CN211043192U - High-precision intelligent microwave water content sensor - Google Patents
High-precision intelligent microwave water content sensor Download PDFInfo
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- CN211043192U CN211043192U CN201921396944.XU CN201921396944U CN211043192U CN 211043192 U CN211043192 U CN 211043192U CN 201921396944 U CN201921396944 U CN 201921396944U CN 211043192 U CN211043192 U CN 211043192U
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Abstract
The utility model provides a high accuracy intelligence microwave moisture content sensor, a serial communication port, include: the microwave antenna comprises a microwave sending module, a microwave antenna module, a radio frequency power detection module and a central processing unit; the microwave transmitting module is connected with the microwave antenna module, the radio frequency power detection module is connected with the microwave antenna module, and the central processing unit is connected with the radio frequency power detection module. The utility model discloses a microwave method carries out the test of moisture content, and measuring result receives the interference little, and the rate of accuracy is high, and this device has still add functions such as temperature compensation, calculation moisturizing volume, and the cost is lower, easy operation.
Description
Technical Field
The utility model belongs to the moisture measurement field, concretely relates to high accuracy intelligence microwave moisture content sensor.
Background
Through the development of water content measuring technology at home and abroad for many years, various on-line measuring methods such as a resistance method, a capacitance method, an infrared method, a neutron method, a microwave method and the like are researched. Each method, other than the microwave method, whether resistive, capacitive, infrared, and nuclear, has particular problems.
(1) Resistance, this technique is prone to error because water does not act as a uniform conductor. For example, distilled water is not conductive, while salt water is conductive. Thus, this technique is severely affected by any contaminants in the water.
(2) Capacitive, which is the more common method of humidity measurement, but it is still affected by contaminants in the water. In addition, its effective operating humidity range is very limited.
(3) Infrared, which is a relatively common method of measuring moisture, provides only a surface measurement and is not representative of the total moisture in the product, since it is a reflective technique. This technique is very costly, requires special calibration equipment, and is environmentally sound and free of dust or moisture.
(4) The neutron method and the nuclear humidity measurement technology provide an accurate humidity control method. However, this technique is not suitable for many industries, can be very costly, and also requires large amounts of material to accurately measure.
Compared with the water content measuring method, the microwave method is minimally influenced by impurities, color, granularity or temperature and is absolutely safe, so that the microwave method is the most widely applied method at home and abroad at present. Microwave measurement technology now goes through two phases, from earlier analog measurement technology to present digital measurement technology. Digital measurement techniques are more accurate and intuitive than analog measurement techniques, are easier to operate and apply, and have gradually replaced products that employ analog measurement techniques. However, the existing digital microwave moisture content sensor still has the defects of low precision, incapability of meeting the requirement of actual field high-precision application, no moisture content automatic control function, high cost and inconvenience for users to use, and a large amount of additional control equipment is needed to control the moisture content.
SUMMERY OF THE UTILITY MODEL
Not enough to the above-mentioned of prior art, the utility model provides a high accuracy intelligence microwave moisture content sensor to solve above-mentioned technical problem.
The utility model provides a high accuracy intelligence microwave moisture content sensor, include: the microwave antenna comprises a microwave sending module, a microwave antenna module, a radio frequency power detection module and a central processing unit; the microwave transmitting module is connected with the microwave antenna module, the radio frequency power detection module is connected with the microwave antenna module, and the central processing unit is connected with the radio frequency power detection module.
The microwave transmitting module provides a high-stability microwave signal source for the high-precision intelligent microwave moisture content sensor, and the microwave antenna module is used for transmitting microwave signals to a material to be measured, receiving signals returned after measurement and transmitting the signals to the radio frequency power detection module; the radio frequency power detection module has a signal conversion function; the central processing unit is used as a core processor and can analyze the measuring signals and calculate the water content of the measured material.
Further, the sensor also comprises a temperature acquisition module, and the temperature acquisition module is connected with the central processing unit.
Further, the sensor also comprises a data storage module, and the temperature acquisition module is connected with the central processing unit.
Furthermore, the sensor also comprises an analog quantity output module, and the analog quantity output module is connected with the central processing unit.
Further, the sensor also comprises an RS485 communication module, and the RS485 communication module is connected with the central processing unit.
Further, the sensor also comprises a starting acquisition module, and the starting acquisition module is connected with the central processing unit.
The utility model has the advantages that,
the utility model provides a high accuracy intelligence microwave moisture content sensor adopts the basic principle of microwave wet measurement, combines computer communication technology and data storage technology, measures the moisture content of material comparatively accurately; the utility model has the temperature measuring function besides the basic humidity measuring function, can compensate the temperature of the measured material in a factory, and reduces the influence of the temperature change on the measuring result to the minimum, so that the moisture content measurement is more accurate; the output signal can be analog quantity (current or voltage quantity), and also has RS485 digital signal, when the output signal does not need to add other conversion devices, so that the use cost can be reduced; the method has a good signal processing function on interference signals, outputs stable signals and can provide a better information source; meanwhile, the water content control process parameters and the control method are built in, the water supplement amount reaching the proper water content can be calculated according to the process control parameters and the algorithm, and the operation and the application of a user are easier.
Furthermore, the utility model relates to a principle is reliable, and simple structure has very extensive application prospect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a sensor according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a sensor according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a sensor according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a sensor according to an embodiment of the present application;
wherein, 1, a microwave transmitting module; 2. a microwave antenna module; 3. a radio frequency power detection module; 4. a central processing unit; 5. a temperature acquisition module; 6. a data storage module; 7. starting an acquisition module; 8. an RS485 communication module; 9. and an analog quantity output module.
Detailed Description
In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example 1
As shown in fig. 1, the embodiment of the present application provides a high accuracy intelligence microwave moisture content sensor, includes: the microwave antenna comprises a microwave sending module 1, a microwave antenna module 2, a radio frequency power detection module 3 and a central processing unit 4; the microwave transmitting module is connected with the microwave antenna module, the radio frequency power detection module is connected with the microwave antenna module, and the central processing unit is connected with the radio frequency power detection module.
The microwave transmitting module 1 transmits a microwave signal source providing high stability, and transmits high-frequency microwaves to the material to be measured containing moisture through the microwave antenna module 2. After the high-frequency microwave passes through the material to be measured containing moisture, the phase shift and attenuation of the high-frequency microwave are obviously increased, and the microwave antenna module 2 simultaneously receives the signal returned by the high-frequency microwave, including power attenuation A and phase change
And the resonant frequency and the like, and the signals are transmitted to the radio frequency power detection module 3 for signal conversion, the converted signals are transmitted to the central processing unit 4, and the central processing unit 4 starts to analyze and calculate the water content of the measured material.
Example 2
As shown in fig. 2, the present embodiment provides a high-precision intelligent microwave moisture content sensor, which includes: the microwave power detection system comprises a microwave sending module 1, a microwave antenna module 2, a radio frequency power detection module 3, a central processing unit 4 and a temperature acquisition module 5; the microwave transmitting module 1 is connected with the microwave antenna module 2, the radio frequency power detection module 3 is connected with the microwave antenna module 2, the central processing unit 4 is connected with the radio frequency power detection module 3, and the temperature acquisition module 5 is connected with the central processing unit 4.
This embodiment has increased the temperature compensation function on embodiment 1's basis, and temperature acquisition module 5 gathers the temperature data of measured object material and sends for central processing unit 4, and central processing unit 4 carries out temperature compensation according to particular case when calculating the moisture content of measured object material, and it is minimum to receive temperature variation's influence with the measuring result, makes the moisture content measure more accurate.
Example 3
As shown in fig. 3, the present embodiment provides a high-precision intelligent microwave moisture content sensor, which includes: the system comprises a microwave sending module 1, a microwave antenna module 2, a radio frequency power detection module 3, a central processing unit 4, a temperature acquisition module 4, a data storage module 6 and a starting acquisition module 7; microwave sending module 1 is connected with microwave antenna module 2, radio frequency power detection module 3 is connected with microwave antenna module 2, central processing unit 4 is connected with radio frequency power detection module 3, temperature acquisition module 5, data storage module 6 and start acquisition module 7 all are connected with central processing unit 4.
In this embodiment, a data storage module 6 and a start acquisition module 7 are added on the basis of embodiment 2, the data storage module 6 stores control process parameters and control methods of water contents of different materials, and a central processing unit 4 reads related parameters and methods to calculate a water supplement amount reaching a proper water content, so that a user can conveniently perform related drying or moisturizing work on a measured material; the starting collection module 7 is started, and the central processing unit 4 calculates the average value of the water content of the same material in different occasions.
Example 4
As shown in fig. 4, the present embodiment provides a high-precision intelligent microwave moisture content sensor, which includes: the system comprises a microwave sending module 1, a microwave antenna module 2, a radio frequency power detection module 3, a central processing unit 4, a temperature acquisition module 5, a data storage module 6, a starting acquisition module 7, an RS485 communication module 8 and an analog quantity output module 9; microwave sending module 1 is connected with microwave antenna module 2, radio frequency power detection module 3 is connected with microwave antenna module 2, central processing unit 4 is connected with radio frequency power detection module 3, temperature acquisition module 5, data storage module 6, start acquisition module 7, RS485 communication module 8 and analog output module 9 all are connected with central processing unit 4.
In the embodiment, a signal output function is added on the basis of the embodiment 3, the output signal comprises a digital signal and an analog signal, the digital signal is output through the RS485 communication module 8, the analog signal is output through the analog output module 9, and other conversion devices are not required to be added during signal output, so that the use cost can be reduced; meanwhile, the RS485 communication module 8 has a good signal processing function on the interference signal, the output signal is stable, and a better information source can be provided.
Although the present invention has been described in detail by referring to the drawings in conjunction with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and substance of the present invention, and these modifications or substitutions are intended to be within the scope of the present invention/any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. The utility model provides a high accuracy intelligence microwave moisture content sensor which characterized in that includes: the microwave antenna comprises a microwave sending module, a microwave antenna module, a radio frequency power detection module and a central processing unit; the microwave transmitting module is connected with the microwave antenna module, the radio frequency power detection module is connected with the microwave antenna module, and the central processing unit is connected with the radio frequency power detection module.
2. The high-precision intelligent microwave water content sensor according to claim 1, further comprising a temperature acquisition module, wherein the temperature acquisition module is connected with the central processing unit.
3. The high-precision intelligent microwave water content sensor according to claim 1, further comprising a data storage module, wherein the data storage module is connected with the central processing unit.
4. The high-precision intelligent microwave water content sensor according to claim 1, further comprising an analog output module, wherein the analog output module is connected with the central processing unit.
5. The high-precision intelligent microwave water content sensor according to claim 1, further comprising an RS485 communication module, wherein the RS485 communication module is connected with the central processing unit.
6. The high-precision intelligent microwave water content sensor according to claim 1, further comprising a starting acquisition module, wherein the starting acquisition module is connected with the central processing unit.
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| CN201921396944.XU CN211043192U (en) | 2019-08-26 | 2019-08-26 | High-precision intelligent microwave water content sensor |
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| CN201921396944.XU CN211043192U (en) | 2019-08-26 | 2019-08-26 | High-precision intelligent microwave water content sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112748131A (en) * | 2020-12-23 | 2021-05-04 | 中山艾尚智同信息科技有限公司 | Method for detecting aggregate moisture content based on microwave principle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112748131A (en) * | 2020-12-23 | 2021-05-04 | 中山艾尚智同信息科技有限公司 | Method for detecting aggregate moisture content based on microwave principle |
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