CN106886174B - Debris flow infrasound signal front end post circuit - Google Patents
Debris flow infrasound signal front end post circuit Download PDFInfo
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- CN106886174B CN106886174B CN201510938740.4A CN201510938740A CN106886174B CN 106886174 B CN106886174 B CN 106886174B CN 201510938740 A CN201510938740 A CN 201510938740A CN 106886174 B CN106886174 B CN 106886174B
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- infrasound
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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
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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
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24024—Safety, surveillance
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Alarm Systems (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The present invention provides a kind of debris flow infrasound signal front end post circuit, comprising: noise reduction and frequency-selecting module carry out noise reduction and frequency-selecting processing for obtaining voice signal, and to the voice signal, obtain infrasound signals；Comparison module, for being compared the infrasound signals with preset threshold；Microprocessor generates control signal for acquiring the output signal of comparison module, and according to the output signal, and 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 processing, reduces the data volume of monitoring center processing, system power dissipation is effectively reduced.
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 post circuits.
Background technique
Mud-rock flow is being formed in motion process, and lithosphere can generate stable in the air during collision and extruding
It propagates and frequency content is compared with the infrasound of concentration, the infrasound is remote with propagation distance, penetration power is strong, is not easy the spy of decaying
Point is widely used in mud-stone flow disaster monitoring.For this purpose, domestic expert has made intensive studies, the patent of invention of Shi Zhe et al.
In " system for monitoring, forecasting and warning mud-rock flow " by infrasonic monitoring technical application into mud-stone flow disaster forecasting and warning.The hair of Wei Fangqiang
Bright patent " localization method, path monitoring method occur for debris flow infrasound signal screening method " proposes a kind of debris flow infrasound
The infrasonic sound data of acquisition are sent to monitoring center, monitoring center docking by signal screening method, i.e. infrasound sensor primitive in real time
The data of receipts are analyzed, are handled and early warning.The debris flow infrasound alarm that Chengdu lattice cause is by obtaining field real-time acquisition
Infrasound information is sent to monitoring center and is analyzed and processed to realize early warning.
Application of the above infrasonic sound in mud-rock flow monitoring is taken a broad view of, acquisition infrasound signals in real time are generallyd use and analyzes processing
Method, this method devote a tremendous amount of time acquisition process background noise, and not only real-time cannot be guaranteed, but also considerably increase
The power consumption of system, meanwhile, it also will increase the data processing amount and communication increment expense of monitoring center.
Summary of the invention
Brief summary of the present invention is given below, in order to provide the basic reason about certain aspects of the invention
Solution.It should be appreciated that this summary is not an exhaustive overview of the invention.It is not intended to determine key of the invention
Or pith, nor is it intended to limit the scope of the present invention.Its purpose only provides certain concepts in simplified form, with
This is as the preamble in greater detail discussed later.
To solve the above problems, the present invention proposes a kind of debris flow infrasound signal front end post circuit, comprising:
Noise reduction and frequency-selecting module carry out noise reduction and frequency-selecting processing for obtaining voice signal, and to the voice signal, obtain
Obtain infrasound signals；
Comparison module, for being compared the infrasound signals with preset threshold；
Microprocessor generates control signal, institute for acquiring the output signal of comparison module, and according to the output signal
State the working condition that control signal is used to control debris flow infrasound monitoring device.
Debris flow infrasound signal provided by the invention front end post circuit, can reduce the noise of debris flow infrasound signal,
Increase the real-time of debris flow infrasound signal processing, reduces the data volume of monitoring center processing, system power dissipation is effectively reduced.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of embodiment of debris flow infrasound signal provided by the invention front end post circuit.
Fig. 2 is the structural schematic diagram of debris flow infrasound signal provided by the invention front end post second of embodiment of circuit.
Specific embodiment
Embodiments of the present invention will be described below with reference to the accompanying drawings.It is retouched in an attached drawing of the invention or a kind of embodiment
The elements and features stated can be combined with elements and features illustrated in one or more other drawings or embodiments.
It should be noted that in order to understand purpose, being omitted known to unrelated to the invention, those of ordinary skill in the art in attached drawing and explanation
Component and processing expression and description.
With reference to Fig. 1, the present embodiment provides a kind of debris flow infrasound signal front end post circuits, comprising:
Noise reduction and frequency-selecting module 101 carry out at noise reduction and frequency-selecting for obtaining voice signal, and to the voice signal
Reason obtains infrasound signals；
Comparison module 102, for being compared the infrasound signals with preset threshold；
Microprocessor 103 generates control letter for acquiring the output signal of comparison module, and according to the output signal
Number, the control signal is used to control the working condition of debris flow infrasound monitoring device.
Specifically, noise reduction and frequency-selecting module are used to collected voice signal carrying out noise reduction, and extract special frequency channel
Infrasound signals.Infrasound signals are the voice signal lower than 20Hz.
Specifically, with reference to Fig. 2, debris flow infrasound signal provided in this embodiment front end post circuit further includes and micro process
The potentiometer module that device 103 connects, for adjusting the preset threshold.
Further, comparison module includes voltage comparator U1, the first power vd D1, second source VDD2, reference power supply
VREF, first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4 and diode V1, voltage comparator U1 and
One power vd D1 is connected with second source VDD2, and the first input end 2 of voltage comparator U1 is connect with first resistor R1, for obtaining
The infrasound signals of mud-rock flow are taken, the second input terminal 3 of voltage comparator U1 is connect with second resistance R2, one end of 3rd resistor R3
It is connect with reference power supply VREF, the other end is connect with second resistance R2, and one end of the 4th resistance R4 is connect with the second input terminal, separately
The connection of the output end of one end and voltage comparator, the output end 3 of voltage comparator U2 are connected with diode V1, and and microprocessor
103 connections.
The output end 1 of voltage comparator U1 is also connected with first capacitor C1, for the output signal to voltage comparator into
Row filtering.The front end post circuit further includes the 8th resistance R8, the output end 1 of the voltage comparator U1 also with the 8th resistance
One end of R8 connects, and the other end of the 8th resistance R8 is connect with the first power vd D1
Further, potentiometer module includes potentiometer U2, third power vd D3, the 5th resistance R5, the 6th resistance R6,
The first pin of seven resistance R7 and the second capacitor C2, potentiometer U2 are connect with third power vd D3, the second pipe of potentiometer U2
Foot ground connection, the third pin and the 4th pin of potentiometer U2 are electric with third after connecting respectively with the 5th resistance R5 and the 6th resistance R6
5th pin of source VDD3 connection, potentiometer U2 is connect with 3rd resistor R3, the 6th pin ground connection of potentiometer, the second capacitor C2
One end connect with third power vd D3, the other end ground connection；The 7th resistance R7 is connect with the potentiometer U2.
Wherein, the 5th resistance, the 6th resistance be pull-up resistor, first resistor, second resistance, 3rd resistor, the 4th resistance,
7th resistance is that temperature drift is small, and precision is not less than 0.1% resistance.
Further, the working principle of debris flow infrasound signal provided in this embodiment front end post circuit is as follows:
The resistance value for first passing through the port setting potentiometer of microcontroller, adjusts the electricity of the second input terminal of voltage comparator
Pressure is preset threshold, when the voltage that the first input end of voltage comparator inputs is below preset threshold, voltage comparator
The voltage of output end output should be all high level, generate tube voltage drop by diode, monitored at this time by micro processor leg
Signal be always high level, indicate that the signal amplitude of acquisition is respectively less than preset threshold, debris flow infrasound monitoring device, which is in, stops
Dormancy state.
When voltage comparator first input end input signal voltage be greater than preset threshold when, voltage comparator it is defeated
Outlet output signal should be PWM wave, positive voltage VDD1, negative voltage VDD2, then can generate tube voltage drop V0 by diode, this
When, the voltage greater than V0 passes through, the voltage cut-off less than V0, until the signal voltage of microprocessor is PWM wave always, indicates acquisition
Infrasound signals be greater than or equal to preset threshold, debris flow infrasound monitoring device is in running order.
Debris flow infrasound signal provided by the invention front end post circuit, can increase the reality of debris flow infrasound signal processing
The power consumption of system is effectively reduced in Shi Xing, avoids unnecessary device loss, extends the service life of equipment, reduces monitoring center
The data volume of processing reduces communication service expense.
Although the present invention and its advantage has been described in detail it should be appreciated that without departing from by the attached claims
Defined by can carry out various changes, substitution and transformation in the case where the spirit and scope of the present invention.Moreover, the model of the application
Enclose the specific embodiment for being not limited only to process, equipment described in specification, means, method and steps.In the art is common
Technical staff is from the disclosure it will be readily understood that execution and corresponding reality described herein can be used according to the present invention
Apply the essentially identical function of example or process that obtain the result essentially identical with it, that existing and future is to be developed, equipment,
Means, method or step.Therefore, the attached claims purport includes such process, equipment, hand in the range of them
Section, method or step.
Claims (4)
1. a kind of debris flow infrasound signal front end post circuit characterized by comprising
Noise reduction and frequency-selecting module carry out noise reduction and frequency-selecting processing for obtaining voice signal, and to the voice signal, obtain secondary
Acoustical signal；
Comparison module, for being compared the infrasound signals with preset threshold；
Microprocessor generates control signal, the control for acquiring the output signal of comparison module, and according to the output signal
Signal processed is used to control the working condition of debris flow infrasound monitoring device；
Wherein, the comparison module includes voltage comparator, the first power supply, second source, reference power supply, first resistor, second
Resistance, 3rd resistor, the 4th resistance and diode, the voltage comparator are connect with first power supply and second source,
The first input end of the voltage comparator is connect with the first resistor, for obtaining the infrasound signals of mud-rock flow, voltage ratio
The second input terminal compared with device is connect with the second resistance, and one end of the 3rd resistor is connect with the reference power supply, another
End is connect with the second resistance, and one end of the 4th resistance is connect with second input terminal, the other end and the voltage
The output end of comparator connects, and the output end of the voltage comparator is connected with diode, and connect with the microprocessor.
2. debris flow infrasound signal according to claim 1 front end post circuit, which is characterized in that when the microprocessor
When receiving high level, the first control signal for controlling the debris flow infrasound monitoring device suspend mode is generated, when described micro-
When processor receives PWM wave, the second control signal for controlling the debris flow infrasound monitoring device work is generated.
3. debris flow infrasound signal according to claim 1 front end post circuit, which is characterized in that the front end post electricity
Road further includes the potentiometer module connecting with the microprocessor, for adjusting the preset threshold.
4. debris flow infrasound signal according to claim 1 front end post circuit, which is characterized in that the potentiometer module
Including potentiometer, third power supply, the 5th resistance, the 6th resistance, the 7th resistance and the second capacitor, the first pipe of the potentiometer
Foot is connect with the third power supply, the second pin ground connection of the potentiometer, the third pin and the 4th pin of the potentiometer
It is connect after being connect respectively with the 5th resistance and the 6th resistance with the third power supply, the 5th pin of the potentiometer and institute
3rd resistor connection, the 6th pin ground connection of the potentiometer are stated, one end of second capacitor is connect with the third power supply,
Other end ground connection；7th resistance is connect with the potentiometer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510938740.4A CN106886174B (en) | 2015-12-15 | 2015-12-15 | Debris flow infrasound signal front end post circuit |
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| 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 |
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| CN106886174A CN106886174A (en) | 2017-06-23 |
| CN106886174B true CN106886174B (en) | 2019-03-29 |
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| CN201510938740.4A Active CN106886174B (en) | 2015-12-15 | 2015-12-15 | Debris flow infrasound signal front end post circuit |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN115389003B (en) * | 2022-07-05 | 2024-06-25 | 中铁第一勘察设计院集团有限公司 | Mud-rock flow vibration detection circuit, detection method and detection equipment |
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| US6230078B1 (en) * | 1996-01-18 | 2001-05-08 | John D. Ruff | Simplified animatronic and CNC system |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008032225A2 (en) * | 2006-03-21 | 2008-03-20 | Ranco Incorporated Of Delaware | Refrigeration monitor unit |
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2015
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6230078B1 (en) * | 1996-01-18 | 2001-05-08 | John D. Ruff | Simplified animatronic and CNC system |
| 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 |
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| CN106886174A (en) | 2017-06-23 |
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