CN206944956U - A kind of water film thickness sensor - Google Patents
A kind of water film thickness sensor Download PDFInfo
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- CN206944956U CN206944956U CN201720761322.7U CN201720761322U CN206944956U CN 206944956 U CN206944956 U CN 206944956U CN 201720761322 U CN201720761322 U CN 201720761322U CN 206944956 U CN206944956 U CN 206944956U
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Abstract
The utility model discloses a kind of water film thickness sensor, including：The circuit board and microwave antenna being arranged on the circuit board, electronic device and row's pin；The electronic device can produce the first signal and secondary signal, and first signal is launched through the microwave antenna and receives its echo, and be exported after the secondary signal and the echo are nursed one's health through row's pin to external system.The utility model has the advantage that：There is accuracy of detection height, strong antijamming capability, suitable for various climatic environments, and be adapted to operation all the year round, without surface maintenance, be easy to be integrated to a variety of meteorological equipments.
Description
Technical field
The invention belongs to water film thickness detection technique field, and in particular to a kind of water film thickness sensor.
Background technology
Surface gathered water is live very common phenomenon, either Route for pedestrians or car lane, no matter urban road is also
It is backroad, or road ponding all occurs in highway, rainy day in various degree.Road ponding not only easily make road surface,
Roadbed wrecks, more with the presence of potential safety hazard.The walking that Route for pedestrians rainy day ponding influences people is convenient, and car lane is to row
Car security presence hidden danger, particularly express highway pavement ponding serious threat traffic safety, so monitoring measurement road road in real time
The water film thickness of area water, and Surveillance center or headquarter are reported to, have great importance for managerial decision making.
Ponding measurement conventional now is usually to be surveyed by manual site, reading, report or utilize optics, electricity sensing
The methods of device output signal.The problems such as error is big, and easy missing inspection, poor real, subjective factor have a great influence be present in artificial detection；
Optics, electric sensor also exist O＆M is not convenient, the easy aging misalignment of long-play, easily by external table dusty complexion
The shortcomings of soil accumulation can not measure.
The content of the invention
It is an object of the invention to overcome deficiency of the prior art, there is provided a kind of water film thickness sensor, have detection
The advantages that precision is high, strong antijamming capability, suitable for various climatic environments, and it is adapted to operation all the year round, without surface maintenance, is easy to
It is integrated to a variety of meteorological equipments.
To solve prior art problem, the invention discloses a kind of water film thickness sensor, including：Circuit board and setting
Microwave antenna, electronic device and row's pin on circuit boards；
Electronic device can produce the first signal and secondary signal, and the first signal is launched through microwave antenna and receives its time
Ripple, and exported after secondary signal and echo are nursed one's health through arranging pin to external system.
Further, electronic device includes：Module, power distribution module, transceiver module, power phases detection occur for microwave
Module and input and output protection module；
Module occurs for microwave by microwave signal transmission to power distribution module, and microwave signal is divided into the by power distribution module
One signal and secondary signal；The first letter that first signal can be launched and be received by microwave antenna by transceiver module
Number echo transmit to power phases detection module；Power phases detection module can be defeated by inputting by secondary signal and echo
Go out protection module to transmit to external system.
Further, radome is additionally provided with circuit board, electronic device is arranged in radome.
Further, in addition to power amplifier module, power amplifier module are connected between transceiver module and microwave antenna.
Further, input and output protection module has electrostatic discharge protective circuit and voltage limiting circuit.
Further, in addition to temperature self-compensation circuit, the output end of temperature self-compensation circuit connect microwave respectively
Generation module, power distribution module, transceiver module and power phases detection module are so as to realizing auto thermal compensation.
Further, it is voltage controlled oscillator chip that module, which occurs, for microwave.
Further, microwave antenna is using rectangular-shaped micro-strip day made of photoetching corrosion hydrocarbon ceramic substrate
Line.
Further, microwave antenna has a window for being used for circuit board feed.
Further, the spacing for arranging pin is 2.54mm.
The beneficial effect that the present invention reaches：
1. accurately measurement is covered in the water film thickness on road surface, measuring range reaches 0~6mm, and measurement accuracy reaches
0.01mm。
2. using the single neilsbed connector of standard 2.54mm spacing, external printed circuit board is conveniently attached to.Utilize voltage stabilizing
Direct current 5V powers, and for whole biosensor power consumption within 200mW, output result is 0~5V voltages of standard, is easy on Electronic Performance
It is integrated to a variety of collecting devices.
3. using a variety of anti-interference devices, go for various harsh weather.Using automatic temperature-adjusting auto compensatng circuit,
Measurement result will not be influenceed because of the change of ambient temperature.
Brief description of the drawings
Fig. 1 is the structural representation of a preferred embodiment of the invention；
Fig. 2 is the circuit connection diagram of embodiment illustrated in fig. 1.
Reference：
1 Transfer Medium；2 microwave antennas；3 circuit boards；4 electronic devices；5 radomes；6 row's pins；7 moisture films to be measured.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following examples are only used for clearly illustrating the present invention
Technical scheme, and can not be limited the scope of the invention with this.
As illustrated in fig. 1 and 2, microwave survey rain water depth on road surface sensor main will be by high-frequency circuit board 3, cover it surface
Microwave antenna 2, be welded on all kinds of electronic devices 4 of its lower surface, be fixed on its lower surface metal electro-magnetic shielding cover 5 and
2.54mm spacing for being connected to external harmoniousness system is arranged pin 6 and formed.Electronic device 4 includes：Model MGM microwave occurs
Module, model PDM power distribution module, model REM transceiver module, model PPDM power phases detection module
And model IOPM input and output protection module.
Illustrate the specific implementation of water film thickness measurement below by way of microwave transfer medium 1 and moisture film to be measured 7：
The high-frequency microwave signal that electronic device 4 occurs（Decimetric wave wave band）, microwave antenna is delivered to by the cabling of circuit board 3
2, then it is transmitted from microwave and passes through Transfer Medium 1, reaches moisture film 7 to be measured.Microwave passes through after moisture film 7 to be measured, a part of quilt
Absorb, a part is reflected back toward Transfer Medium 1, is received after penetrating and by microwave antenna 2.The microwave reflected is again through oversampling circuit
After plate 3 is handled to electronic device 4, the voltage signal of water film thickness is exported to arranging pin 6.Above-mentioned measurement process is without outer CPU control
System, can with automatic cycle, continuously perform, external harmoniousness system only needs continuously to gather in real time.
It is additionally provided with temperature self-compensation circuit on circuit board 3, the output end of temperature self-compensation circuit connects micro- respectively
Module, power distribution module, transceiver module and power phases detection module occur for ripple so as to realize auto thermal compensation.
The microwave antenna 2 is on the hydrocarbon ceramic substrate of high-k, of the method for photoetching corrosion, is made
The one piece of rectangular-shaped microstrip antenna gone out, while a small window is carved on microwave antenna 2, for being fed from circuit board 3.
The metal electro-magnetic shielding cover 5 can prevent built-in field microwave signal to be radiated lower surface, to avoid influenceing
The operation of external harmoniousness system.It can prevent external electromagnetic field interference signal from entering this microwave remote sensor simultaneously, avoid measurement from tying
Fruit is inaccurate or causes working sensor abnormal.
Input and output protection module in the electronic device 4 of the inside of row's pin 6 connection have electrostatic discharge protective circuit and
Voltage limiting circuit, even if external interface has abnormal voltage input or user's abnormal operation, this can be protected to greatest extent
Sensor, prevent permanent damages.
The electric signal of microwave frequency band is produced by the independent voltage controlled oscillator chip of inside, actual measurement is about -30DB power.This
Signal is divided into two paths of signals after entering power distribution module：Enter transceiver module all the way, put by power amplifier module filtering
Microwave antenna is transferred to after big and carries out Microwave emission, the microwave echoes launched receive by antenna and back into power phase
Position detection module, it is -45DB~-55DB that this, which returns to microwave power,；Another way is directly entered power phases detection module, and this road is micro-
Wave power is about -50DB.Then above-mentioned two microwave signal exports by entering input and output protection module after detection module
To external harmoniousness system, sensor can be with completely compatible to various collection by outputting standard 0~5V analog voltage signals, this signal
Equipment, instrument and meter, integrated system etc..
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvement and deformation can also be made, these are improved and deformation
Also it should be regarded as protection scope of the present invention.
Claims (10)
- A kind of 1. water film thickness sensor, it is characterised in that：Including：Circuit board and the microwave day being arranged on the circuit board Line, electronic device and row's pin；The electronic device can produce the first signal and secondary signal, and first signal is launched simultaneously through the microwave antenna Its echo is received, and is exported after the secondary signal and the echo are nursed one's health through row's pin to external system.
- A kind of 2. water film thickness sensor according to claim 1, it is characterised in that：The electronic device includes：Microwave Generation module, power distribution module, transceiver module, power phases detection module and input and output protection module；Module occurs for the microwave will be described micro- by microwave signal transmission to the power distribution module, the power distribution module Ripple signal is divided into first signal and the secondary signal；The transceiver module can pass through first signal described micro- The echo for first signal that wave antenna is launched and received is transmitted to the power phases detection module；The work( Rate phase detecting module can be transmitted the secondary signal and the echo to outside by the input and output protection module System.
- A kind of 3. water film thickness sensor according to claim 2, it is characterised in that：Screen is additionally provided with the circuit board Cover is covered, the electronic device is arranged in the radome.
- A kind of 4. water film thickness sensor according to claim 2, it is characterised in that：Also include power amplifier module, institute Power amplifier module is stated to be connected between the transceiver module and microwave antenna.
- A kind of 5. water film thickness sensor according to claim 2, it is characterised in that：The input and output protection module tool There are electrostatic discharge protective circuit and voltage limiting circuit.
- A kind of 6. water film thickness sensor according to claim 2, it is characterised in that：Also include temperature self-compensation electricity Road, the output end of the temperature self-compensation circuit connect the microwave and module, power distribution module, transceiver module occur respectively With power phases detection module so as to realizing auto thermal compensation.
- A kind of 7. water film thickness sensor according to claim 1, it is characterised in that：It is voltage-controlled that module, which occurs, for the microwave Oscillator chip.
- A kind of 8. water film thickness sensor according to claim 1, it is characterised in that：The microwave antenna is using photoetching Corrode rectangular-shaped microstrip antenna made of hydrocarbon ceramic substrate.
- A kind of 9. water film thickness sensor according to claim 1, it is characterised in that：The microwave antenna has one to be used for The window of the circuit board feed.
- A kind of 10. water film thickness sensor according to claim 1, it is characterised in that：The spacing of row's pin is 2.54mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720761322.7U CN206944956U (en) | 2017-06-28 | 2017-06-28 | A kind of water film thickness sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720761322.7U CN206944956U (en) | 2017-06-28 | 2017-06-28 | A kind of water film thickness sensor |
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| Publication Number | Publication Date |
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| CN206944956U true CN206944956U (en) | 2018-01-30 |
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| CN201720761322.7U Active CN206944956U (en) | 2017-06-28 | 2017-06-28 | A kind of water film thickness sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084691A (en) * | 2017-06-28 | 2017-08-22 | 苏州曼德克光电有限公司 | A kind of water film thickness sensor |
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2017
- 2017-06-28 CN CN201720761322.7U patent/CN206944956U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084691A (en) * | 2017-06-28 | 2017-08-22 | 苏州曼德克光电有限公司 | A kind of water film thickness sensor |
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