CN212059966U - Double-antenna reflection type microwave moisture sensor - Google Patents
Double-antenna reflection type microwave moisture sensor Download PDFInfo
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- CN212059966U CN212059966U CN202020539402.XU CN202020539402U CN212059966U CN 212059966 U CN212059966 U CN 212059966U CN 202020539402 U CN202020539402 U CN 202020539402U CN 212059966 U CN212059966 U CN 212059966U
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Abstract
The utility model relates to a double-antenna reflection type microwave moisture sensor, which comprises a transmitting microwave antenna, a receiving microwave antenna and a signal conditioning circuit. The transmitting microwave antenna and the receiving microwave antenna form an included angle of 30 degrees. The microwave is emitted from the microwave emitting antenna, and is emitted to the object to be tested via the microwave emitting antenna, part of the microwave is reflected, the reflected part of the microwave is received by the microwave receiving antenna and converted into voltage signal, and the voltage signal is related to the water content of the object to be tested and amplified and shaped via the signal conditioning circuit to obtain the voltage value related to the water content for water detection.
Description
Technical Field
The utility model relates to a detection device, concretely relates to double antenna reflection type microwave moisture sensor.
Background
Microwave moisture sensors are available in the market, which use a transmission mode to detect the moisture content of materials transported on a conveyor belt. The transmitting sensor is arranged below the conveyor belt, and the receiving sensor is arranged below the conveyor belt. The water content of the material between the transmitting sensor and the receiving sensor is judged by detecting the microwave power received by the receiving sensor. This causes three problems: 1. when installing, the transmitting sensor and the receiving sensor must be aligned, and the installation process is very challenging. And 2, the transmitting sensor placed below the transmission belt is easy to accumulate dust and shield microwaves, frequent cleaning is required, and the maintenance workload is greatly increased. 3. Two microwave sensors are manufactured, which greatly increases the cost.
Disclosure of Invention
The utility model provides a two antenna reflection formula microwave moisture sensor.
The utility model discloses a realize through following technical scheme: the sensor comprises a transmitting microwave antenna, a receiving microwave antenna and a signal conditioning circuit. The transmitting microwave antenna and the receiving microwave antenna form an included angle of 30 degrees.
The microwave antenna adopts a horn antenna and is used for controlling the transmitting angle and the receiving angle of the microwave.
The transmitting microwave antenna emits microwave, which is reflected to the object to be measured, and the reflected microwave is received by the receiving microwave antenna and converted into voltage signal, which is related to the water content of the object to be measured.
The signal conditioning circuit amplifies and shapes the reflected microwave signal to obtain a voltage value related to the moisture content, and moisture detection is realized.
The utility model has the advantages that: by adopting the double-antenna reflection type microwave moisture sensor, the manufacturing cost and the installation cost are saved, and the double-antenna reflection type microwave moisture sensor is basically maintenance-free in the using process.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
1 transmitting microwave antenna, 2 receiving microwave antenna and 3 signal conditioning circuit.
Detailed Description
Referring to fig. 1, a transmitting microwave antenna 1 and a receiving microwave antenna 2 form an angle of 30 degrees therebetween. The signal conditioning circuit 3 is fixed on the receiving microwave antenna 2 to form a double-antenna reflection type microwave water sensor whole body.
Firstly, the transmitting microwave antenna 1 emits microwave, and emits the microwave to the object to be detected, partial microwave is reflected, the reflected partial microwave is received by the receiving microwave antenna 2, and converted into voltage signal, said signal is related to water content of the object to be detected, and amplified and shaped by means of signal conditioning circuit 3 so as to obtain the voltage value related to water content, and can implement water content detection.
The specific embodiments are provided to illustrate the invention, but not to limit the scope of the invention. Various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the invention, and all equivalent technical solutions also fall within the scope of the invention, which is defined by the claims.
Claims (2)
1. A double-antenna reflection type microwave moisture sensor is characterized in that: the sensor comprises a transmitting microwave antenna, a receiving microwave antenna and a signal conditioning circuit.
2. The dual antenna reflective microwave moisture sensor of claim 1, wherein: the transmitting microwave antenna and the receiving microwave antenna form an included angle of 30 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020539402.XU CN212059966U (en) | 2020-04-14 | 2020-04-14 | Double-antenna reflection type microwave moisture sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020539402.XU CN212059966U (en) | 2020-04-14 | 2020-04-14 | Double-antenna reflection type microwave moisture sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212059966U true CN212059966U (en) | 2020-12-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020539402.XU Active CN212059966U (en) | 2020-04-14 | 2020-04-14 | Double-antenna reflection type microwave moisture sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212059966U (en) |
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2020
- 2020-04-14 CN CN202020539402.XU patent/CN212059966U/en active Active
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