CN108020343A - A kind of station boiler sound wave thermometric reception device - Google Patents
A kind of station boiler sound wave thermometric reception device Download PDFInfo
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- CN108020343A CN108020343A CN201810085784.0A CN201810085784A CN108020343A CN 108020343 A CN108020343 A CN 108020343A CN 201810085784 A CN201810085784 A CN 201810085784A CN 108020343 A CN108020343 A CN 108020343A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/22—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using measurement of acoustic effects
- G01K11/24—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using measurement of acoustic effects of the velocity of propagation of sound
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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
A kind of station boiler sound wave thermometric reception device of the present invention, belongs to station boiler sound wave thermometric reception device technical field；Technical problem to be solved is：It is simple in structure to provide one kind, uses simplicity, the station boiler sound wave thermometric reception device of high certainty of measurement；Solve technical solution that the technical problem uses for：Including adapting amplifier device, band pass filter means, secondary amplifying device, logarithmic amplification device and integration amplifying device, the output terminal of the adapting amplifier device is connected with the input terminal of band pass filter means, the output terminal of the band pass filter means is connected with the input terminal of secondary amplifying device, the output terminal of the secondary amplifying device is connected with the input terminal of logarithmic amplification device, and the output terminal of the logarithmic amplification device is connected with integrating the input terminal of amplifying device；The output terminal of the integration amplifying device is connected with the signal input part of central controller, and the signal output part of the central controller is connected with sound wave dispensing device；The present invention is applied to station boiler temperature measuring equipment.
Description
Technical field
A kind of station boiler sound wave thermometric reception device of the present invention, belongs to station boiler sound wave thermometric reception device technology neck
Domain.
Background technology
The energy is the key of the national economic development and social stability, in China's energy resource structure, thermal power generation energy supply accounting
70% or so, and boiler directly influences the economy of unit as one of three big capital equipment of power plant, its safe and highly efficient operation
Property and security, station boiler is in view of its huge energy consumption and product withdraw situation, and early oneself becomes the important supervision pair of Chinese Ministry of Environmental Protection
As；Since the combustion process in furnace of power-plant boilers is a kind of extremely complex suspension combustion, stream, transient changing, work are carried at random
Condition is unstable, if not can determine that the temperature field in burner hearth, boiler operating state suitably cannot be adjusted in time, by pole
Fuel particle incomplete combustion is easily led to, boiler thermal efficiency reduces, and unit operation economy declines, and can produce more nitrogen oxidations
The pollutant such as thing and dust, village, deflection, wash away water-cooling wall, may cause to shut down in flame, are more likely to that the safe things such as booster occur
Therefore；Therefore the temperature field in boiler furnace is monitored and just seems particularly significant.
Boiler hearth temperature measuring method mainly have thermocouple temperature measurement, Red external spectrums thermometric, optical fiber temperature-measurement, good fortune penetrate thermometric,
Laser spectrum thermometric and acoustic thermometry etc.；
During thermocouple temperature measurement need measurement end is directly contacted with temperature field to be measured, due to stove chamber inner combustion pulse, thermocouple with
Environment is difficult to reach thermal balance, and the heatproof limitation due to thermocouple and measurement method so that this method can only be surveyed the short time
Amount single point temperature, high failure rate, operating quantity are big；
There are a large amount of interference and inhale in infrared spectrum thermometric because producing gas componant and content complexity in burner hearth combustion process
Receive, cause error larger；
Optical fiber temperature-measurement is the supplement and raising to traditional temp measuring method, skilful on its surface using the sapphire of the resistance to high humiditys of W as matrix
Metal foil Mo Xing Cheng body cavity, thermometric mode is similar to thermocouple, but with service life length, the advantages that dynamic response is fast, so
And fibre optical sensor is there are price is high, can only local thermometric the shortcomings of；
Case penetrates temp measuring method and utilizes Planck radiation laws, flame image is absorbed using camera, according to duochrome method radiation temperature
Testing principle carries out in-furnace temperature calculating, and with the development of computer, flame Image Processing technical prospect is wide, but is surveyed in real time
There are technology short slab, reduction apparatus and method are still immature in terms of amount and three dimensional displacement fields；
The basic principle of laser spectrum thermometric is Boltzmann equation by arranging a plurality of light path, it is possible to achieve the space in temperature field
Measurement, but the experimental study stage is primarily now confined to, there are many research work to need to do.
Sound wave thermometric is in the different principle of the Propagation speed of different temperatures, by arranging multiple sound using sound
Wave sensor, forms sound wave hygrometric path network, and the reproduction of fire box temperature field, tool are carried out according to corresponding reconstruction of temperature field algorithm
There is a real time on-line monitoring, response is fast, small to former temperature field interference effect, the advantages that adapting to the adverse circumstances such as high temperature, more dirt, sound
Learn thermometry and compare application of the above-mentioned other temp measuring methods more suitable for thermal power plant's station boiler thermometric；In station boiler
Temperature field is an important factor for determining boiler safety, economical operation, energy-saving and emission-reduction, and acoustic thermometry technology is as a kind of advanced non-
Contact thermography technology, has many advantages, such as real time on-line monitoring, measurement of full field, has in terms of boiler hearth temperature field measurement
Good application prospect.
External acoustic thermometry technical research is more early, and has put it into commercial operation, and domestic this respect research starting is than later, in state
Under the research of interior numerous scholars, the progress of stage is also achieved, but reconstruction of temperature field precision also needs to further improve, in temperature
Temperature profile effect is only considered in the reconstruction process of field, does not count flow；Another factor be exactly by
The restriction of acoustic receiver structure function itself, complicated, cost is higher, and short life, measurement accuracy is unstable, although installing additional
Acoustic waveguide tube can solve the problems, such as this, but this can produce Acoustic Wave Propagation certain influence, therefore the reception dress to sound wave thermometric
Put be improved it is just very urgent.
The content of the invention
To overcome the shortcomings of the prior art, technical problem to be solved is the present invention：It is simple in structure to provide one kind,
Use simplicity, the station boiler sound wave thermometric reception device of high certainty of measurement；In order to solve the above-mentioned technical problem, the present invention uses
Technical solution be：A kind of station boiler sound wave thermometric reception device, including it is adapting amplifier device, band pass filter means, secondary
Amplifying device, logarithmic amplification device and integration amplifying device, the output terminal of the adapting amplifier device and band pass filter means
Input terminal is connected, and the output terminal of the band pass filter means is connected with the input terminal of secondary amplifying device, the secondary amplification dress
The output terminal put is connected with the input terminal of logarithmic amplification device, output terminal and the integration amplifying device of the logarithmic amplification device
Input terminal is connected；
The output terminal of the integration amplifying device is connected with the signal input part of central controller, the signal of the central controller
Output terminal is connected with sound wave dispensing device；
The output terminal of the sound wave dispensing device is provided with sound wave emission port, and the input terminal of the adapting amplifier device is provided with
Acoustic receiver port, the thermometric sound wave that the sound wave emission port produces are passed through after station boiler furnace chamber by adapting amplifier device
Acoustic receiver port receives.
The adapting amplifier device, band pass filter means, secondary amplifying device, logarithmic amplification device and integration amplifying device
Circuit structure be：
It is connected after the output terminal serial capacitance C2 of the acoustic receiver port P1 with 3 feet of amplifier U1；
One end of 2 feet of the amplifier U1 and connecting resistance R18, is connected with one end of resistance R17 behind one end of capacitance C13, institute
It is grounded after stating the other end of the other end shunt-wound capacitance C13 of resistance R18；
The 4 feet ground connection of the amplifier U1；
7 feet of the amplifier U1 meet input power VCC；
6 feet of the amplifier U1 successively and connecting resistance R17 the other end, one end of inductance L2, behind one end of capacitance C10 with electricity
The one end for holding C3 is connected, and is grounded after the other end of the other end shunt-wound capacitance C10 of the inductance L2；
The other end of the capacitance C3 is connected with one end of inductance L1, the other end of the inductance L1 successively shunt-wound capacitance C6 one
End, is connected with one end of capacitance C4 behind one end of inductance L3, and the other end of the capacitance C6 simultaneously connects the other end of inductance L3 and is followed by
Ground；
The other end of the capacitance C4 is connected with one end of resistance R10, the other end of the resistance R10 and one end of connecting resistance R8
It is connected afterwards with 3 feet of amplifier U2；
It is connected behind 2 feet of the amplifier U2 and one end of connecting resistance R16 with one end of capacitance C9, the resistance R16's is another
It is grounded after the other end of end shunt-wound capacitance C9；
The 4 feet ground connection of the amplifier U2；
7 feet of the amplifier U2 meet input power VCC；
6 feet of the amplifier U2 successively and connecting resistance R8 the other end, one end phase behind one end of resistance R14 with capacitance C5
Even, the other end ground connection of the resistance R14, the other end of the capacitance C5 are connected with 1 foot of logafier U3；
It is connected behind 4 feet of the logafier U3 and one end of connecting resistance R19 with one end of capacitance C14, the resistance R19's
It is grounded after other end serial capacitance C15,9 feet of another termination logafier U3 of the capacitance C14；
One end of the 5 foot shunt-wound capacitance C11 of the logafier U3, input power VCC, behind one end of capacitance C12 with logarithm
7 feet of amplifier U3 are connected, and are grounded after the other end of the other end shunt-wound capacitance C12 of the capacitance C11；
The 11 feet ground connection of the logafier U3；
14 feet of the logafier U3 are simultaneously connected after connecing 16 feet with input power VCC；
10 feet of the logafier U3 are connected with one end of resistance R13, the other end and connecting resistance R15 of the resistance R13
One end after be connected with 2 feet of amplifier U4, the other end of resistance R15 ground connection；
One end of 3 feet of the amplifier U4 and connecting resistance R9, is connected with one end of resistance R11 behind one end of capacitance C7, described
The other end ground connection of resistance R11；
The 4 feet ground connection of the amplifier U4；
8 feet of the amplifier U4 are connected with input power VCC；
The other end of 1 foot of the amplifier U4 and connecting resistance R9, is connected with one end of resistance R12 after the other end of capacitance C7,
It is connected behind one end of the other end shunt-wound capacitance C8 of the resistance R12 with the signal input part of central controller, the capacitance C8
The other end ground connection.
The model TLC271C of the amplifier U1 and U2；The model ADL5904 of the logafier U3；It is described
The model OP07 of amplifier U4.
The central controller is also associated with display and keyboard.
The present invention has the beneficial effect that relative to what the prior art possessed：The present invention is more by being centered in acoustic receiver dress
Section amplifying circuit, the square-wave signal that can be sent to central controller are received and amplified, can be to station boiler inside not
Temperature with position measures, and restores the temperature field of boiler internal, and whole temperature measuring equipment is simple in structure, in measurement process
In multiple sound wave dispensing devices can be freely arranged at according to actual conditions to any position in electric boiler periphery, use simplicity, use
Sound wave thermometric mode, can carry out temperature measurement on-line, high certainty of measurement, be disturbed small, can promote the use of.
Brief description of the drawings
The present invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the electrical block diagram of the present invention；
In figure：1 it is adapting amplifier device, 2 be band pass filter means, 3 be secondary amplifying device, 4 be logarithmic amplification device, 5 is
Integration amplifying device, 6 be central controller, 7 be sound wave dispensing device.
Embodiment
As depicted in figs. 1 and 2, a kind of station boiler sound wave thermometric reception device of the present invention, including adapting amplifier device 1,
Band pass filter means 2, secondary amplifying device 3, logarithmic amplification device 4 and integration amplifying device 5, the adapting amplifier device 1
Output terminal is connected with the input terminal of band pass filter means 2, the output terminal of the band pass filter means 2 and secondary amplifying device 3
Input terminal is connected, and the output terminal of the secondary amplifying device 3 is connected with the input terminal of logarithmic amplification device 4, the logarithmic amplification
The output terminal of device 4 is connected with integrating the input terminal of amplifying device 5；
The output terminal of the integration amplifying device 5 is connected with the signal input part of central controller 6, the central controller 6
Signal output part is connected with sound wave dispensing device 7；
The output terminal of the sound wave dispensing device 7 is provided with sound wave emission port, and the input terminal of the adapting amplifier device 1 is set
There is a sound wave receiving port, the thermometric sound wave that the sound wave emission port produces is passed through after station boiler furnace chamber by adapting amplifier device
1 acoustic receiver port receives.
The adapting amplifier device 1, band pass filter means 2, secondary amplifying device 3, logarithmic amplification device 4 and integration amplification
The circuit structure of device 5 is：
It is connected after the output terminal serial capacitance C2 of the acoustic receiver port P1 with 3 feet of amplifier U1；
One end of 2 feet of the amplifier U1 and connecting resistance R18, is connected with one end of resistance R17 behind one end of capacitance C13, institute
It is grounded after stating the other end of the other end shunt-wound capacitance C13 of resistance R18；
The 4 feet ground connection of the amplifier U1；
7 feet of the amplifier U1 meet input power VCC；
6 feet of the amplifier U1 successively and connecting resistance R17 the other end, one end of inductance L2, behind one end of capacitance C10 with electricity
The one end for holding C3 is connected, and is grounded after the other end of the other end shunt-wound capacitance C10 of the inductance L2；
The other end of the capacitance C3 is connected with one end of inductance L1, the other end of the inductance L1 successively shunt-wound capacitance C6 one
End, is connected with one end of capacitance C4 behind one end of inductance L3, and the other end of the capacitance C6 simultaneously connects the other end of inductance L3 and is followed by
Ground；
The other end of the capacitance C4 is connected with one end of resistance R10, the other end of the resistance R10 and one end of connecting resistance R8
It is connected afterwards with 3 feet of amplifier U2；
It is connected behind 2 feet of the amplifier U2 and one end of connecting resistance R16 with one end of capacitance C9, the resistance R16's is another
It is grounded after the other end of end shunt-wound capacitance C9；
The 4 feet ground connection of the amplifier U2；
7 feet of the amplifier U2 meet input power VCC；
6 feet of the amplifier U2 successively and connecting resistance R8 the other end, one end phase behind one end of resistance R14 with capacitance C5
Even, the other end ground connection of the resistance R14, the other end of the capacitance C5 are connected with 1 foot of logafier U3；
It is connected behind 4 feet of the logafier U3 and one end of connecting resistance R19 with one end of capacitance C14, the resistance R19's
It is grounded after other end serial capacitance C15,9 feet of another termination logafier U3 of the capacitance C14；
One end of the 5 foot shunt-wound capacitance C11 of the logafier U3, input power VCC, behind one end of capacitance C12 with logarithm
7 feet of amplifier U3 are connected, and are grounded after the other end of the other end shunt-wound capacitance C12 of the capacitance C11；
The 11 feet ground connection of the logafier U3；
14 feet of the logafier U3 are simultaneously connected after connecing 16 feet with input power VCC；
10 feet of the logafier U3 are connected with one end of resistance R13, the other end and connecting resistance R15 of the resistance R13
One end after be connected with 2 feet of amplifier U4, the other end of resistance R15 ground connection；
One end of 3 feet of the amplifier U4 and connecting resistance R9, is connected with one end of resistance R11 behind one end of capacitance C7, described
The other end ground connection of resistance R11；
The 4 feet ground connection of the amplifier U4；
8 feet of the amplifier U4 are connected with input power VCC；
The other end of 1 foot of the amplifier U4 and connecting resistance R9, is connected with one end of resistance R12 after the other end of capacitance C7,
It is connected behind one end of the other end shunt-wound capacitance C8 of the resistance R12 with the signal input part of central controller 6, the capacitance C8
The other end ground connection.
The model TLC271C of the amplifier U1 and U2；The model ADL5904 of the logafier U3；It is described
The model OP07 of amplifier U4.
The central controller 6 is also associated with display and keyboard.
The present invention provides a kind of sound wave thermometric reception device, measures and obtains during electric boiler burner hearth internal temperature field is rebuild
Propagation time of the sound wave accurately launched in burner hearth is obtained, needs to consider Acoustic Wave Propagation road during another aspect reconstruction of temperature field
Footpath is produced curvature effect and measurement result can be made to have error due to temperature field in burner hearth and flow field effect；Can by acoustic thermometry principle
Know, propagation distance of the sound wave on every paths can be obtained by measuring, and be crossed so only needing to obtain one group of sound wave
Time data more, it is possible to complete to rebuild by the temperature field in boiler section to be measured, it is therefore desirable to set sound wave temp measuring system
The data of time of flying over to sound wave are acquired, and the central controller 6 that the data collected are sent to microcontroller is done into one
The processing of step, finally realizes the reconstruction to boiler internal two-dimensional temperature field.
The present invention includes following several circuit devices：Adapting amplifier device 1, band pass filter means 2, secondary amplifying device 3,
Logarithmic amplification device 4, integration amplifying device 5；Put before wherein amplifier U1 and resistance R17, R18 and capacitance C2, C13 composition
Big device 1, the numerical value of resistance R17, R18 determine the gain of amplifying circuit, gain generally are arranged to 10 in actual use；
Three rank LC bandpass filterings are set in band pass filter means 2, and forming band logical by inductance L1, L2, L3 and capacitance C3, C6, C10 filters
Wave circuit, the centre frequency of bandwidth-limited circuit is 20KHz, and bandwidth 3KHz, impedance is 50 Ω；Amplifier U2 and resistance R8,
R10, R16 and capacitance C4, C9 constitute secondary amplifying device 3, and gain is arranged to 10 when in use, additionally by setting capacitance
C9 and resistance R16 can play the role of filtering decoupling；
, can be by setting logarithmic amplification device 4 to realize in order to be further amplified to signal, the logarithmic amplification device
4 inside set logafier U3 be one possess high speed voltage output, frequency, demodulation frequency scope be DC~6GHz logarithm put
Big device；The logarithmic amplification device 4 has small-signal larger amplification, has less amplification to big signal, so
The peak value of big signal can be made more obvious, be more convenient the peak value of searching signal；The resistance R14 and capacitance C5 can be removed
Noise on conducting wire, the clutter that capacitance C11, C12 can remove power supply make power supply output more stablize；
Amplifier U4 and resistance R9, R11, R12, R13, R15 and capacitance C7, C8 constitute integration amplifying device 5, can be to letter
Number it is further amplified and denoising；SIG_AD described in figure connects the ADC pins of central controller 6, makes the control of microcontroller center
Device can be acquired and analyze and process to signal.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to
Can so modify to the technical solution described in foregoing embodiments, either to which part or all technical characteristic into
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (4)
- A kind of 1. station boiler sound wave thermometric reception device, it is characterised in that：Including adapting amplifier device（1）, bandpass filtering dress Put（2）, secondary amplifying device（3）, logarithmic amplification device（4）With integration amplifying device（5）, the adapting amplifier device（1）'s Output terminal and band pass filter means（2）Input terminal be connected, the band pass filter means（2）Output terminal and secondary amplifying device （3）Input terminal be connected, the secondary amplifying device（3）Output terminal and logarithmic amplification device（4）Input terminal be connected, it is described Logarithmic amplification device（4）Output terminal with integration amplifying device（5）Input terminal be connected；The integration amplifying device（5）Output terminal and central controller（6）Signal input part be connected, the central controller （6）Signal output part and sound wave dispensing device（7）It is connected；The sound wave dispensing device（7）Output terminal be provided with sound wave emission port, the adapting amplifier device（1）Input terminal It is provided with acoustic receiver port, the thermometric sound wave that the sound wave emission port produces is passed through after station boiler furnace chamber by preposition amplification Device（1）Acoustic receiver port receive.
- A kind of 2. station boiler sound wave thermometric reception device according to claim 1, it is characterised in that：The preposition amplification Device（1）, band pass filter means（2）, secondary amplifying device（3）, logarithmic amplification device（4）With integration amplifying device（5）Electricity Line structure is：It is connected after the output terminal serial capacitance C2 of the acoustic receiver port P1 with 3 feet of amplifier U1；One end of 2 feet of the amplifier U1 and connecting resistance R18, is connected with one end of resistance R17 behind one end of capacitance C13, institute It is grounded after stating the other end of the other end shunt-wound capacitance C13 of resistance R18；The 4 feet ground connection of the amplifier U1；7 feet of the amplifier U1 meet input power VCC；6 feet of the amplifier U1 successively and connecting resistance R17 the other end, one end of inductance L2, behind one end of capacitance C10 with electricity The one end for holding C3 is connected, and is grounded after the other end of the other end shunt-wound capacitance C10 of the inductance L2；The other end of the capacitance C3 is connected with one end of inductance L1, the other end of the inductance L1 successively shunt-wound capacitance C6 one End, is connected with one end of capacitance C4 behind one end of inductance L3, and the other end of the capacitance C6 simultaneously connects the other end of inductance L3 and is followed by Ground；The other end of the capacitance C4 is connected with one end of resistance R10, the other end of the resistance R10 and one end of connecting resistance R8 It is connected afterwards with 3 feet of amplifier U2；It is connected behind 2 feet of the amplifier U2 and one end of connecting resistance R16 with one end of capacitance C9, the resistance R16's is another It is grounded after the other end of end shunt-wound capacitance C9；The 4 feet ground connection of the amplifier U2；7 feet of the amplifier U2 meet input power VCC；6 feet of the amplifier U2 successively and connecting resistance R8 the other end, one end phase behind one end of resistance R14 with capacitance C5 Even, the other end ground connection of the resistance R14, the other end of the capacitance C5 are connected with 1 foot of logafier U3；It is connected behind 4 feet of the logafier U3 and one end of connecting resistance R19 with one end of capacitance C14, the resistance R19's It is grounded after other end serial capacitance C15,9 feet of another termination logafier U3 of the capacitance C14；One end of the 5 foot shunt-wound capacitance C11 of the logafier U3, input power VCC, behind one end of capacitance C12 with logarithm 7 feet of amplifier U3 are connected, and are grounded after the other end of the other end shunt-wound capacitance C12 of the capacitance C11；The 11 feet ground connection of the logafier U3；14 feet of the logafier U3 are simultaneously connected after connecing 16 feet with input power VCC；10 feet of the logafier U3 are connected with one end of resistance R13, the other end and connecting resistance R15 of the resistance R13 One end after be connected with 2 feet of amplifier U4, the other end of resistance R15 ground connection；One end of 3 feet of the amplifier U4 and connecting resistance R9, is connected with one end of resistance R11 behind one end of capacitance C7, described The other end ground connection of resistance R11；The 4 feet ground connection of the amplifier U4；8 feet of the amplifier U4 are connected with input power VCC；The other end of 1 foot of the amplifier U4 and connecting resistance R9, is connected with one end of resistance R12 after the other end of capacitance C7, Behind one end of the other end shunt-wound capacitance C8 of the resistance R12 with central controller（6）Signal input part be connected, the capacitance The other end ground connection of C8.
- A kind of 3. station boiler sound wave thermometric reception device according to claim 2, it is characterised in that：The amplifier U1 With the model TLC271C of U2；The model ADL5904 of the logafier U3；The model OP07 of the amplifier U4.
- A kind of 4. station boiler sound wave thermometric reception device according to claim 1, it is characterised in that：The center control Device（6）It is also associated with display and keyboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810085784.0A CN108020343A (en) | 2018-01-29 | 2018-01-29 | A kind of station boiler sound wave thermometric reception device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810085784.0A CN108020343A (en) | 2018-01-29 | 2018-01-29 | A kind of station boiler sound wave thermometric reception device |
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| Publication Number | Publication Date |
|---|---|
| CN108020343A true CN108020343A (en) | 2018-05-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810085784.0A Pending CN108020343A (en) | 2018-01-29 | 2018-01-29 | A kind of station boiler sound wave thermometric reception device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109613523A (en) * | 2018-10-23 | 2019-04-12 | 南通赛洋电子有限公司 | A kind of fathometer signal pre-processing circuit |
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| CN200966032Y (en) * | 2006-10-08 | 2007-10-24 | 薛文伟 | Weak AC signal preamplifier circuit |
| CN202505364U (en) * | 2012-04-25 | 2012-10-31 | 刘毅 | Noise-free optical coupling power acquisition system |
| CN206638368U (en) * | 2017-03-29 | 2017-11-14 | 神华集团有限责任公司 | Temperature measuring equipment for boiler |
| CN107490432A (en) * | 2017-04-27 | 2017-12-19 | 安徽华脉科技发展有限公司 | A kind of Feebleness Light Signal Examining system |
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- 2018-01-29 CN CN201810085784.0A patent/CN108020343A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200966032Y (en) * | 2006-10-08 | 2007-10-24 | 薛文伟 | Weak AC signal preamplifier circuit |
| CN202505364U (en) * | 2012-04-25 | 2012-10-31 | 刘毅 | Noise-free optical coupling power acquisition system |
| CN206638368U (en) * | 2017-03-29 | 2017-11-14 | 神华集团有限责任公司 | Temperature measuring equipment for boiler |
| CN107490432A (en) * | 2017-04-27 | 2017-12-19 | 安徽华脉科技发展有限公司 | A kind of Feebleness Light Signal Examining system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109613523A (en) * | 2018-10-23 | 2019-04-12 | 南通赛洋电子有限公司 | A kind of fathometer signal pre-processing circuit |
| CN109613523B (en) * | 2018-10-23 | 2023-04-07 | 南通赛洋电子有限公司 | Probe instrument signal preprocessing circuit |
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Application publication date: 20180511 |
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