CN116399420A - 80G frequency modulation radar water gauge - Google Patents
80G frequency modulation radar water gauge Download PDFInfo
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- CN116399420A CN116399420A CN202310396828.2A CN202310396828A CN116399420A CN 116399420 A CN116399420 A CN 116399420A CN 202310396828 A CN202310396828 A CN 202310396828A CN 116399420 A CN116399420 A CN 116399420A
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- power supply
- stm32l496
- singlechip
- signal acquisition
- antenna
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 230000007175 bidirectional communication Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims 4
- 238000005259 measurement Methods 0.000 abstract description 5
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 230000003313 weakening effect Effects 0.000 abstract description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006854 communication Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002592 echocardiography Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/284—Electromagnetic waves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The invention discloses an 80G frequency modulation radar water level gauge, which comprises a power supply part, a signal acquisition and processing part and an antenna transmitting and receiving part, wherein the power supply part advances voltage and current for the signal acquisition and processing part and the antenna transmitting and receiving part and outputs RS485 digital signals outwards, the antenna transmitting and receiving part transmits millimeter waves of 77-81 GHz wave bands outwards in an array direction and controls an electromagnetic transmitting angle within 6 degrees, and the signal acquisition and processing part converts the distance between an antenna and a liquid level by calculating a low-frequency signal transmitted by an 80G transceiver and converts the distance into RS485 digital signals to be sent out. The 80G frequency modulation radar water level gauge has narrow wave and penetrating capacity, and can adapt to complex working conditions without weakening measurement performance.
Description
Technical Field
The invention relates to the technical field of radio antennas, in particular to an 80G frequency modulation radar water level gauge.
Background
The radar water level gauge is a hydrological instrument for realizing water level measurement by adopting a radar technology, is not influenced by temperature gradient, water flow velocity, pollutants in water and sediments during measurement, has the characteristic of complete non-contact, is higher than a mechanical or pressure water level gauge in precision, and has application requirements when a water level well is inconvenient to construct and high-precision data is needed.
Accurate detection of water level can effectively assist water conservancy departments to monitor water level change states, provide accurate water level information for detection units, and provide important reference information for flood control or drought resistance. On the other hand, large-scale steel plants and metallurgical plants need to accurately measure the liquid level of the smelting furnace, so that accurate reference is provided for blanking, and the waste of resources is avoided.
At present, other 80G frequency modulation radars can only achieve 70GHz, the signal value of the frequency modulation radars on the market is 60db, a compact radio frequency structure does not achieve higher signal to noise ratio, no unique advantage exists in severe temperature and outdoor environment, most of the frequency modulation radars still use a linear polarization antenna scheme, and an array antenna scheme is adopted.
Disclosure of Invention
The invention aims to provide an 80G frequency modulation radar water gauge so as to solve the problems in the background art.
In order to achieve the purpose, the invention provides an 80G frequency modulation radar water level gauge, which comprises a power supply part, a signal acquisition and processing part and an antenna transmitting and receiving part, wherein the power supply part advances voltage and current for the signal acquisition and processing part and the antenna transmitting and receiving part and outputs RS485 digital signals outwards, the antenna transmitting and receiving part transmits millimeter waves of 77-81 GHz wave bands outwards in an array direction and controls an electromagnetic transmitting angle to be within 6 degrees, and the signal acquisition and processing part converts the distance from an antenna to a liquid level by calculating a low-frequency signal transmitted by an 80G transceiver and converts the distance into RS485 digital signals to be sent out.
Preferably, the power supply part inputs 9-36V voltage, the output end of the power supply part is connected with an LMR16030 stabilized power supply, the output end of the LMR16030 stabilized power supply is connected with the signal acquisition processing part and the antenna transmitting part, the output end of the LMR16030 stabilized power supply is connected with an STM32L496 singlechip, and two branches of the LMR16030 stabilized power supply, the output end of which is connected with an RC7701N32 radar millimeter wave transceiver chip, are provided with linear voltage regulators.
Preferably, the antenna transmitting and receiving part comprises an RC7701N32 millimeter wave transceiver chip, the RC7701N32 millimeter wave transceiver chip and the STM32L496 singlechip are in bidirectional communication through SPI, the input end of the RC7701N32 millimeter wave transceiver chip is connected into two parallel branches of the LMR16030 stabilized voltage supply, and the output end of the RC7701N32 millimeter wave transceiver chip is connected with the STM32L496 singlechip.
Preferably, the alloy comprises the following components in percentage by mass: the antenna signal acquisition processing part transmits intermediate frequency signals to an STM32L496 singlechip through an RC7701N32 radar millimeter wave transceiver chip, the STM32L496 singlechip is connected with an SN65HV75DR485 transceiver, and the SN65HV75DR485 transceiver is connected with a 485 output interface.
Preferably, the alloy comprises the following components in percentage by mass: the STM32L496 singlechip is connected with the TMP112AIDRLR digital temperature sensor in two directions.
Preferably, the LCD display screen is connected with the STM32L496 singlechip in a two-way mode.
Therefore, the 80G frequency modulation radar water level gauge adopting the structure has narrow wave and penetrating capacity, and can be more suitable for complex working conditions without weakening measurement performance.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a schematic diagram of the connection of the elements of an 80G FM radar level gauge according to the present invention.
Detailed Description
The technical scheme of the invention is further described below through the attached drawings and the embodiments.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
The invention provides an 80G frequency modulation radar water level gauge, which comprises a power supply part, a signal acquisition and processing part and an antenna transmitting and receiving part, wherein the power supply part is used for advancing voltage and current of the signal acquisition and processing part and the antenna transmitting and receiving part and outputting RS485 digital signals outwards, the power supply part inputs 9-36V voltage, the output end of the power supply part is connected with an LMR16030 stabilized voltage supply, the output end of the LMR16030 stabilized voltage supply is connected with the signal acquisition and processing part and the antenna transmitting part, the output end of the LMR16030 stabilized voltage supply is connected with an STM32L496 singlechip, two branches of the LMR16030 stabilized voltage supply output end connected with an RC7701N32 radar millimeter wave transceiver chip are provided with linear voltage stabilizers, the RC7701N32 radar millimeter wave transceiver chip is used for measuring the distance of liquid, and the received signals are transmitted to the STM32L496 singlechip for calculation.
The LCD display screen is connected with the STM32L496 singlechip in a two-way. The antenna transmitting and receiving part externally transmits millimeter waves of 77-81 GHz wave bands in an array direction, and the electromagnetic transmitting angle is controlled within 6 degrees.
The antenna transmitting and receiving part comprises an RC7701N32 millimeter wave transceiver chip, the RC7701N32 millimeter wave transceiver chip and the STM32L496 singlechip are in bidirectional communication through SPI, the input end of the RC7701N32 millimeter wave transceiver chip is connected with two parallel branches of the LMR16030 stabilized voltage supply, and the output end of the RC7701N32 millimeter wave transceiver chip is connected with the STM32L496 singlechip.
The signal acquisition processing part converts the low-frequency signal transmitted by the 80G transceiver into the distance from the antenna to the liquid level, and converts the distance into an RS485 digital signal to be sent out.
The antenna signal acquisition processing part transmits intermediate frequency signals to the STM32L496 singlechip through the RC7701N32 radar millimeter wave transceiver chip, the STM32L496 singlechip is connected with the SN65HV75DR485 transceiver, the SN65HV75DR is the 485 transceiver for transmission 485 communication, and the SN65HV75DR485 transceiver is connected with a 485 output interface.
The STM32L496 singlechip is connected with the TMP112AIDRLR digital temperature sensor in a two-way, detects the temperature of the system, and the STM32L496 singlechip is provided with an ultra-low power consumption MCU for signal acquisition, calculation and system control.
Working principle: the 80G water level meter utilizes RC7701N32 to emit ultrahigh frequency electromagnetic waves to the liquid level of a detected container through an antenna, when the electromagnetic waves are reflected back after touching the liquid level, the time difference between the emitted waves and the echoes is detected through STM32L496, so that the height of the liquid level is calculated, and the liquid level is transmitted to an upper computer through 485.
Therefore, the 80G frequency modulation radar water level gauge adopting the structure has narrow wave and penetrating capacity, and can be more suitable for complex working conditions without weakening measurement performance.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting it, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that: the technical scheme of the invention can be modified or replaced by the same, and the modified technical scheme cannot deviate from the spirit and scope of the technical scheme of the invention.
Claims (6)
1. An 80G frequency modulation radar water gauge, characterized in that: the device comprises a power supply part, a signal acquisition and processing part and an antenna transmitting and receiving part, wherein the power supply part advances voltage and current for the signal acquisition and processing part and the antenna transmitting and receiving part and outputs RS485 digital signals outwards, the antenna transmitting and receiving part transmits millimeter waves of 77-81 GHz wave bands outwards in an array direction and controls an electromagnetic transmitting angle within 6 degrees, and the signal acquisition and processing part converts the distance from the antenna to the liquid level and converts the distance into RS485 digital signals to be sent out through calculating low-frequency signals transmitted by an 80G transceiver.
2. An 80G fm radar level gauge according to claim 1, wherein: the power supply part inputs 9-36V voltage, and its output is connected with LMR16030 regulated power supply, LMR16030 regulated power supply's output is connected signal acquisition processing part and antenna emission part, LMR16030 regulated power supply output is connected STM32L496 singlechip, two branch roads that LMR16030 regulated power supply output is connected RC7701N32 radar millimeter wave transceiver chip are equipped with linear voltage regulator.
3. An 80G fm radar level gauge according to claim 1, wherein: the antenna transmitting and receiving part comprises an RC7701N32 millimeter wave transceiver chip, the RC7701N32 millimeter wave transceiver chip and an STM32L496 singlechip are in bidirectional communication through SPI, the input end of the RC7701N32 millimeter wave transceiver chip is connected with two parallel branches of an LMR16030 stabilized voltage supply, and the output end of the RC7701N32 millimeter wave transceiver chip is connected with the STM32L496 singlechip.
4. An 80G fm radar level gauge according to claim 1, wherein: the antenna signal acquisition processing part transmits intermediate frequency signals to an STM32L496 singlechip through an RC7701N32 radar millimeter wave transceiver chip, the STM32L496 singlechip is connected with an SN65HV75DR485 transceiver, and the SN65HV75DR485 transceiver is connected with a 485 output interface.
5. An 80G fm radar level gauge according to claim 1, wherein: the STM32L496 singlechip is connected with the TMP112AIDRLR digital temperature sensor in two directions.
6. An 80G fm radar level gauge according to claim 1, wherein: the LCD display screen is connected with the STM32L496 singlechip in a two-way mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310396828.2A CN116399420A (en) | 2023-04-14 | 2023-04-14 | 80G frequency modulation radar water gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310396828.2A CN116399420A (en) | 2023-04-14 | 2023-04-14 | 80G frequency modulation radar water gauge |
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| Publication Number | Publication Date |
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| CN116399420A true CN116399420A (en) | 2023-07-07 |
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| CN202310396828.2A Pending CN116399420A (en) | 2023-04-14 | 2023-04-14 | 80G frequency modulation radar water gauge |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211954331U (en) * | 2020-06-01 | 2020-11-17 | 深圳市佰誉达科技有限公司 | Liquid level measuring system |
| CN112346042A (en) * | 2020-12-10 | 2021-02-09 | 麦堆微电子技术（上海）有限公司 | Ka frequency range millimeter wave radar altimeter |
| CN213091879U (en) * | 2020-07-16 | 2021-04-30 | 北京航空航天大学杭州创新研究院 | 77GHz millimeter wave banister prevents pounding radar installation |
| CN115540972A (en) * | 2022-09-22 | 2022-12-30 | 江苏新晖测控科技有限公司 | Low-power-consumption liquid level meter based on millimeter wave radar detection and low-power-consumption operation method thereof |
| CN115711656A (en) * | 2022-10-19 | 2023-02-24 | 北京凌波微步信息技术有限公司 | Novel frequency modulation continuous wave radar level meter |
-
2023
- 2023-04-14 CN CN202310396828.2A patent/CN116399420A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211954331U (en) * | 2020-06-01 | 2020-11-17 | 深圳市佰誉达科技有限公司 | Liquid level measuring system |
| CN213091879U (en) * | 2020-07-16 | 2021-04-30 | 北京航空航天大学杭州创新研究院 | 77GHz millimeter wave banister prevents pounding radar installation |
| CN112346042A (en) * | 2020-12-10 | 2021-02-09 | 麦堆微电子技术（上海）有限公司 | Ka frequency range millimeter wave radar altimeter |
| CN115540972A (en) * | 2022-09-22 | 2022-12-30 | 江苏新晖测控科技有限公司 | Low-power-consumption liquid level meter based on millimeter wave radar detection and low-power-consumption operation method thereof |
| CN115711656A (en) * | 2022-10-19 | 2023-02-24 | 北京凌波微步信息技术有限公司 | Novel frequency modulation continuous wave radar level meter |
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