are connected with the 3rd power supply, the electricity
The second pin ground connection of position device, the three-prong and the 4th pin of the potentiometer are respectively with the described 5th
It is connected with the 3rd power supply after resistance and the connection of the 6th resistance, the 5th pin of the potentiometer and institute
State 3rd resistor connection, the 6th pin ground connection of the potentiometer, one end of second electric capacity and institute
State the connection of the 3rd power supply, other end ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510938740.4A CN106886174B (en) | 2015-12-15 | 2015-12-15 | Debris flow infrasound signal front end post circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510938740.4A CN106886174B (en) | 2015-12-15 | 2015-12-15 | Debris flow infrasound signal front end post circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106886174A true CN106886174A (en) | 2017-06-23 |
| CN106886174B CN106886174B (en) | 2019-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510938740.4A Active CN106886174B (en) | 2015-12-15 | 2015-12-15 | Debris flow infrasound signal front end post circuit |
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| CN (1) | CN106886174B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110910612A (en) * | 2019-11-24 | 2020-03-24 | 中国科学院、水利部成都山地灾害与环境研究所 | Method for monitoring torrential flood and debris flow disasters in debris flow channel |
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|---|---|---|---|---|
| US6230078B1 (en) * | 1996-01-18 | 2001-05-08 | John D. Ruff | Simplified animatronic and CNC system |
| WO2008032225A2 (en) * | 2006-03-21 | 2008-03-20 | Ranco Incorporated Of Delaware | Refrigeration monitor unit |
| CN101835178A (en) * | 2010-03-30 | 2010-09-15 | 北京必创科技有限公司 | Method for realizing remote wireless monitoring and wireless monitoring device |
| CN103778345A (en) * | 2014-02-17 | 2014-05-07 | 中国科学院、水利部成都山地灾害与环境研究所 | Debris flow infrasound signal screening method, generation positioning method and path monitoring method |
| CN203894911U (en) * | 2014-04-22 | 2014-10-22 | 中国地质大学（北京） | Mud-rock flow infrasound monitoring alarm device |
| CN203965641U (en) * | 2014-04-23 | 2014-11-26 | 中国科学院、水利部成都山地灾害与环境研究所 | A kind of infrasound signals harvester and system |
-
2015
- 2015-12-15 CN CN201510938740.4A patent/CN106886174B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6230078B1 (en) * | 1996-01-18 | 2001-05-08 | John D. Ruff | Simplified animatronic and CNC system |
| WO2008032225A2 (en) * | 2006-03-21 | 2008-03-20 | Ranco Incorporated Of Delaware | Refrigeration monitor unit |
| CN101835178A (en) * | 2010-03-30 | 2010-09-15 | 北京必创科技有限公司 | Method for realizing remote wireless monitoring and wireless monitoring device |
| CN103778345A (en) * | 2014-02-17 | 2014-05-07 | 中国科学院、水利部成都山地灾害与环境研究所 | Debris flow infrasound signal screening method, generation positioning method and path monitoring method |
| CN203894911U (en) * | 2014-04-22 | 2014-10-22 | 中国地质大学（北京） | Mud-rock flow infrasound monitoring alarm device |
| CN203965641U (en) * | 2014-04-23 | 2014-11-26 | 中国科学院、水利部成都山地灾害与环境研究所 | A kind of infrasound signals harvester and system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110910612A (en) * | 2019-11-24 | 2020-03-24 | 中国科学院、水利部成都山地灾害与环境研究所 | Method for monitoring torrential flood and debris flow disasters in debris flow channel |
| CN110910612B (en) * | 2019-11-24 | 2021-09-28 | 中国科学院、水利部成都山地灾害与环境研究所 | Method for monitoring torrential flood and debris flow disasters in debris flow channel |
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| Publication number | Publication date |
|---|---|
| CN106886174B (en) | 2019-03-29 |
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