CN109752134A - A kind of detection method and device of gas pressure - Google Patents
A kind of detection method and device of gas pressure Download PDFInfo
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- CN109752134A CN109752134A CN201810300945.3A CN201810300945A CN109752134A CN 109752134 A CN109752134 A CN 109752134A CN 201810300945 A CN201810300945 A CN 201810300945A CN 109752134 A CN109752134 A CN 109752134A
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Abstract
The embodiment of the present application discloses a kind of detection method and device of gas pressure, this method comprises: the electric signal that available condenser type air pressure perception device generates, the electric signal characterizes the gas pressure intensity of detected gas, then according to the electric signal, it can determine the first voltage value, the first voltage value is the peak value of electric signal, then according to the corresponding relationship of the voltage value and gas pressure intensity value that pre-establish, it can determine the corresponding gas pressure intensity value of the first voltage value, also the as gas pressure intensity value of detected gas.As it can be seen that since the volume of condenser type air pressure perception device is usually smaller, and the condenser type air pressure perception device can integrate the terminal device being commonly used in user, and user is convenient for carrying, so as to improve the usage experience of user.
Description
Technical field
This application involves gas pressure detection fields, and in particular to a kind of method and device of gas pressure detection.
Background technique
In actual life, there may be the demand detected to the intensity of the gas pressure under certain environment, for example,
In some scenarios, it may be necessary to detect whether gas pressure is exceeded, and gas pressure is exceeded and brings safety hidden to prevent
Suffer from.
In the scheme of existing detection gas pressure, in order to guarantee the accuracy of gas pressure detection, Duo Shuoshi as far as possible
Gas pressure is detected using mechanical equipment, and under normal conditions, the volume of mechanical equipment is larger, and user is not easy to take
Band.
Summary of the invention
In view of this, the embodiment of the present application provides a kind of method and device of gas pressure detection, to solve the prior art
In cause user easy to carry since the volume of mechanical equipment is larger technical problem.
To solve the above problems, technical solution provided by the embodiments of the present application is as follows:
In a first aspect, the embodiment of the present application provides a kind of detection method of gas pressure, this method comprises:
The electric signal that condenser type air pressure perception device generates is obtained, the electric signal characterizes the gas pressure of detected gas
Power intensity；
According to the electric signal, determine that the first voltage value, the first voltage value are the peak value in the electric signal；
According to the corresponding relationship of the voltage value and gas pressure intensity value that pre-establish, determine and the first voltage value
Corresponding gas pressure intensity value.
In some possible embodiments, the condenser type air pressure perception device includes Electret Condencer Microphone.
In some possible embodiments, it is described according to the electric signal, determine the first voltage value, comprising:
Determine the electric signal at the first moment, first moment be detect the electric signal there are at the time of；
Using the corresponding voltage value of electric signal at first moment as the first voltage value.
In some possible embodiments, this method further include:
Before calculating the first voltage value, processing is amplified to the electric signal, obtains amplified electric signal；
Then, according to the electric signal, calculating the first voltage value includes:
According to the amplified electric signal, the first voltage value is calculated.
In some possible embodiments, this method further include:
Before obtaining the electric signal that condenser type air pressure perception device generates, the condenser type air pressure perception device is calibrated.
In some possible embodiments, the pre-set voltage value is corresponding with gas pressure intensity value closes
System, is pre- first pass through obtained from measurement voltage value corresponding with known gas intensity of pressure value.
Second aspect, the embodiment of the present application also provides a kind of detection device of gas pressure, which includes:
Module is obtained, for obtaining the electric signal of condenser type air pressure perception device generation, the electric signal characterizes tested
Survey the gas pressure intensity of gas；
First determining module, for according to the electric signal, determining that the first voltage value, the first voltage value are described
Peak value in electric signal；
Second determining module is determined for the corresponding relationship according to the voltage value and gas pressure intensity value that pre-establish
Gas pressure intensity value corresponding with the first voltage value out.
In some possible embodiments, which includes Electret Condencer Microphone.
In some possible embodiments, which includes:
First determination unit, for determining the electric signal at the first moment, first moment is to detect the telecommunications
Number there are at the time of；
Second determination unit, for using the corresponding voltage value of electric signal at first moment as the first voltage
Value.
In some possible embodiments, the device further include:
Amplification module, for amplifying processing to the electric signal, being amplified before calculating the first voltage value
Electric signal afterwards；
Then, first determining module is specifically used for calculating the first voltage value according to the amplified electric signal.
In some possible embodiments, the device further include:
Calibration module, for calibrating the condenser type before obtaining the electric signal that condenser type air pressure perception device generates
Air pressure perception device.
In some possible embodiments, the pre-set voltage value is corresponding with gas pressure intensity value closes
System, is pre- first pass through obtained from measurement voltage value corresponding with known gas intensity of pressure value.
It can be seen that the embodiment of the present application has the following beneficial effects:
In the embodiment of the present application, when needing to carry out the detection of gas pressure intensity to detected gas, available electricity
The electric signal that appearance formula air pressure perception device generates, the electric signal characterize the gas pressure intensity of detected gas, then basis
The electric signal can determine the first voltage value, which is the peak value of electric signal, then according to the electricity pre-established
The corresponding relationship of pressure value and gas pressure intensity value can determine the corresponding gas pressure intensity value of the first voltage value,
The as gas pressure intensity value of detected gas.As it can be seen that using condenser type air pressure perception device come to detected gas into
When the detection of the promoting the circulation of qi body intensity of pressure, since the volume of condenser type air pressure perception device is usually smaller, and the condenser type air pressure
Perception device can integrate the terminal device being commonly used in user, carry convenient for user, so as to improve the use of user
Experience.Meanwhile using this electronic device of condenser type air pressure perception device come the detection gas intensity of pressure, on the one hand, electronics device
The consistency of part is relatively high, and on the other hand, electronic device is not easy to occur material aging, dampness is got rusty and poor contact etc.
Problem, service life usually can be longer than mechanical equipment.
Detailed description of the invention
In order to more clearly explain the technical solutions in the embodiments of the present application, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are only some examples of the present application, for
For those of ordinary skill in the art, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is a kind of schematic diagram of exemplary application scene provided by the embodiments of the present application；
Fig. 2 is a kind of exemplary structure schematic diagram of condenser type air pressure perception device；
Fig. 3 is a kind of illustrative schematic diagram of condenser type air pressure perception device output signal；
Fig. 4 is a kind of flow diagram of the detection method of gas pressure provided by the embodiments of the present application；
Fig. 5 is the flow diagram of the detection method of another gas pressure provided by the embodiments of the present application；
Fig. 6 is the flow diagram of the detection method of another gas pressure provided by the embodiments of the present application；
Fig. 7 is a kind of configuration diagram of the detection device of gas pressure provided by the embodiments of the present application.
Specific embodiment
In detection gas pressure, the prior art mainly uses mechanical equipment to be detected.In a kind of wherein scheme,
It is to be detected using mechanical cavity to gas pressure, principle is to be worked as using the movement of scale on mechanical equipment to react
The intensity of pressure of preceding detected gas.Specifically, moveable scale and corresponding scale label are provided on the mechanical equipment,
The scale label corresponds to a certain size gas pressure intensity, when mechanical equipment detects gas pressure intensity, mark
Ruler is moved to corresponding position, reads the scale label at the position, and the intensity of pressure value of current detected gas can be obtained.
It is to be detected using mechanical film to gas pressure in another scheme wherein, principle is benefit
The pressure of current detected gas is reacted in the variation of the capacitor caused by the movement of movable contact spring on mechanical equipment or resistance
Intensity.Specifically, moveable movable contact spring is provided on the mechanical equipment, when the mechanical equipment examines gas pressure intensity
When survey, movable contact spring is moved to corresponding position, and the movement of movable contact spring will lead to movable contact spring capacitor or electricity in circuit
Resistance changes, and current detected gas can be obtained by certain data processing according to capacitor or the changing value of resistance
Intensity of pressure value.
In the scheme of above two detection gas pressure, mechanical equipment has been all made of to be detected, and in practical application,
The volume of mechanical equipment is usually larger, is not easy to user's carrying, affects the usage experience of user.In addition, mechanical equipment is usual
There can be material aging, make moist and get rusty, be easy the problems such as poor contact, these problems can seriously affect the mechanical equipment for gas
The accuracy of body pressure detecting, also, it is difficult just the same, different mechanical equipments pair in view of the hardware of different mechanical equipments composition
When same gas carries out pressure detecting, obtained gas pressure intensity value may have difference to a certain extent, machine
The consistency of tool equipment is not high.
In order to solve the above-mentioned technical problem, this application provides a kind of detection methods of gas pressure, utilize condenser type gas
Perception device is pressed to detect gas pressure.Specifically, Fig. 1 is shown one in the embodiment of the present application also referring to Fig. 1
The exemplary application scene of kind gas pressure detection, in this scenario, electricity of the user using configuration on terminal (such as mobile phone)
Appearance formula air pressure perception device detects gas pressure, when user 101 wants to carry out gas pressure inspection to detected gas
When survey, terminal 102 can be placed in detected gas by user 101, and execute starting detection gas pressure to terminal 102
Trigger action；The trigger action that terminal 102 is executed in response to user 101 utilizes the condenser type air pressure sense of configuration on the terminal 102
Know that device obtains electric signal, which characterizes detected gas (i.e. condenser type air pressure perception device perceived gas)
Gas pressure intensity determine the first voltage value then according to the electric signal of acquisition, and according to the voltage value pre-established with
The corresponding relationship of gas pressure intensity value determines gas pressure intensity value corresponding with the first voltage value, is also tested
The gas pressure intensity value for surveying gas, is finally presented to use on the display screen of terminal 102 for obtained gas pressure intensity value
Family 101.As it can be seen that in the detection using condenser type air pressure perception device to carry out gas pressure intensity to detected gas, by
It is usually smaller in the volume of condenser type air pressure perception device, and can also configure on the terminal 102, facilitate taking for user
Band, so as to improve the usage experience of user.Meanwhile gas is detected using this electronic device of condenser type air pressure perception device
The body intensity of pressure, on the one hand, the consistency of electronic device is relatively high, and on the other hand, electronic device is not easy material occur old
Change, dampness is got rusty and the problems such as poor contact, service life usually can be longer than mechanical equipment.
It should be noted that above-mentioned scene is only used as exemplary illustration, it is not used to limit the various of the embodiment of the present application
Embodiment.For example, condenser type air pressure perception device can also be not integrated into the terminal that user uses, but examined as one
The part for surveying the equipment of gas pressure intensity forms device.
In order to make the above objects, features, and advantages of the present application more apparent, below in conjunction with attached drawing to this Shen
Please the various non-limiting implementations in embodiment illustrate.Obviously, described embodiment is the application one
Section Example, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall in the protection scope of this application.
It should be noted that condenser type air pressure perception device can perceive the big of the gas pressure intensity of detected gas
Small, when condenser type air pressure perception device is in detected gas, condenser type air pressure perception device can produce corresponding electricity
Signal, wherein the signal strength size of generated electric signal, it is related with the gas pressure intensity of detected gas.In order to just
In the technical solution for understanding the embodiment of the present application, the principle for generating electric signal to condenser type air pressure perception device first carries out detailed
It introduces.
Referring to Figure 2 together, Fig. 2 shows a kind of structure charts of illustrative condenser type air pressure perception device.As schemed
Show, which includes two pieces of metal polar plates of A, B, provides the battery of charge and for protecting circuit
Protective resistance R etc..
Wherein, pole plate A can also be referred to as vibrating membrane, and the thickness of pole plate A is smaller, can issue in the variation of gas pressure
Raw deformation, so that the distance between pole plate A and pole plate B change；Pole plate B can also be referred to as substrate, usually fixed,
And it can be coated with electret film on its surface, the charge inducing of certain electricity is carried on the electret film.In practical application,
Since perfluoroethylene-propylene can generate more charge, and it is influenced smaller by humidity, can usually use perfluoroethylene
Propylene is as electret film.
Under normal circumstances when (being also that condenser type air pressure perception device is not in detected gas), pole plate A and pole
The air pressure on the left of air pressure and pole plate A between plate B is in equilibrium state, so the distance between pole plate A and pole plate B usually will not
It changes, so that pole plate A and the capacitance of capacitor composed by pole plate B will not change.Since capacitance will not
Change, thus where the capacitor circuit (Fig. 2 shows circuit) in without generate electric current, therefore, protective resistance both ends
Voltage remain 0, without electric signal export.
But when condenser type air pressure perception device is in detected gas, since the air pressure on the left of pole plate A suddenly can
It changes, has broken the balance of the air pressure between the air pressure on the left of pole plate A and pole plate A, B, so that pole plate A and pole plate B
The capacitance of composed capacitor changes, so that capacitor is charged or put a little the circuit caused where the capacitor
In produce electric current, resistance both ends produce electric signal there are a certain size voltage value as a result,.
It is illustrated in a manner of the derivation of equation below:
Assuming that pole plate A and pole plate B original distance is d, relative area S, the quantity of electric charge entrained by capacitor is Q, then, should
The capacitance of capacitor is C=S/d, and the voltage value at capacitor both ends is U=Q/C, also the as voltage of battery.When condenser type air pressure
When perception device is in detected gas, it is assumed that the air pressure of detected gas is greater than the gas between original pole plate A and pole plate B
Pressure, then under the action of pressure difference, pole plate A can be mobile to pole plate B, so that the distance between pole plate A and pole plate B become d ', then
The capacitance of capacitor becomes C '=S/d ' after pole plate A is mobile, and the voltage value at capacitor both ends is U '=Q/C '.As it can be seen that due to pole plate A
The distance between pole plate B d ' is less than d, so C ' can be greater than C, can be less than U so as to cause the voltage value U ' at capacitor both ends.When return
When the voltage at capacitor both ends becomes smaller suddenly in road, battery can charge to capacitor, so that generating electric current in circuit, in turn
The both ends protective resistance R also just produce corresponding electric signal there are a certain size voltage value (U-U ').
It is appreciated that as battery constantly charges to capacitor, the voltage value at capacitor both ends can be gradually increased, until with electricity
When the voltage at pond both ends is identical, the charging process of capacitor terminates, then electric current becomes 0 again in circuit, the electricity at protective resistance both ends
Pressure is 0, and condenser type air pressure perception device no longer exports electric signal (electric signal exported in other words is 0).In the process, such as
Fruit detected gas pressure will not change, then the electric signal that condenser type air pressure perception device is exported is one and gradually becomes
0 continuous signal, in a kind of example, which can be as shown in Figure 3.
It should be noted that the structure of above-mentioned condenser type air pressure perception device is only used as exemplary illustration, it is not used to limit
Determine the embodiment of the present application.In fact, in the embodiment of the present application, condenser type air pressure perception device can also using other structures or
Including other circuit elements；The electric signal that condenser type air pressure perception device is exported is also possible to the variation of capacitor both end voltage and is produced
Raw electric signal, in this way, the corresponding voltage value of electric signal that condenser type air pressure perception device is exported will not usually gradually become
0。
A kind of process signal of the detection method of gas pressure provided by the embodiments of the present application is shown refering to Fig. 4, Fig. 4
Figure, this method can specifically include:
S401: obtaining the electric signal that condenser type air pressure perception device generates, and the electric signal characterizes detected gas
Gas pressure intensity.
In a kind of illustrative specific implementation, when needing the gas pressure intensity to detected gas to detect
When, condenser type air pressure perception device can be placed in the detected gas, using condenser type air pressure perception device obtain by
The electric signal that the detected gas is caused.The generation of the electric signal is related with the gas pressure intensity of detected gas, therefore,
The electric signal characterizes the gas pressure intensity of detected gas.In a scenario, the peak value of acquired electric signal is bigger,
The gas pressure intensity for characterizing detected gas is bigger.
In a kind of possible embodiment, condenser type air pressure perception device can be Electret Condencer Microphone.
S402: according to the electric signal of acquisition, determining the first voltage value, which is the peak value in electric signal.
In a kind of illustrative specific implementation, condenser type air pressure perception device is not carrying out detected gas
When detection, condenser type air pressure perception device does not export electric signal, and is starting to carry out detected gas sensing chamber, just exports
Electric signal, at this point it is possible to determine the electric signal at the first moment, first moment be detect the electric signal there are the moment,
It then can be by the corresponding voltage value of the electric signal at the moment, as the first voltage value.
In another illustrative specific implementation, condenser type air pressure perception device is to export electric signal always, only
It is exported electric signal is a steady state value (for example being 0), then when the electricity for detecting that condenser type air pressure perception device is exported
When signal mutates, voltage value corresponding to the electric signal by the moment, as the first voltage value.It is appreciated that when detection
After being changed suddenly to the electric signal in steady state value (as become larger or becoming smaller), the mutation of the electric signal can be determined
Be as caused by being detected to detected gas, then when can will test electric signal and changing suddenly, the moment
The corresponding voltage value of electric signal is as the first voltage value.
S403: it according to the corresponding relationship of pre-set voltage value and gas pressure intensity value, determines and first voltage
It is worth corresponding gas pressure intensity value.
Wherein, the corresponding relationship between voltage value and gas pressure intensity value can be and pre-establish and keep.?
In a kind of example, which can be taken multiple measurements to obtain in the lab by technical staff.Specifically, in laboratory
Or in other noiseless environment, technical staff can by the condenser type air pressure perception device of same size, be placed on it is multiple not
In the gas of same known gas intensity of pressure value, condenser type air pressure perception device institute in each gas is then measured and recorded
The peak value of obtained electric signal establishes each gas pressure intensity value and electric signal corresponding with the gas pressure intensity value
The corresponding relationship of peak value, and the corresponding relationship is saved.
It therefore,, can be according to the voltage value and gas pressure pre-established after obtaining the first voltage value in the present embodiment
The corresponding relationship of intensity value determines gas pressure intensity value corresponding with the first voltage value.When specific implementation, voltage value with
The corresponding relationship of gas pressure intensity value can be saved in the form of a table, then, can be at this when obtaining the first voltage value
The corresponding gas pressure intensity value of the first voltage value is inquired in table, also the as gas pressure intensity value of detected gas, from
And realize the detection to the gas pressure intensity of detected gas.
In the present embodiment, when needing to carry out the detection of gas pressure intensity to detected gas, condenser type can use
Air pressure perception device obtains electric signal, which characterizes the gas pressure intensity of detected gas, then according to the telecommunications
Number, it can determine the first voltage value, which is the peak value of electric signal, then according to the voltage value pre-established
With the corresponding relationship of gas pressure intensity value, it can determine the corresponding gas pressure intensity value of the first voltage value, also be
The gas pressure intensity value of detected gas.As it can be seen that coming to carry out gas pressure to detected gas in condenser type air pressure perception device
When the detection of power intensity, since the volume of condenser type air pressure perception device is usually smaller, and the condenser type air pressure perception device
It can also be integrated in the terminal (such as mobile phone, PAD, PDA) that user uses, carried convenient for user, so as to improve user's
Usage experience.Meanwhile using this electronic device of condenser type air pressure perception device come the detection gas intensity of pressure, on the one hand, electricity
The consistency of sub- device is relatively high, and on the other hand, electronic device is not easy material aging occur, makes moist and get rusty and contact not
The problems such as good, service life usually can be longer than mechanical equipment.
In above-described embodiment, it is the electric signal directly exported according to condenser type air pressure perception device, determines the telecommunications
Number peak value, and then obtain the gas pressure intensity value of detected gas.But in practical application, condenser type air pressure perception device
The electric signal exported is more faint, in some embodiments, can also be to condenser type air pressure sense in order to improve the precision of measurement
Know that the electric signal of element output amplifies, the gas pressure intensity based on the obtained detected gas of amplified electric signal
The accuracy that the detection of gas pressure intensity value is carried out to detected gas can be improved in value.Therefore, present invention also provides another
The embodiment of the detection method of kind gas pressure.
Please refer to fig. 5, the process that Fig. 5 shows the detection method of another gas pressure in the embodiment of the present application is shown
It is intended to, this method can specifically include:
S501: obtaining the electric signal of condenser type air pressure perception device output, and the electric signal characterizes detected gas
Gas pressure intensity.
In practical application, condenser type air pressure perception device can be Electret Condencer Microphone.
In the present embodiment, step S501 is similar with step S401 in a upper embodiment, can refer to understanding, no longer superfluous herein
It states.
S502: processing is amplified to the electric signal of acquisition, obtains amplified electric signal.
In some possible embodiments, can according to the needs of practical application, the electric signal that will acquire is according to certain
Ratio amplifies processing, for example, the electric signal that will acquire is amplified to original 2 times, 3 times etc., to obtain amplified electricity
Signal.
S503: according to amplified electric signal, determining the first voltage value, which is amplified electric signal
Peak value.
In the present embodiment, determines that the embodiment of the first voltage value is similar with step S402 in a upper embodiment, can join
Understand that specific implementation repeats no more according to the related place of a upper embodiment.Unlike, in the present embodiment, determined
The first voltage value be amplified electric signal peak value, to condenser type air pressure perception device output electric signal according to a certain percentage
After amplifying, obtained the first voltage value has also obtained the amplification of same ratio.
S504: it according to the corresponding relationship of the voltage value that pre-establishes and gas pressure intensity value, determines and first voltage
It is worth corresponding gas pressure intensity value.
It should be noted that a certain proportion of amplification has been obtained by the first voltage value in this present embodiment, therefore, pre-
When first establishing corresponding relationship of the voltage value with gas pressure intensity value, voltage value corresponding to each gas pressure intensity value is also
It has passed through the amplification of same ratio.Its specific implementation process and the corresponding relationship for establishing voltage value and gas pressure intensity value
Process, similar with the specific implementation in a upper embodiment, the related place description that can refer in an embodiment is understood,
This is repeated no more.
In the present embodiment, obtain condenser type air pressure perception device output electric signal after, can also to the electric signal into
Row enhanced processing is then based on amplified electric signal and obtains the gas pressure intensity value of detected gas.Electric signal is carried out
After enhanced processing, the granularity for detecting the gas pressure intensity value of detected gas is refined, to improve to detected gas
The measurement accuracy of body progress gas pressure intensity value.
In practical application, on the basis of the above embodiments, for the gas pressure of more accurate measurement detected gas
Power intensity value can also calibrate the condenser type air pressure perception device before detecting to detected gas.Therefore, the application
Additionally provide the detection method embodiment of another gas pressure.
Referring to Figure 6 together, the process that Fig. 6 shows the detection method of another gas pressure in the embodiment of the present application is shown
It is intended to, this method can specifically include:
S601: calibration capacitance formula air pressure perception device.
In a kind of possible embodiment, calibration capacitance formula air pressure perception device can be and perceive condenser type air pressure
The position of vibrating membrane in device is restored to initial position.Specifically, condenser type air pressure perception device is without gas pressure
When the detection of power intensity, the capacitance of capacitor is fixed, and is also the vibrating membrane (moveable pole plate in capacitor) of composition capacitor
Position will not change, and can preset the initial position of the vibrating membrane, then be based on the condenser type air pressure sense all
In the detection process for knowing the gas pressure intensity that device is carried out, the vibrating membrane in the condenser type air pressure perception device is before movement
It is all to be located at initial position.Wherein, in advance during establishing the corresponding relationship of voltage value and gas pressure intensity value, the electricity
Vibrating membrane in appearance formula air pressure perception device is before mobile also in initial position.In this way, by detection vibrating membrane with it is another
The distance between block pole plate (pole plate will not move), or the capacitance by detecting capacitor are assured that out and shake
Whether dynamic film is located at initial position, to realize the calibration to condenser type air pressure perception device.
It further, can also be by condenser type air pressure sense in order to examine the calibration effect of condenser type air pressure perception device
After knowing that the position of the vibrating membrane in device is restored to initial position, according to the voltage value and gas pressure intensity value pre-established
Corresponding relationship, whether the electric signal that detection condenser type air pressure perception device is exported is in accordance with expection.Specifically, first by condenser type gas
Vibrating membrane in pressure perception device is restored to initial position, it is then possible to will be placed in condenser type air pressure perception device known
In the gas of gas pressure intensity value, the peak value for the electric signal that measurement condenser type air pressure perception device is exported, and according to voltage
The corresponding relationship of value and gas pressure intensity value, determines the corresponding voltage value of known gas intensity of pressure value, then by the peak
Value is compared with the voltage value, when error in allowed limits when, it is determined that calibration capacitance formula air pressure perception device,
Otherwise, which is not implemented calibration.
It is appreciated that then recycling the condenser type gas after calibration by calibrating to condenser type air pressure perception device
It presses perception device to carry out the measurement of gas pressure intensity value to detected gas, measurement result can be made more accurate.
As an example, which can be Electret Condencer Microphone.
S602: the electric signal of the condenser type air pressure perception device output after obtaining calibration, the electric signal characterizes tested
Survey the gas pressure intensity of gas.
S603: processing is amplified to the electric signal of acquisition, obtains amplified electric signal.
S604: according to amplified electric signal, determining the first voltage value, which is amplified electric signal
Peak value.
S605: it according to the corresponding relationship of the voltage value that pre-establishes and gas pressure intensity value, determines and first voltage
It is worth corresponding gas pressure intensity value.
It should be noted that step S602 to step S605 and step S501 in a upper embodiment to step in the present embodiment
S504 is similar, can refer to understanding in place of correlation, details are not described herein.
In the present embodiment, in the detection for carrying out gas pressure intensity to detected gas using condenser type air pressure perception device
Before, also condenser type air pressure perception device is calibrated in advance, gas is carried out based on the condenser type air pressure perception device after calibration
The measurement of intensity of pressure value can make measurement result more accurate.
In addition, the embodiment of the present application also provides a kind of detection devices of gas pressure.Referring to Figure 7 together, Fig. 7 is shown
A kind of configuration diagram of the detection device of gas pressure in the embodiment of the present application, the device can specifically include:
Obtain module 701, for obtain condenser type air pressure perception device output electric signal, the electric signal characterize by
The gas pressure intensity of detection gas；
First determining module 702, for according to the electric signal, determining that the first voltage value, the first voltage value are
Peak value in the electric signal；
Second determining module 703, for the corresponding relationship according to the voltage value and gas pressure intensity value that pre-establish, really
Make gas pressure intensity value corresponding with the first voltage value.
In some possible embodiments, which may include Electret Condencer Microphone.
In some possible embodiments, which includes:
First determination unit, for determining the electric signal at the first moment, first moment is to detect the telecommunications
Number there are at the time of；
Second determination unit, for using the corresponding voltage value of electric signal at first moment as the first voltage
Value.
In some possible embodiments, the device further include:
Amplification module, for amplifying processing to the electric signal, being amplified before calculating the first voltage value
Electric signal afterwards；
Then, first determining module 701 is specifically used for calculating first voltage according to the amplified electric signal
Value.
In some possible embodiments, the device further include:
Calibration module, for calibrating the condenser type before the electric signal for obtaining the output of condenser type air pressure perception device
Air pressure perception device.
In some possible embodiments, the pre-set voltage value is corresponding with gas pressure intensity value closes
System, is pre- first pass through obtained from measurement voltage value corresponding with known gas intensity of pressure value.
In the present embodiment, when needing to carry out the detection of gas pressure intensity to detected gas, available condenser type
The electric signal of air pressure perception device output, which characterizes the gas pressure intensity of detected gas, then according to the electricity
Signal can determine the first voltage value, which is the peak value of electric signal, then according to the voltage pre-established
The corresponding relationship of value and gas pressure intensity value, can determine the corresponding gas pressure intensity value of the first voltage value, namely
For the gas pressure intensity value of detected gas.As it can be seen that coming to carry out gas to detected gas in condenser type air pressure perception device
When the detection of the intensity of pressure, since the volume of condenser type air pressure perception device is usually smaller, and the condenser type air pressure perceptron
Part can integrate the terminal used in user, carry convenient for user, so as to improve the usage experience of user.Meanwhile it using
This electronic device of condenser type air pressure perception device carrys out the detection gas intensity of pressure, on the one hand, the consistency of electronic device is opposite
It is higher, on the other hand, the problems such as electronic device is not easy to occur material aging, dampness is got rusty and poor contact, use the longevity
Life usually can be longer than mechanical equipment.
It should be noted that each embodiment in this specification is described in a progressive manner, each embodiment emphasis is said
Bright is the difference from other embodiments, and the same or similar parts in each embodiment may refer to each other.For reality
For applying system or device disclosed in example, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, phase
Place is closed referring to method part illustration.
It should also be noted that, herein, such as first or the like relational terms be used merely to an entity or
Person's operation is distinguished with another entity or operation, is appointed without necessarily requiring or implying existing between these entities or operation
What this actual relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or equipment for including a series of elements not only includes those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or equipment institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence " including ... ", it is not excluded that including described want
There is also other identical elements in the process, method, article or equipment of element.
The step of method described in conjunction with the examples disclosed in this document or algorithm, can directly be held with hardware, processor
The combination of capable software module or the two is implemented.Software module can be placed in random access memory (RAM), memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In any other form of storage medium well known in field.
The foregoing description of the disclosed embodiments makes professional and technical personnel in the field can be realized or use the application.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the application.Therefore, the application
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (12)
1. a kind of detection method of gas pressure, which is characterized in that the described method includes:
The electric signal of condenser type air pressure perception device output is obtained, the gas pressure that the electric signal characterizes detected gas is strong
Degree；
According to the electric signal, determine that the first voltage value, the first voltage value are the peak value in the electric signal；
According to the corresponding relationship of the voltage value and gas pressure intensity value that pre-establish, determine corresponding with the first voltage value
Gas pressure intensity value.
2. the method according to claim 1, wherein the condenser type air pressure perception device includes condenser type Mike
Wind.
3. the method according to claim 1, wherein described determine the first voltage value according to the electric signal,
Include:
Determine the electric signal at the first moment, first moment be detect the electric signal there are at the time of；
Using the corresponding voltage value of electric signal at first moment as the first voltage value.
4. the method according to claim 1, wherein the method also includes:
Before calculating the first voltage value, processing is amplified to the electric signal, obtains amplified electric signal；
Then, according to the electric signal, calculating the first voltage value includes:
According to the amplified electric signal, the first voltage value is calculated.
5. the method according to claim 1, wherein the method also includes:
Before the electric signal for obtaining the output of condenser type air pressure perception device, the condenser type air pressure perception device is calibrated.
6. the method according to claim 1, wherein the pre-set voltage value and gas pressure intensity value
Corresponding relationship, be pre- first pass through obtained from measurement voltage value corresponding with known gas intensity of pressure value.
7. a kind of detection device of gas pressure, which is characterized in that described device includes:
Module is obtained, for obtaining the electric signal of condenser type air pressure perception device output, the electric signal characterizes detected gas
The gas pressure intensity of body；
First determining module, for according to the electric signal, determining that the first voltage value, the first voltage value are the telecommunications
Peak value in number；
Second determining module, for the corresponding relationship according to the voltage value that pre-establishes and gas pressure intensity value, determine with
The corresponding gas pressure intensity value of the first voltage value.
8. device according to claim 7, which is characterized in that the condenser type air pressure perception device includes condenser type Mike
Wind.
9. device according to claim 7, which is characterized in that first determining module includes:
First determination unit, for determining the electric signal at the first moment, first moment is to detect that the electric signal is deposited
At the time of；
Second determination unit, for using the corresponding voltage value of electric signal at first moment as the first voltage value.
10. device according to claim 7, which is characterized in that described device further include:
Amplification module, for amplifying processing to the electric signal, obtaining amplified before calculating the first voltage value
Electric signal；
Then, first determining module is specifically used for calculating the first voltage value according to the amplified electric signal.
11. device according to claim 7, which is characterized in that described device further include:
Calibration module, for calibrating the condenser type air pressure before the electric signal for obtaining the output of condenser type air pressure perception device
Perception device.
12. device according to claim 7, which is characterized in that the pre-set voltage value and gas pressure intensity
The corresponding relationship of value is pre- first passes through obtained from measurement voltage value corresponding with known gas intensity of pressure value.
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| CN201810300945.3A CN109752134A (en) | 2018-04-04 | 2018-04-04 | A kind of detection method and device of gas pressure |
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Application publication date: 20190514 |