CN208888183U - A kind of sulfur hexafluoride gas detection device based on ultrasonic wave principle - Google Patents
A kind of sulfur hexafluoride gas detection device based on ultrasonic wave principle Download PDFInfo
- Publication number
- CN208888183U CN208888183U CN201821673485.0U CN201821673485U CN208888183U CN 208888183 U CN208888183 U CN 208888183U CN 201821673485 U CN201821673485 U CN 201821673485U CN 208888183 U CN208888183 U CN 208888183U
- Authority
- CN
- China
- Prior art keywords
- signal
- ultrasonic
- operational amplifier
- sulfur hexafluoride
- microcontroller
- 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.)
- Active
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The utility model embodiment is related to electrical equipment detection technique field, specifically, it is related to a kind of sulfur hexafluoride gas detection device based on ultrasonic wave principle, including microcontroller and it is set to the indoor transmitting unit of chamber and receiving unit, receiving unit is connect with microcontroller, transmitting unit is for successively generating the first pulse wave signal and the second pulse wave signal, first pulse wave signal and the second pulse wave signal are converted into the first ultrasonic signal and the second ultrasonic signal and emitted in chamber, receiving unit is for receiving the first ultrasonic signal and the second ultrasonic signal, calculate the phase difference value obtained between the first ultrasonic signal and the second ultrasonic signal, phase difference value is converted into voltage signal, voltage signal flows to microcontroller, microcontroller is used to voltage signal being converted to concentration of sulfur hexafluoride signal, this six Device used by sulfur fluoride gas-detecting device is few, and connection relationship is succinct, and detection accuracy is high, cost performance with higher.
Description
Technical field
The utility model embodiment is related to electrical equipment detection technique field, is based on ultrasonic wave in particular to one kind
The sulfur hexafluoride gas detection device of principle.
Background technique
Sulfur hexafluoride gas SF6Insulation and arc extinction performance it is excellent, chemical property stablize, be widely used in high-voltage electrical apparatus
In equipment, such as: Cubicle Gas-Insulated Switchgear (gas-insulated metal-enclosed switchgear,
GIS), high-tension transformer, breaker etc..
It, may since there are improper operations during the manufacture and installation difference, aging and operation and maintenance of power equipment
Lead to SF6It leaks.On the one hand, the SF of leakage6Gas can decompose under electric discharge or high temperature action and generate toxic gas,
And SF6Density ratio air is big, easily causes low layer space anoxic to make one to suffocate.On the other hand, the SF of power equipment6Leakage
It will lead to its decreasing insulating, failure may be caused.Therefore, it is the reliability service for ensuring power equipment, ensures work on the spot
The personal safety of personnel, accurately detects SF6Leakage concentration be of great significance.
But existing detection SF6The most cost performance of the method for concentration is not high.
Utility model content
The sulfur hexafluoride gas detection device based on ultrasonic wave principle that in view of this, the present invention provides a kind of, tool
There is higher cost performance.
The utility model embodiment provides a kind of sulfur hexafluoride gas detection device based on ultrasonic wave principle, including micro-
Controller, transmitting unit and receiving unit；
The transmitting unit is set in a chamber, and the receiving unit is set in the chamber single far from the transmitting
The position of member, the receiving unit are connect with the microcontroller；
The transmitting unit is for successively generating the first pulse wave signal and the second pulse wave signal, by first pulse
Wave signal is converted to the first ultrasonic signal, and second pulse wave signal is converted to the second ultrasonic signal, by described
One ultrasonic signal and second ultrasonic signal are emitted in the chamber；
The receiving unit is counted for receiving indoor first ultrasonic signal of the chamber and second ultrasonic signal
The phase difference value obtained between first ultrasonic signal and second ultrasonic signal is calculated, the phase difference value is converted
For voltage signal, the voltage signal flows to the microcontroller；
The microcontroller is used to the voltage signal being converted to concentration of sulfur hexafluoride signal.
Optionally, the transmitting unit includes transmit circuit, transmitting probe and the first ultrasonic sensor, the transmitting electricity
Road is connect with the transmitting probe, and the transmitting probe is connect with first ultrasonic sensor, wherein first ultrasound
Wave sensor is set in a chamber；
The transmit circuit is for successively generating first pulse wave signal and second pulse wave signal；
The transmitting probe is used to for first pulse wave signal and second pulse wave signal to be transmitted to described the
One ultrasonic sensor；
First ultrasonic sensor is used to first pulse wave signal being converted to first ultrasonic signal,
Second pulse wave signal is converted into second ultrasonic signal, described is surpassed first ultrasonic signal and the second
Acoustic signals are emitted in the chamber.
Optionally, the transmitting probe includes phase inverter and first port；
The phase inverter is connect with the transmit circuit and the first port respectively, the first port and described first
Ultrasonic sensor connection；
The phase inverter is used to first pulse wave signal and second pulse wave signal passing through the first end
First ultrasonic sensor is transported in oral instructions.
Optionally, the transmit circuit is crystal oscillating circuit.
Optionally, the phase inverter is 74HC04.
Optionally, the receiving unit includes receiving circuit and the second ultrasonic sensor, second supersonic sensing
Device is set to the position in the chamber far from first ultrasonic sensor, and second ultrasonic sensor connects with described
Circuit connection is received, the reception circuit is connect with the microcontroller；
Second ultrasonic sensor is for receiving first ultrasonic signal and second ultrasonic signal, institute
It states the first ultrasonic signal and second ultrasonic signal flows to the reception circuit；
The reception circuit obtains between first ultrasonic signal and second ultrasonic signal for calculating
The phase difference value is converted to voltage signal by phase difference value, and the voltage signal is carried out decompression processing, completes decompression processing
Voltage signal later flows to the microcontroller.
Optionally, the reception circuit includes second port, the first operational amplifier, second operational amplifier and third fortune
Calculate amplifier；
The second port is connect with second ultrasonic sensor and first operational amplifier respectively, and described
One operational amplifier is connect with the second operational amplifier, and the second operational amplifier and the third operational amplifier connect
It connects；
First ultrasonic signal and second ultrasonic signal flow to described first by the second port and transport
Amplifier and the second operational amplifier are calculated, first operational amplifier and the second operational amplifier are obtained for calculating
The phase difference value between first ultrasonic signal and second ultrasonic signal is obtained, the phase difference value is converted into electricity
Signal is pressed, the voltage signal flows to the third operational amplifier；
The third operational amplifier is used to carrying out the voltage signal into decompression processing, completes the electricity after decompression processing
Press microcontroller described in signal flow.
Optionally, first operational amplifier and the second operational amplifier are SA5532, and the third operation is put
Big device is LM290.
Optionally, the sulfur hexafluoride gas detection device further includes temperature sensor, the temperature sensor with it is described
Microcontroller connection；
The temperature sensor is used to acquire the temperature information of the exterior thereto, the temperature information is transmitted to described
Microcontroller；
The microcontroller corrects the concentration of sulfur hexafluoride for receiving the temperature information, according to the temperature information
Signal.
Optionally, the model SHT20 of the temperature sensor.
Beneficial effect
A kind of sulfur hexafluoride gas detection device based on ultrasonic wave principle provided by the embodiment of the utility model, transmitting are single
The first ultrasonic signal and the received cell translation of the second ultrasonic signal sent after first elder generation into chamber is to be able to reflect the
The voltage signal of phase difference between one ultrasonic signal and the second ultrasonic signal, the voltage signal are converted into through microcontroller
Concentration of sulfur hexafluoride signal is guaranteeing that sulfur hexafluoride is dense using the phase difference of ultrasonic signal as Concentration Testing variable
It under the premise of degree detection accuracy only needs that a set of transmitting unit is arranged, reduces the setting of extra device, reduce cost, because
This, the sulfur hexafluoride gas detection device cost performance with higher.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is a kind of sulfur hexafluoride gas detection device based on ultrasonic wave principle provided by the utility model embodiment
100 structural block diagram.
Fig. 2 is a kind of circuit diagram of transmitting unit 2 provided by the utility model embodiment.
Fig. 3 is a kind of circuit diagram of receiving unit 3 provided by the utility model embodiment.
Fig. 4 is a kind of detection principle diagram of phase difference provided by the utility model embodiment.
Icon:
Sulfur hexafluoride gas detection device of the 100- based on ultrasonic wave principle；
1- microcontroller；
2- transmitting unit；21- transmit circuit；22- transmitting probe；221- phase inverter；222- first port；23- the first surpasses
Sonic sensor；
3- receiving unit；31- receives circuit；311- second port；The first operational amplifier of 312-；The second operation of 313- is put
Big device；314- third operational amplifier；The second ultrasonic sensor of 32-；
4- chamber；
5- temperature sensor.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is a part of the embodiment of the utility model, instead of all the embodiments.Usually retouched in attached drawing here
The component of the utility model embodiment stated and shown can be arranged and be designed with a variety of different configurations.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, unless otherwise clearly defined and limited, term " setting ", " connected ", " company
Connect " it shall be understood in a broad sense, for example, it may be being fixedly connected, it may be a detachable connection, or be integrally connected；It can be machine
Tool connection, is also possible to be electrically connected；It can be directly connected, two members can also be can be indirectly connected through an intermediary
Connection inside part.For the ordinary skill in the art, it can understand that above-mentioned term is practical new at this with concrete condition
Concrete meaning in type.
Inventor further investigation reveals that, common SF at present6Gas concentration detection method has infrared absorption method, electrochemical sensing
Device method, gas chromatography etc., although infrared absorption method detection accuracy is very high, its equipment manufacturing cost higher cost；Electrochemical sensing
Device method is influenced vulnerable to Cucumber in environment in use and poison deactivation, sensitivity can also be reduced with the time limit；Gas phase
Chromatography is at high price and is limited by laboratory condition, and on-site test can not be applied to.
In contrast, ultrasonic method have cheap, design is simple, not vulnerable to electromagnetic interference influence, be easily installed etc. it is excellent
Gesture is suitble to apply to the scene on-line monitoring of electric system, but inventor is through further investigation discovery, existing to utilize ultrasound
The method of wave principle detection sulfur hexafluoride gas concentration mostly uses greatly bicavate detection method, specifically, using two groups of ultrasonic waves
Measurement channel is detected, and detects the associated ultrasonic wave propagation parameter of background gas and under test gas respectively, after difference indirectly
Measure the concentration of gas.But this method needs to guarantee the conditions such as the ultrasonic sensor characteristic in two channels, sound path, temperature
It is exactly the same, it is difficult to realize.
Therefore, from the point of view of in conjunction with the method for existing detection sulfur hexafluoride gas concentration, there is a problem of that sexual valence is relatively low.
Defect present in the above scheme in the prior art, is that inventor is obtaining after practicing and carefully studying
As a result, therefore, what the discovery procedure of the above problem and hereinafter the utility model embodiment were proposed regarding to the issue above
Solution all should be the contribution that inventor makes the utility model during the utility model.
Based on the studies above, the utility model embodiment provides a kind of sulfur hexafluoride gas inspection based on ultrasonic wave principle
Survey device, cost performance with higher.
The utility model embodiment is detected using single channel, changes the frequency for sending pulse wave signal twice by detection
Caused phase difference calculates the ultrasonic propagation velocity in mixed gas, and then measures the hexafluoro in mixed gas indirectly
Change sulphur concentration, the device used is simple, can be flexibly applied to it is a variety of under the conditions of, and can guarantee concentration of sulfur hexafluoride detection
Accuracy, cost performance with higher.
Fig. 1 shows a kind of sulfur hexafluoride gas detection based on ultrasonic wave principle provided by the utility model embodiment
The structural block diagram of device 100 should include as seen from the figure micro-control based on the sulfur hexafluoride gas detection device 100 of ultrasonic wave principle
Device 1, transmitting unit 2 and receiving unit 3 processed.Wherein, transmitting unit 2 is set in a chamber 4, and receiving unit 3 is set to chamber 4
The position of interior separate transmitting unit 2, receiving unit 3 are connect with microcontroller 1.
Transmitting unit 2 is for successively generating the first pulse wave signal and the second pulse wave signal, by the first pulse wave signal
Be converted into the first ultrasonic signal, the second pulse wave signal be converted into the second ultrasonic signal, by the first ultrasonic signal and
Second ultrasonic signal is emitted in the chamber.
Receiving unit 3 is used to receive the first ultrasonic signal and second ultrasonic signal in chamber 4, calculates and obtains
Phase difference value is converted to voltage signal, voltage letter by the phase difference value between the first ultrasonic signal and the second ultrasonic signal
Number flow to microcontroller 1.Microcontroller 1 is then for being converted to concentration of sulfur hexafluoride signal for voltage signal.It is appreciated that micro-control
Device 1, transmitting unit 2 and receiving unit 3 processed are circuit board or chip, and there are certain connection relationships.Since the present embodiment is based on
Phase difference value detects concentration of sulfur hexafluoride, therefore can greatly simplify microcontroller 1, transmitting unit 2 and receive single
Connection relationship between member 3.
For convenient for being more clearly from illustrated to the sulfur hexafluoride gas detection device, first below to being based on phase difference
The principle of value detection concentration of sulfur hexafluoride is illustrated:
Ultrasonic wave is a kind of elastic wave, and the spread speed in various concentration gas medium can change.For binary
Mixed gas can be considered that perfect gas, ultrasonic wave are propagated in gas with high frequency, small amplitude motion under normal temperature and pressure, the process
It is considered as adiabatic process.According to ideal-gas model, the velocity of sound can be by gas relative molecular mass, temperature isoparametric formulations.It is right
In single component gas, the velocity of sound are as follows:
In formula, γ is the specific heat at constant pressure of gas and the ratio of specific heat at constant volume, and M is the relative molecular mass of gas, and R is to rub
That gas constant, T is temperature.
For binary mixture, bulk sound velocity degree are as follows:
In formula,For binary mixture bulk sound velocity,For the level pressure specific heat at constant volume ratio of mixed gas,It is mixed for binary
Close gas average molecular mass.
If α, β are respectively under test gas and background gas, MαAnd MβThe respectively relative molecular mass of α and β gas, then have:
In formula, n is the concentration of α gas, and (1-n) is the concentration of β gas, CVαAnd CVβThe respectively specific heat at constant volume of α, β gas
Hold, CPαAnd CPβThe respectively specific heat at constant pressure of α, β gas.
It is possible to further obtain:
An2+ Bn+D=0,0≤n≤1
It is only single to above-mentioned equation, the concentration of α gas can be acquired:
For convenience of solution, and then A, B and D are found out, introduces parameterIt therefore, can be in the hope of:
A=(MαCVα+MβCVβ-MαCVβ-MβCVα)Y
B=(MαCVβ+MβCVα-2MβCVβ)Y-CPαCPβ
C=MβCVβY-CPβ
It is derived by above formula it is found that parameter Y can be by the mixed gas velocity of soundAcquired with temperature T, when determine background gas and to
When surveying gas, other parameters are the constant being easily obtained, and temperature T can also be obtained by temperature sensors of high precision.Therefore, it asks
Obtain the mixed gas velocity of soundUnder test gas concentration n, in the present embodiment, under test gas SF can be acquired6。
Further, velocity of wave of the ultrasonic wave in mixed gas are as follows:
In formula, L is sound path, it can be understood as the distance between transmitting unit 2 and receiving unit 3 in Fig. 1, Δ θ are first
Phase difference value between ultrasonic signal and the second ultrasonic signal, Δ f are the first ultrasonic signal and the second ultrasonic signal
Between frequency difference.
Thus, it is only required to acquire Δ θ and Δ f, SF in chamber 4 can be found out6Concentration.
Referring to Fig. 2, transmitting unit 2 includes transmit circuit 21, transmitting probe 22 and the first ultrasonic sensor 23, transmitting
Probe 22 includes phase inverter 221 and first port 222.Further, transmit circuit 21 is connect with phase inverter 221, phase inverter 221
It is connect with first port 222, first port is connect with the first ultrasonic sensor 23.Wherein, the first ultrasonic sensor 23 is set
It is placed in the chamber 4 in Fig. 1.
Referring to Fig. 3, receiving unit 3 includes receiving circuit 31 and the second ultrasonic sensor 32, receiving circuit 31 includes
Second port 311, the first operational amplifier 312, second operational amplifier 313 and third operational amplifier 314.Wherein, second
Port 311 is connect with the second ultrasonic sensor 32 and the first operational amplifier 312 respectively, the first operational amplifier 312 with
Second operational amplifier 313 connects, and second operational amplifier 313 is connect with third operational amplifier 314, third operational amplifier
314 connect with microcontroller 1, and the second ultrasonic sensor 32 is set to the position in chamber 4 far from the first ultrasonic sensor 23
It sets.
Fig. 2, Fig. 3 and Fig. 4 are please referred to, transmit circuit 21 is for successively generating the first pulse wave signal and the second pulse
Wave signal, wherein the frequency of the first pulse wave signal is f1, the frequency of the second pulse wave signal is f2.Phase inverter 221 is used for will
First pulse wave signal and the second pulse wave signal pass through first port 222 and are transmitted to the first ultrasonic sensor 23, the first surpass
Sonic sensor 23 is for being converted to the first ultrasonic signal for the first pulse wave signal and the second pulse wave signal and the second surpassing
Acoustic signals emit the first ultrasonic signal and the second ultrasonic signal in chamber 4.
It is appreciated that the second ultrasonic sensor 32 can successively receive the first ultrasonic signal and the second ultrasonic wave letter
Number, the first ultrasonic signal and the second ultrasonic signal pass through second port 311 and flow to the first operational amplifier 312, wherein the
One operational amplifier 312 and second operational amplifier 313 can calculate the first ultrasonic signal and the second ultrasonic signal it
Between phase difference value Δ θ, as shown in figure 4, phase difference value Δ θ is then converted into voltage signal, as the VO in Fig. 3, VO are passed through
Third operational amplifier 314 becomes VO_OUT after being depressured, and VO_OUT flows to microcontroller 1, and VO_OUT is converted by microcontroller 1
Concentration of sulfur hexafluoride signal, and exported, staff can obtain concentration of sulfur hexafluoride signal by microcontroller 1.
For example, transmit circuit 21 is first with f1(41kHz) issues 6~8 continuous first pulse wave signals, first arteries and veins
It rushes wave signal to be converted into the first ultrasonic signal through the first ultrasonic sensor 23 and emitted, when the second ultrasonic sensor
32 when receiving the first ultrasonic signal, and transmit circuit 21 just will continue to f2(40kHz) issues 6~8 continuous first arteries and veins
Rush wave signal.
It is appreciated that Δ f=f1-f2, when the VO_OUT for characterizing Δ θ flows to microcontroller 1, microcontroller 1 obtains Δ
F and VO_OUT can convert out corresponding concentration of sulfur hexafluoride signal.
In the present embodiment, microcontroller 1 is ARM chip, the model 74HC04 of phase inverter 221, the first operation amplifier
The model SA5532 of device 312 and second operational amplifier 313, the model LM290 of third operational amplifier 314.
Optionally, please continue to refer to Fig. 1, which further includes temperature sensor 5, temperature sensing
Device 5 is used to acquire the temperature information outside chamber 4, temperature information is transmitted to microcontroller 1, microcontroller 1 is for receiving temperature
Information is spent, concentration of sulfur hexafluoride signal, in the present embodiment, the model of temperature sensor 5 are corrected according to temperature information
SHT20。
It is appreciated that associated assay devices required for the sulfur hexafluoride gas detection device are few, connection relationship is succinct, and
The accuracy that can guarantee sulfur hexafluoride gas concentration detection, it is short, bulky, stable to overcome the existing detection device service life
Property it is poor the features such as, meet power system security production trend, can be widely applied for the substation of various voltage class.
To sum up, a kind of sulfur hexafluoride gas detection dress based on ultrasonic wave principle provided by the utility model embodiment
It sets, cost performance with higher.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of sulfur hexafluoride gas detection device based on ultrasonic wave principle, which is characterized in that single including microcontroller, transmitting
Member and receiving unit；
The transmitting unit is set in a chamber, and the receiving unit is set in the chamber far from the transmitting unit
Position, the receiving unit are connect with the microcontroller；
The transmitting unit believes first impulse wave for successively generating the first pulse wave signal and the second pulse wave signal
Number the first ultrasonic signal is converted to, second pulse wave signal is converted into the second ultrasonic signal, the first is surpassed described
Acoustic signals and second ultrasonic signal are emitted in the chamber；
The receiving unit is used to receive indoor first ultrasonic signal of the chamber and second ultrasonic signal, calculating obtain
The phase difference value between first ultrasonic signal and second ultrasonic signal is obtained, the phase difference value is converted into electricity
Signal is pressed, the voltage signal flows to the microcontroller；
The microcontroller is used to the voltage signal being converted to concentration of sulfur hexafluoride signal.
2. sulfur hexafluoride gas detection device according to claim 1, which is characterized in that the transmitting unit includes transmitting
Circuit, transmitting probe and the first ultrasonic sensor, the transmit circuit are connect with the transmitting probe, the transmitting probe with
The first ultrasonic sensor connection, wherein first ultrasonic sensor is set in a chamber；
The transmit circuit is for successively generating first pulse wave signal and second pulse wave signal；
The transmitting probe, which is used to for first pulse wave signal and second pulse wave signal being transmitted to, described the first to be surpassed
Sonic sensor；
First ultrasonic sensor is used to first pulse wave signal being converted to first ultrasonic signal, by institute
It states the second pulse wave signal and is converted to second ultrasonic signal, by first ultrasonic signal and second ultrasonic wave
Signal is emitted in the chamber.
3. sulfur hexafluoride gas detection device according to claim 2, which is characterized in that the transmitting probe includes reverse phase
Device and first port；
The phase inverter is connect with the transmit circuit and the first port respectively, the first port and first ultrasound
Wave sensor connection；
The phase inverter is used to first pulse wave signal and second pulse wave signal passing through the first end oral instructions
Transport to first ultrasonic sensor.
4. sulfur hexafluoride gas detection device according to claim 2, which is characterized in that the transmit circuit is crystal oscillator electricity
Road.
5. sulfur hexafluoride gas detection device according to claim 3, which is characterized in that the phase inverter is 74HC04.
6. sulfur hexafluoride gas detection device according to claim 2, which is characterized in that the receiving unit includes receiving
Circuit and the second ultrasonic sensor, second ultrasonic sensor are set in the chamber far from first ultrasonic wave
The position of sensor, second ultrasonic sensor and the reception circuit connection, the reception circuit and the microcontroller
Device connection；
Second ultrasonic sensor is for receiving first ultrasonic signal and second ultrasonic signal, and described the
One ultrasonic signal and second ultrasonic signal flow to the reception circuit；
The circuit that receives is used to calculate the phase obtained between first ultrasonic signal and second ultrasonic signal
The phase difference value is converted to voltage signal by difference, the voltage signal is carried out decompression processing, after completion decompression processing
Voltage signal flow to the microcontroller.
7. sulfur hexafluoride gas detection device according to claim 6, which is characterized in that the reception circuit includes second
Port, the first operational amplifier, second operational amplifier and third operational amplifier；
The second port is connect with second ultrasonic sensor and first operational amplifier respectively, first fortune
Amplifier to be calculated to connect with the second operational amplifier, the second operational amplifier is connect with the third operational amplifier,
The third operational amplifier is connect with the microcontroller；
First ultrasonic signal and second ultrasonic signal flow to first operation by the second port and put
Big device and the second operational amplifier, first operational amplifier and the second operational amplifier obtain institute for calculating
The phase difference value between the first ultrasonic signal and second ultrasonic signal is stated, the phase difference value is converted into voltage letter
Number, the voltage signal flows to the third operational amplifier；
The third operational amplifier is used to carrying out the voltage signal into decompression processing, completes the voltage letter after decompression processing
Number flow to the microcontroller.
8. sulfur hexafluoride gas detection device according to claim 7, which is characterized in that first operational amplifier and
The second operational amplifier is SA5532, and the third operational amplifier is LM290.
9. sulfur hexafluoride gas detection device according to claim 1, which is characterized in that the sulfur hexafluoride gas detection
Device further includes temperature sensor, and the temperature sensor is connect with the microcontroller；
The temperature sensor is used to acquire the temperature information of the exterior thereto, and the temperature information is transmitted to the micro-control
Device processed；
The microcontroller is corrected the concentration of sulfur hexafluoride according to the temperature information and is believed for receiving the temperature information
Number.
10. sulfur hexafluoride gas detection device according to claim 9, which is characterized in that the type of the temperature sensor
Number be SHT20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821673485.0U CN208888183U (en) | 2018-10-15 | 2018-10-15 | A kind of sulfur hexafluoride gas detection device based on ultrasonic wave principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821673485.0U CN208888183U (en) | 2018-10-15 | 2018-10-15 | A kind of sulfur hexafluoride gas detection device based on ultrasonic wave principle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208888183U true CN208888183U (en) | 2019-05-21 |
Family
ID=66516259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821673485.0U Active CN208888183U (en) | 2018-10-15 | 2018-10-15 | A kind of sulfur hexafluoride gas detection device based on ultrasonic wave principle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208888183U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187738A (en) * | 2018-10-15 | 2019-01-11 | 江苏久创电气科技有限公司 | A kind of sulfur hexafluoride gas detection device based on ultrasonic wave principle |
| CN113295344A (en) * | 2021-04-28 | 2021-08-24 | 成都秦川物联网科技股份有限公司 | Method for detecting gas leakage by ultrasonic wave |
-
2018
- 2018-10-15 CN CN201821673485.0U patent/CN208888183U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187738A (en) * | 2018-10-15 | 2019-01-11 | 江苏久创电气科技有限公司 | A kind of sulfur hexafluoride gas detection device based on ultrasonic wave principle |
| CN113295344A (en) * | 2021-04-28 | 2021-08-24 | 成都秦川物联网科技股份有限公司 | Method for detecting gas leakage by ultrasonic wave |
| CN113295344B (en) * | 2021-04-28 | 2023-03-24 | 成都秦川物联网科技股份有限公司 | Method for detecting gas leakage by ultrasonic wave |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103913714B (en) | Calibration system of partial discharge supersonic detector | |
| CN102889968B (en) | Acoustical method for detecting low-concentration sulfur hexafluoride gas | |
| CN203799002U (en) | Data acquisition device for verification testing of partial discharge supersonic reflectoscope | |
| CN109187738A (en) | A kind of sulfur hexafluoride gas detection device based on ultrasonic wave principle | |
| CN208888183U (en) | A kind of sulfur hexafluoride gas detection device based on ultrasonic wave principle | |
| CN113030248B (en) | Hydrogen measurement system and method based on ultrasonic double-frequency phase difference | |
| CN113654702B (en) | Method for detecting residual stress of GIS basin-type insulator | |
| CN103424675A (en) | Ultrahigh frequency antenna array partial discharge detection system | |
| Minglei et al. | Gas concentration detection using ultrasonic based on wireless sensor networks | |
| CN110426371A (en) | A kind of system detecting the HF gas in SF6 electrical equipment | |
| CN207066691U (en) | One kind quantitatively detects SF based on ultrasonic wave6The on-Line Monitor Device of gas leakage | |
| CN108645910A (en) | A method of the inflection point the detection of gas compositions based on velocity of sound spectral line | |
| CN204758243U (en) | Gaseous dew point of SF6 leaks tester | |
| CN113686965A (en) | GIS basin-type insulator subsurface thermal stress ultrasonic detection method and system | |
| CN102590337B (en) | Acoustical method and device for detecting concentration of trace sulfur hexafluoride | |
| CN104535456A (en) | Novel sulfur hexafluoride gas density micro-water transmitter | |
| CN204346980U (en) | A kind of detector for SF6 gas concentration on-line monitoring | |
| CN105091990B (en) | A kind of ultrasonic flowmeter water-free detection method | |
| CN108152370A (en) | A kind of SF6And N2Mixing gas component ratio device for fast detecting and method | |
| Abate et al. | Smart meters communication using Gas pipelines as channel: feasibility study | |
| CN206657100U (en) | The field test system of superfrequency partial discharge monitoring device | |
| CN106979963A (en) | A kind of device for measuring water quality pH value | |
| JPH0310157A (en) | Gas-concentration measuring apparatus | |
| CN112179297A (en) | Composite insulator sheath core displacement detection method based on microwave reflection technology | |
| BR112022011144A2 (en) | SYSTEM AND METHOD TO MEASURE HYDROPHONE IMPEDANCE AND, APPARATUS TO MEASURE SEISMIC DATA |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |