CN205102883U - Novel radar fluviograph - Google Patents
Novel radar fluviograph Download PDFInfo
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- CN205102883U CN205102883U CN201520752586.7U CN201520752586U CN205102883U CN 205102883 U CN205102883 U CN 205102883U CN 201520752586 U CN201520752586 U CN 201520752586U CN 205102883 U CN205102883 U CN 205102883U
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Abstract
The utility model relates to a thing position, water level detecting instrument technical field especially relate to a novel radar fluviograph, including solar cell system, lightning protection module, radio frequency front end system, signal processing system and wireless data transmission system. The radio frequency front end system includes voltage controlled oscillator, power distribution unit, emit antenna, first detector and receiving antenna, signal processing system includes temperature sensor, memory, signal processor, digital analog converter, adc, filter amplifier 1 and filter amplifier 2. The utility model discloses a novel radar fluviograph utilizes temperature compensating technique, transmission signal and echo signal's transform of difference frequency FFT and frequency spectrum to refine the technique, has solved the range ambiguity that pulse radar exists betterly, and closely the range accuracy is not high, contradictory scheduling problem between FFT's frequency resolution and the amount of calculation.
Description
Technical field
The utility model relates to a kind of thing position, water-level detecting instrument technical field, particularly relates to a kind of New Type Radar water-level gauge.
Background technology
Water level detects accurately can assist hydraulic department level monitoring variable condition effectively, for detect unit water level information is accurately provided, and for flood control or drought resisting important reference information is provided.On the other hand, large-scale steelworks, Metallurgical Factory etc. need to measure accurately the liquid level of smelting furnace, thus provide accurate reference for blanking, avoid the waste of resource.
Therefore, research can round-the-clock steady operation, and measurement result accurately and reliably, can be used for large reservoir, cistern, has the water level gauge in pollutant or sedimentary Complex Water Environment or material detection instrument to have important market application foreground.
Summary of the invention
For solving above-mentioned technical matters, the utility model proposes a kind of New Type Radar water-level gauge.
A kind of New Type Radar water-level gauge described in the utility model, comprises solar cell system, lightning-protection module, radio-frequency front-end system, signal processing system and wireless system for transmitting data, described radio-frequency front-end system comprises voltage controlled oscillator, power divider, emitting antenna, frequency mixer and receiving antenna, described signal processing system comprises temperature sensor, storer, signal processor, digital to analog converter, analog to digital converter, filter amplifier one and filter amplifier two, described lightning-protection module is connected with solar cell system, and lightning-protection module proterctive equipment is not damaged at severe thunderstorm weather, and described solar cell system is respectively and radio-frequency front-end system, signal processing system, wireless system for transmitting data is connected, and solar cell system provides the energy for whole system, and described signal processor is connected with wireless system for transmitting data, receives the control information of care provider and uploads water level information, and described signal processor also and temperature sensor, storer is connected, and according to the list data in the temperature value of temperature sensor measurement and the storer of reading, carry out nonlinear compensation to voltage controlled oscillator, described signal processor is also connected with digital to analog converter, described digital to analog converter is connected with filter amplifier one, described filter amplifier one is connected with voltage controlled oscillator, described voltage controlled oscillator is connected with power divider, the digital signal of signal processor is converted to linear FM signal and inputs to power divider by voltage controlled oscillator, described power divider is connected with emitting antenna, tested liquid level is given by antenna transmission by linear FM signal, described power divider is also connected with frequency mixer, described frequency mixer is connected with receiving antenna, the difference frequency signal obtaining representing distance after a part of emissive power signal mixing of the echoed signal that receiving antenna receives and power divider output inputs to filter amplifier two, described frequency mixer is connected with filter amplifier two, the difference frequency signal of frequency mixer is inputed to filter amplifier two filtering, described analog to digital converter is connected with filter amplifier two, filtered difference frequency signal is inputed to analog to digital converter by filter amplifier two, described analog to digital converter is connected with signal processor, signal processor obtains liquid level information after processing difference frequency signal.
Principle of work: signal processor is first from the digital saw-tooth wave datum that storer reads, then digital to analog converter is given after temperature compensation and non-linear interpolation being carried out to sawtooth wave data according to the temperature of temperature sensor measurement, after digital saw-tooth wave datum is converted to analog-modulated voltage by digital to analog converter, be added to voltage controlled oscillator after filtering after amplifier one filter and amplification and control the linear frequency modulation continuous wave signal that it produces constant amplitude, the object of temperature compensation and non-linear interpolation is the non-linear of the analog devices such as compensated voltage controlled oscillator, make the linear degree of the linear frequency modulation continuous wave signal exported higher, thus raising measuring accuracy.The linear frequency modulation continuous wave signal that voltage controlled oscillator produces constant amplitude divides two-way through power divider, and a route transmission antennas transmit gives tested liquid level, and another road enters frequency mixer as local oscillation signal.Receiving antenna receive tested liquid level reflection echoed signal after input mixer, what frequency mixer exported transmit and the difference frequency signal of echoed signal amplify two after filtering after input to after analog to digital converter is converted to digital difference frequency signal and give signal processor, after the maximal value that signal processor finds spectrum amplitude after carrying out FFT process to difference frequency signal and second largest value, then obtain accurate water level information after the frequency spectrum near maximal value is segmented.Water level information can store in memory, and care provider sends control command by wireless system for transmitting data to signal processor, and signal processor uploads water level information after receiving order in real time.
A kind of New Type Radar water-level gauge of the present utility model, in conjunction with technique for temperature compensation, transmit and echoed signal difference frequency FFT convert and frequency spectrum refinement technology, wireless communication technology, solve the range ambiguity that pulsed radar exists preferably, closely distance accuracy is not high, contradiction between the frequency resolution of FFT and calculated amount, data such as to upload at a distance in real time at the problem.
Accompanying drawing explanation
The structured flowchart 1 of a kind of New Type Radar water-level gauge of Fig. 1: comprise solar cell system, lightning-protection module, radio-frequency front-end system, GPRS wireless transmitting system and signal processing system.Described radio-frequency front-end system comprises 11636C power divider, emitting antenna, voltage controlled oscillator, HMC524 frequency mixer and receiving antenna; Described signal processing system comprises filter amplifier THS4141 (1), filter amplifier THS4141 (2), AD9460, AD9764, Virtex-6FPGA, DS18B20 temperature sensor and CYTC1021V storer.
The structured flowchart 2 of a kind of New Type Radar water-level gauge of Fig. 2: comprise solar cell system, ANSUN lightning protection device, radio-frequency front-end system, 3G wireless transmitting system and signal processing system.Described radio-frequency front-end system comprises CCT-FLT-2-2500S power splitter, emitting antenna, voltage controlled oscillator, frequency mixer and receiving antenna; Described signal processing system comprises filter amplifier one, filter amplifier two, ADS820, DAC1210, DSP6670, WR thermocouple temperature sensor and MicroSD card.
Embodiment
Below in conjunction with specific embodiment, New Type Radar water-level gauge described in the utility model is described further, but protection domain of the present utility model is not limited to this.
Embodiment 1
As shown in Figure 1, a kind of New Type Radar water-level gauge described in the utility model, comprises solar cell system, lightning-protection module, radio-frequency front-end system, GPRS wireless transmitting system and signal processing system.Described radio-frequency front-end system comprises 11636C power divider, emitting antenna, voltage controlled oscillator, HMC524 frequency mixer and receiving antenna; Described signal processing system comprises filter amplifier THS4141 (1), filter amplifier THS4141 (2), AD9460, AD9764, Virtex-6FPGA, DS18B20 temperature sensor and CYTC1021V storer.Described lightning-protection module is connected with solar cell system, and lightning-protection module proterctive equipment is not damaged at severe thunderstorm weather.Described solar cell system is connected with radio-frequency front-end system, signal processing system, GPRS wireless transmitting system respectively, and solar cell system provides the energy for whole system.Described Virtex-6FPGA with GPRS wireless transmitting system is connected, and receives the control information of care provider and uploads water level information.Described Virtex-6FPGA is also connected with DS18B20 temperature sensor, CYTC1021V storer, according to the list data in the temperature value of DS18B20 temperature sensor measurement and the CYTC1021V storer of reading, carries out nonlinear compensation to voltage controlled oscillator.Described Virtex-6FPGA is also connected with AD9460; Described AD9460 is connected with filter amplifier THS4141 (1).Described filter amplifier THS4141 (1) is connected with voltage controlled oscillator, described voltage controlled oscillator is connected with 11636C power divider, and the digital signal of Virtex-6FPGA is converted to linear FM signal and inputs to 11636C power divider by voltage controlled oscillator.Described 11636C power divider is connected with emitting antenna, gives tested liquid level by linear FM signal by antenna transmission.Described 11636C power divider is also connected with HMC524 frequency mixer, described HMC524 frequency mixer is connected with receiving antenna, and the difference frequency signal obtaining representing distance after a part of emissive power signal mixing of the echoed signal that receiving antenna receives and the output of 11636C power divider inputs to filter amplifier THS4141 (2).Described HMC524 frequency mixer is connected with filter amplifier THS4141 (2), the difference frequency signal of HMC524 frequency mixer is inputed to filter amplifier THS4141 (2) filtering.Described AD9764 is connected with filter amplifier THS4141 (2), and filtered difference frequency signal is inputed to AD9764 by filter amplifier THS4141 (2).Described AD9764 with Virtex-6FPGA is connected, and Virtex-6FPGA obtains liquid level information after processing difference frequency signal.
Principle of work: Virtex-6FPGA is first from the digital saw-tooth wave datum that CYTC1021V storer reads, then AD9460 is given after temperature compensation and non-linear interpolation being carried out to sawtooth wave data according to the temperature of DS18B20 temperature sensor measurement, after digital saw-tooth wave datum is converted to analog-modulated voltage by AD9460, be added to voltage controlled oscillator after filtering after amplifier THS4141 (1) filter and amplification and control the linear frequency modulation continuous wave signal that it produces constant amplitude, the object of temperature compensation and non-linear interpolation is the non-linear of the analog devices such as compensated voltage controlled oscillator, make the linear degree of the linear frequency modulation continuous wave signal exported higher, thus raising measuring accuracy.The linear frequency modulation continuous wave signal that voltage controlled oscillator produces constant amplitude divides two-way through 11636C power divider, and a route transmission antennas transmit gives tested liquid level, and another road enters HMC524 frequency mixer as local oscillation signal.Receiving antenna inputs HMC524 frequency mixer after receiving the echoed signal of tested liquid level reflection, what HMC524 frequency mixer exported transmit and the difference frequency signal of echoed signal amplify THS4141 (2) after filtering after input to AD9764 and give Virtex-6FPGA after digital difference frequency signal, after the maximal value that Virtex-6FPGA finds spectrum amplitude after carrying out FFT process to difference frequency signal and second largest value, then obtain accurate water level information after the frequency spectrum near maximal value is segmented.Water level information can be stored in CYTC1021V storer, and care provider sends control command by GPRS wireless transmitting system to Virtex-6FPGA, and Virtex-6FPGA uploads water level information after receiving order in real time.
A kind of New Type Radar water-level gauge of the present utility model, in conjunction with technique for temperature compensation, transmit and echoed signal difference frequency FFT convert and frequency spectrum refinement technology, wireless communication technology, solve the range ambiguity that pulsed radar exists preferably, closely distance accuracy is not high, contradiction between the frequency resolution of FFT and calculated amount, data such as to upload at a distance in real time at the problem.
Embodiment 2
As shown in Figure 2, a kind of New Type Radar water-level gauge described in the utility model, comprises solar cell system, ANSUN lightning protection device, radio-frequency front-end system, 3G wireless transmitting system and signal processing system.Described radio-frequency front-end system comprises CCT-FLT-2-2500S power divider, emitting antenna, voltage controlled oscillator, frequency mixer and receiving antenna; Described signal processing system comprises filter amplifier one, filter amplifier two, ADS820, DAC1210, DSP6670, WR thermocouple temperature sensor and MicroSD card.Described ANSUN lightning protection device is connected with solar cell system, and ANSUN lightning protection device proterctive equipment is not damaged at severe thunderstorm weather.Described solar cell system is connected with radio-frequency front-end system, signal processing system, 3G wireless transmitting system respectively, and solar cell system provides the energy for whole system.Described DSP6670 with 3G wireless transmitting system is connected, and receives the control information of care provider and uploads water level information.Described DSP6670 is also connected with WR thermocouple temperature sensor, MicroSD card, according to the list data in the temperature value of WR thermocouple temperature sensor measurement and the MicroSD card of reading, carries out nonlinear compensation to voltage controlled oscillator.Described DSP6670 is also connected with ADS820; Described ADS820 is connected with filter amplifier one.Described filter amplifier one is connected with voltage controlled oscillator, and described voltage controlled oscillator is connected with CCT-FLT-2-2500S power divider, and the digital signal of DSP6670 is converted to linear FM signal and inputs to CCT-FLT-2-2500S power divider by voltage controlled oscillator.Described CCT-FLT-2-2500S power divider is connected with emitting antenna, gives tested liquid level by linear FM signal by antenna transmission.Described CCT-FLT-2-2500S power divider is also connected with frequency mixer, described frequency mixer is connected with receiving antenna, and the difference frequency signal obtaining representing distance after a part of emissive power signal mixing of the echoed signal that receiving antenna receives and the output of CCT-FLT-2-2500S power divider inputs to filter amplifier two.Described frequency mixer is connected with filter amplifier two, the difference frequency signal of frequency mixer is inputed to filter amplifier two filtering.Described DAC1210 is connected with filter amplifier two, and filtered difference frequency signal is inputed to DAC1210 by filter amplifier two.Described DAC1210 with DSP6670 is connected, and DSP6670 obtains liquid level information after processing difference frequency signal.
Principle of work: DSP6670 is first from the digital saw-tooth wave datum that MicroSD card reads, then ADS820 is given after the temperature measured according to WR thermocouple temperature sensor carries out temperature compensation and non-linear interpolation to sawtooth wave data, after digital saw-tooth wave datum is converted to analog-modulated voltage by ADS820, be added to voltage controlled oscillator after filtering after amplifier one filter and amplification and control the linear frequency modulation continuous wave signal that it produces constant amplitude, the object of temperature compensation and non-linear interpolation is the non-linear of the analog devices such as compensated voltage controlled oscillator, make the linear degree of the linear frequency modulation continuous wave signal exported higher, thus raising measuring accuracy.The linear frequency modulation continuous wave signal that voltage controlled oscillator produces constant amplitude divides two-way through CCT-FLT-2-2500S power divider, and a route transmission antennas transmit gives tested liquid level, and another road enters frequency mixer as local oscillation signal.Receiving antenna receive tested liquid level reflection echoed signal after input mixer, what frequency mixer exported transmit and the difference frequency signal of echoed signal inputs to DAC1210 after amplifier two after filtering and gives DSP6670 after digital difference frequency signal, after the maximal value that DSP6670 finds spectrum amplitude after carrying out FFT process to difference frequency signal and second largest value, then obtain accurate water level information after the frequency spectrum near maximal value is segmented.Water level information can be stored in MicroSD card, and care provider sends control command by 3G wireless transmitting system to DSP6670, and DSP6670 uploads water level information after receiving order in real time.
A kind of New Type Radar water-level gauge of the present utility model, in conjunction with technique for temperature compensation, transmit and echoed signal difference frequency FFT convert and frequency spectrum refinement technology, wireless communication technology, solve the range ambiguity that pulsed radar exists preferably, closely distance accuracy is not high, contradiction between the frequency resolution of FFT and calculated amount, data such as to upload at a distance in real time at the problem.
Claims (1)
1. a New Type Radar water-level gauge, comprises solar cell system, lightning-protection module, radio-frequency front-end system, signal processing system and wireless system for transmitting data, described radio-frequency front-end system comprises voltage controlled oscillator, power divider, emitting antenna, frequency mixer and receiving antenna, described signal processing system comprises temperature sensor, storer, signal processor, digital to analog converter, analog to digital converter, filter amplifier one and filter amplifier two, is characterized in that: described lightning-protection module is connected with solar cell system, and lightning-protection module proterctive equipment is not damaged at severe thunderstorm weather, and described solar cell system respectively and radio-frequency front-end system, signal processing system, wireless system for transmitting data is connected, and solar cell system provides the energy for whole system, and described signal processor is connected with wireless system for transmitting data, receives the control information of care provider and uploads water level information, and described signal processor also and temperature sensor, storer is connected, and according to the list data in the temperature value of temperature sensor measurement and the storer of reading, carry out nonlinear compensation to voltage controlled oscillator, described signal processor is also connected with digital to analog converter, described digital to analog converter is connected with filter amplifier one, described filter amplifier one is connected with voltage controlled oscillator, described voltage controlled oscillator is connected with power divider, the digital signal of signal processor is converted to linear FM signal and inputs to power divider by voltage controlled oscillator, described power divider is connected with emitting antenna, tested liquid level is given by antenna transmission by linear FM signal, described power divider is also connected with frequency mixer, described frequency mixer is connected with receiving antenna, the difference frequency signal obtaining representing distance after a part of emissive power signal mixing of the echoed signal that receiving antenna receives and power divider output inputs to filter amplifier two, described frequency mixer is connected with filter amplifier two, the difference frequency signal of frequency mixer is inputed to filter amplifier two filtering, described analog to digital converter is connected with filter amplifier two, filtered difference frequency signal is inputed to analog to digital converter by filter amplifier two, described analog to digital converter is connected with signal processor, signal processor obtains liquid level information after processing difference frequency signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520752586.7U CN205102883U (en) | 2015-09-28 | 2015-09-28 | Novel radar fluviograph |
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| CN201520752586.7U CN205102883U (en) | 2015-09-28 | 2015-09-28 | Novel radar fluviograph |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840310A (en) * | 2017-02-17 | 2017-06-13 | 水利部南京水利水文自动化研究所 | A kind of CW/FM continuous wave/frequency modulated modulated indicator water gage measuring method |
| CN109283519A (en) * | 2018-10-29 | 2019-01-29 | 湖南迈克森伟电子科技有限公司 | Based on LFMCW range-measurement system |
| CN111273709A (en) * | 2018-12-05 | 2020-06-12 | 锐迪科（重庆）微电子科技有限公司 | Temperature control device and method |
| CN111948640A (en) * | 2020-08-11 | 2020-11-17 | 厦门四信通信科技有限公司 | Water level and flow rate integrated measuring meter |
| CN112414511A (en) * | 2020-11-06 | 2021-02-26 | 浙江中控技术股份有限公司 | Radar level gauge |
| WO2021082030A1 (en) * | 2019-10-30 | 2021-05-06 | 北京锐达仪表有限公司 | Frequency-modulated continuous-wave radar level meter for measuring material level in container |
| CN113694302A (en) * | 2020-05-21 | 2021-11-26 | 广达电脑股份有限公司 | Intravenous injection detection device and method |
-
2015
- 2015-09-28 CN CN201520752586.7U patent/CN205102883U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840310A (en) * | 2017-02-17 | 2017-06-13 | 水利部南京水利水文自动化研究所 | A kind of CW/FM continuous wave/frequency modulated modulated indicator water gage measuring method |
| CN106840310B (en) * | 2017-02-17 | 2020-06-26 | 水利部南京水利水文自动化研究所 | Continuous frequency modulation wave radar level gauge measuring method |
| CN109283519A (en) * | 2018-10-29 | 2019-01-29 | 湖南迈克森伟电子科技有限公司 | Based on LFMCW range-measurement system |
| CN109283519B (en) * | 2018-10-29 | 2021-07-16 | 湖南迈克森伟电子科技有限公司 | Based on LFMCW ranging system |
| CN111273709A (en) * | 2018-12-05 | 2020-06-12 | 锐迪科（重庆）微电子科技有限公司 | Temperature control device and method |
| CN111273709B (en) * | 2018-12-05 | 2021-07-23 | 锐迪科（重庆）微电子科技有限公司 | Temperature control device and method |
| WO2021082030A1 (en) * | 2019-10-30 | 2021-05-06 | 北京锐达仪表有限公司 | Frequency-modulated continuous-wave radar level meter for measuring material level in container |
| CN113694302A (en) * | 2020-05-21 | 2021-11-26 | 广达电脑股份有限公司 | Intravenous injection detection device and method |
| CN111948640A (en) * | 2020-08-11 | 2020-11-17 | 厦门四信通信科技有限公司 | Water level and flow rate integrated measuring meter |
| CN112414511A (en) * | 2020-11-06 | 2021-02-26 | 浙江中控技术股份有限公司 | Radar level gauge |
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