CN1288147A - Microwave tide level sensor and use thereof - Google Patents
Microwave tide level sensor and use thereof Download PDFInfo
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Abstract
A microwave tide level sensor is composed of antenna, band-pass filter, circulator, coaxial-waveguide converter, voltage-controlled oscillator, frequency mixed, tide level signal processing unit, triangular signal generator and voltage-stabilized DC power supply. Its advantages include high working frequency, high anti-interference power, easy arrangement and high accuracy.
Description
The present invention relates to a kind of microwave tide level sensor and uses thereof, definitely say, relate to microwave tide level sensor of a kind of Ku of working in wave band and uses thereof, belong to microwave marine survey technology field.
Background technology is introduced.Jap.P.: the patent No. and title are respectively JP-09145366 and " Radio type tide level and wave height measuring apparatus (radio wave mode tidal level/wave height detection instrument) " discloses a kind of radio wave mode tidal level/wave height detection instrument.The tide level sensor part that is equivalent to of this instrument is made up of sending and receiving common antenna, transmitter and receiver.The advantage of background technology be the detection instrument that contains the sensor with antenna alignment under it mode on sea be installed on the support of ocean platform tidal level that can long-term real-time detection ocean.The shortcoming of background technology is that this instrument works in UHF wave band (3GHz), and frequency is low, is subject to the interference of radar signal; Antenna size as the sensor major part is big, and stent size is bigger, and inconvenience is installed; The tidal level measuring accuracy is not high, is about 6～10%.
First purpose of the present invention is to release the microwave tide level sensor of a kind of Ku of working in wave band (11GHz).The frequency of operation height makes this sensor can avoid the interference of satellite broadcasting and navar signal; Antenna is small and exquisite, makes this sensor be easy to install and tidal level measuring accuracy height.
Second purpose of the present invention is to release a kind of purposes of the sensor: this sensor and intelligent processing unit are formed high-precision microwave tide level instrument, this sensor with antenna alignment under it mode on sea be installed on the support of ocean platform, the tidal level of ocean is implemented long-term, safety and accurate real-time detection.
Description of drawings.Fig. 1 is the structured flowchart of microwave tide level sensor.Fig. 2 is the structural representation of antenna 10.Fig. 3 is triangular signal generator based 20 circuit diagram.Fig. 4 is the oscillogram of triangular signal.Fig. 5 is the schematic diagram that tidal signal forms.Fig. 6 is the circuit diagram of tidal signal processing unit 100.Fig. 7 is the structured flowchart of the microwave tide level instrument of microwave tide level sensor and intelligent processing unit 3 compositions.Fig. 8 is a microwave tide level instrument frame Yu Haiyang platform.
Existing accompanying drawings technology contents of the present invention.
First purpose of the present invention is by adopting lower array structure to be achieved. A kind of microwave tide Level sensor is characterized in that, it is made up of sensing unit 1 and power supply, control module 2, Sensing unit 1 contains antenna 10, bandpass filter 11, circulator 12, a coaxial waveguide to be turned to Parallel operation 13, voltage controlled oscillator 14, frequency mixer 16 and tidal signal processing unit 100, tide Position signal processing unit 100 contains pre-treatment part 101 and post processing part 102, power supply, Control module 2 contains triangular signal generator based 20 and D.C. regulated power supply 22, and antenna 10 is Work in 11GHz, beam angle less than 10 ° pyramidal horn antenna, bandpass filter 11 Be that centre frequency is the radio frequency band filter of 11GHz, circulator 12 is that model is BJ100 (WR90) microwave circulator, voltage controlled oscillator 14 are that model is the little of VCO-9901 Wave pressure controlled oscillator, frequency mixer 16 are that the microwave mixer pipe is the waveguide type crossed field of WH503 Frequency mixer, pre-treatment part 101 contains tidal signal input 103, preamplifier and low The end cut-off frequency is the active high-pass filter of 24KHz, and post processing part 102 contains amplitude limit Amplifying circuit, de-noising circuit, threshold circuit, zero cross detection circuit, shaping circuit, level Change-over circuit and tidal signal output 104, triangular signal generator based 20 is frequencies of oscillation The triangular wave letter that f Δ and output voltage can be respectively adjusted in 2～5KHz and 2～10 volts of scopes Number generator, D.C. regulated power supply 22 is that input voltage and output voltage are respectively AC220 The D.C. regulated power supply of volt and DC-12 volt, DC+5 volt, DC+12 volt, the triangular wave letter Number generator 20 is through triangular signal output 21, shielding line and modulation signal input 15 Voltage controlled oscillator 14 connects an end of a coaxial waveguide switch 13 and voltage controlled oscillator 14 Connect, the other end of a coaxial waveguide switch 13 is connected with circulator 12 through flange, ring Row device 12 is connected with the end that frequency mixer 16 is connected with bandpass filter respectively through flange, and band is logical The other end of wave filter 11 is connected with antenna 10 through flange, and frequency mixer 16 is through the output mixing Signal 17, coaxial line and tidal signal input are connected and are connected with pre-process part 101, Triangular signal generator based 20 through-12 volts ,+12 volts of supply lines and ground wire and DC voltage-stabilizing Power supply 22 connects, sensing unit 1 through-12 volts ,+5 volts ,+12 volts of supply lines, Line and be connected across shielding between the triangular signal output 21-modulation signal input 15 Line is connected with power supply, control module 2, and tidal signal output 104 is that this microwave tide level passes The output of sensor output tidal signal.
Principle of work: sensing unit 1 aims at antenna 10 that the mode on sea is installed on the support of ocean platform under it, and power supply, control module 2 are installed in the cell of ocean platform.AC power cord 23 is connected to city electrical network AC220 volt, and microwave tide level sensor is worked because of obtaining direct current supply.Triangular signal generator based 20 generation frequencies are f
ΔTriangular signal, this signal is delivered to modulation signal input end 15 through the shielding line that is connected across between the triangular signal output terminal 21-modulation signal input end 15.Triangular signal modulation centre frequency f
0The voltage controlled oscillator 14 of=11GHz, the latter produces and chirpedly transmits 105, and the frequency of this signal is f
FM=f
0+ △ F, △ F are the frequency modulation width.Linear FM signal 105 is through a coaxial waveguide switch 13, circulator 12, bandpass filter 11 and antenna 10, directive sea 4, beam angle＜10 °.The echoed signal 106 of sea 4 reflections enters frequency mixer 16 through antenna 10, bandpass filter 11, circulator 12.The frequency f of echoed signal 106 '
FM=f
FM=f
0+ △ F.In circulator 12, there is minute quantity to transmit and 105 leaked circulator 12 and enter frequency mixer 16, become the local oscillation signal 107 of frequency mixer 16, the frequency f of this signal
L=f
FM=f
0+ △ F.Transmit and 105 propagate 2 times of detection ranges 40, promptly just arrive at frequency mixer 16 as echoed signal 106 behind the 2d, echoed signal 106 arrives at frequency mixer 16 than local oscillation signal 107 hysteresis τ=2d/c second, and c is the light velocity in the formula.Echoed signal 106 and local oscillation signal 107 are after the mixer tube mixing of frequency mixer 16, and the formation frequency is f
IFIntermediate-freuqncy signal.Know by the similar right-angle triangle among Fig. 5,
Or f
IF=2 τ △ F/T
Δ, i.e. f
IF=2 τ △ Ff
Δ, T in the formula
ΔBe the cycle of triangular signal, with τ=(2/3 * 10
-8) d substitution second following formula,
D=3/41/ △ F1/f
ΔF
IF* 10
8M works as f
ΔBe chosen to be 4KHz, regulating the triangular signal output voltage is 400MHz to the frequency modulation width △ F that voltage controlled oscillator 14 produces, the nearest value of d and when value is chosen 4m and 25m respectively farthest, so, f
IFJust between 85KHz～530KHz.Intermediate-freuqncy signal claims tidal signal again.The tidal signal that mixing forms enters pre-treatment part 101 through coaxial cable and tidal signal input end 103, and this part is carried out preposition amplification and high pass active power filtering to tidal signal.The low-end cut-off frequency of the high pass active filter circuit of this part is 24KHz.The high-end cutoff frequency of this part is about 1MHz by the high frequency characteristics decision of amplifier used in preamplifier state and the active high-pass filtering level.The tidal signal that amplifies enters aftertreatment part 102, and this part is carried out amplitude limit amplification, de-noising, threshold test, zero passage detection, shaping and level conversion to tidal signal, and tidal signal is exported from tidal signal output terminal 104 with the rect.p. form.Height above sea level as antenna 10 is h, completes as soon as antenna 10 is adorned, just h is with reference to constant.Detection range 40, promptly d is relevant with tidal level, and tidal level is high more, and d is more little, and again, both sums are h, i.e. tidal level=h-d.By f
IFExpression formula know the frequency f of tidal signal
IFBe directly proportional with d.So, only need measure f with the measurement mechanism of this microwave tide level sensor coupling
IF, by calculating, just can calculate d, try to achieve tidal level then.
Triangular signal generator based 20 can be made up of oscillator and discharge circuit two parts, oscillator section is by integrated circuit: IC1 LM566, resistance: R1 1K3 and R2 10K, rheostat: W1 500K, and electric capacity: C1 0.01 μ F is formed by connecting, discharge circuit is partly by integrated circuit: IC2 LM353, resistance: R3 5K1, R4 39K, R5 10K, R6 10K, potentiometer: W2 500K, rheostat: W3 500K, electric capacity: C2 10 μ F, C3 47 μ F, C4 10F, C5 82pF is formed by connecting, and oscillator section is through the 7th pin of IC1, the 3rd pin of C2-R4 series circuit and IC2 is connected with discharge circuit, and the 7th pin of IC2 is connected with triangular signal output terminal 21.Principle of work: triangular signal generator based 20 work because of the direct current supply that obtains power supply 22.Oscillator section: R1 and R2 provide operating bias voltage to the 5th pin of IC1.W1 and C1 constitute the load of oscillation circuit.IC1 is an oscillator, produces triangular signal.Triangular signal is from the 7th pin output of IC1.Regulate W1, can make the frequency f of oscillator output triangular signal
ΔIn the scope of 2～5KHz, adjust, in basis triangular signal generator based 20, f
ΔBe adjusted to 4KHz.Discharge circuit part: IC2 is a double operational.First amplifier of IC2 is connected into follower.Triangular signal is delivered to the 3rd pin of IC2, the i.e. positive input of first amplifier through C2-R4; The 2nd pin of IC2, i.e. the 1st pin of the reverse input of first amplifier and IC2, promptly the output terminal of first amplifier connects.The triangular signal of first amplifier output is from the 1st pin output of IC2, delivers to the 6th pin of IC2, the i.e. reverse input end of second amplifier through R5, R6 and C5.The 5th pin of IC2, promptly the positive input of second amplifier is connected with the cursor slide of W2 with C3 through R3, and the two ends of W2 are connected with-12 volts with+12 volts respectively.W3 is connected across the 7th pin of IC2, and promptly between the 6th pin of the output terminal of second amplifier and IC2, the triangular signal of amplification is through the 7th pin of IC2, from 21 outputs of triangular signal output terminal.Regulate W2 and W3, can adjust the DC level and the amplitude of output triangular signal respectively.The DC level and the amplitude of this output triangular signal of triangular signal generator based 20 are adjusted at 6 volts and 2～10 volts respectively.
Tidal signal processing unit 100 can be by containing preamplifier state, the pre-treatment part 101 of the oval high pass active filter in 5 rank and contain amplitude limiting amplifier circuit, noise suppression circuit, threshold circuit, zero cross detection circuit, shaping circuit, the aftertreatment part 102 of level shifting circuit is formed, preamplifier state is by integrated circuit: IC901 LF347, resistance: R901 1K, R902 68K, electric capacity: C901 300pF is formed by connecting, the oval high pass active filter in 5 rank is by integrated circuit: IC902 LF347, IC903 LF347, resistance: R903 9K1, R904 306K, R906 16K7, R907 10K, R908 10K, R909 16K7, R910 62K, R911 5K6, R12 620K, R913 17K, R914 10K, R915 10K, R916 17K, R917 12K, R918 15K, electric capacity: C902 300pF, C903 300PF, C904 300pF, C905 300pF is formed by connecting, amplitude limiting amplifier circuit is by integrated circuit: IC904 LF347, diode: D901, D902, resistance: R919 10K, R920 20K, R921 20K, R922 10K, R923 1K, R924 5K1, rheostat: W901 500K, W902 500K is formed by connecting, noise suppression circuit, threshold circuit, zero cross detection circuit and shaping circuit are by integrated circuit: IC905 LM339, resistance: R925 6K2, R926 100K, R927 100K, R928 10K, R929 56, R930 5K1, R931 12K, potentiometer: W903 10K, electric capacity: C906 0.1 μ F, C907 47 μ F are formed by connecting, level shifting circuit is by integrated circuit: IC906 74L500, electric capacity: C908 0.1 μ F is formed by connecting, be connected across by C901 between the 3rd pin of the 7th pin of IC901 and IC902, the oval high pass active filter in preamplifier state and 5 rank connects into pre-treatment part 101, negative electrode by D902 is connected with the 6th pin of IC905, R925 is connected across between the 4th pin of the negative electrode of D901 and IC905, the 1st of IC905 is connected with 1 pin with the 2nd of IC906 respectively with 2 pin, amplitude limiting amplifier circuit, noise suppression circuit, threshold circuit, zero cross detection circuit, shaping circuit and level shifting circuit connect into aftertreatment part 102, tidal signal input end 103 is connected with the 6th pin of IC901 through R901, and the 6th pin of IC906 is connected with tidal signal output terminal 104.Principle of work: tidal signal processing unit 100 is worked because of the direct current supply that obtains power supply 22.Tidal signal is inserted big level before tidal signal input end 103 is input to, preamplifier state is amplified this signal, and enlargement factor is R902/R901, and the output signal of preamplifier state is from the 7th pin output of IC901.This output signal is input to the oval high pass active filter in 5 rank through C901.This active filter passes through by the tidal signal that frequency is higher than 24KHz, and the output signal of this active filter is from the 8th pin output of IC903.The waveform of this output signal is a sinusoidal.The amplifier that the amplifier and the 1st, 2 that the 12nd, 13,14 pin of IC904 are formed, 3 pin are formed is finished the amplification of two-stage amplitude limit, and the sinusoidal signal that the oval high pass active filter in 5 rank is exported is converted to rectangular signal.Be input to the 13rd pin of IC904 from the sinusoidal signal of IC903 the 8th pin through R919, through of the 1st pin output of two-stage amplitude limit amplifying signal from IC904.The enlargement factor of the forward and backward level amplifier of above-mentioned IC904 is respectively R902/R919 and W901/R921.Adjusting W901 can adjust the enlargement factor of back level amplifier.The 8th, 9,10 pin of IC904 are formed the 3rd amplifier.D902, C907, C906, R929 form noise suppression circuit.The 14th pin from IC904; The tidal signal of output terminal that is the prime amplifier is through the 9th pin of R923 input IC904, the i.e. reverse input end of the 3rd amplifier.Adjusting W902 can adjust the enlargement factor of this amplifier.The output signal of this amplifier is the not steep square-wave signal of before and after edge, after D902, C907, C906, R929 suppress high frequency noise, is input to the 6th pin of IC905, i.e. the reverse input end of threshold values circuit is as the threshold values circuit input signal.This input signal is through the amplitude of the noise suppression rectangle tidal signal between+0.6～+ 12 volt.Threshold level is input to the 7th pin of IC905, the i.e. positive input of threshold values circuit through the cursor slide of W903.Regulate W903, the height of adjustable valve value level.The 1st, 6,7 foots of IC905 are divided into comparer.Threshold values circuit input signal and the threshold level output signal after relatively is from the 1st pin output of IC905.When the threshold values circuit input signal is higher than threshold level, the output signal of threshold values circuit is 0 volt; When the threshold values circuit input signal is lower than threshold level, the threshold values circuit output signal is+12 volts.The output signal of knowing the 1st pin of IC905 thus by inference be before and after edge steep, amplitude is between 0～+ 12 volt square wave tidal signal, the i.e. tidal signal of shaping.In like manner, the tidal signal of the negative electrode of D901 output be before and after edge not steep, amplitude is between-0.6～+ 12 volt square wave tidal signal, but wherein is mixed with the high frequency noise pulse.R927 and R928 bleeder circuit are to the 5th pin of IC905, and promptly the positive input of zero cross detection circuit provided zero reference level ,+1.09 volts.The tidal signal of the negative electrode output of D901 is through the 4th pin of R925 input IC905, the i.e. reverse input end of zero cross detection circuit.The 2nd, 4,5 foots of IC905 are divided into comparer.The input signal of zero cross detection circuit with cross of the 2nd pin output of the output signal of zero reference level after relatively from IC905.When zero passage testing circuit input signal was higher than zero reference level, the output signal of zero cross detection circuit is 0 volt; When zero passage testing circuit input signal was lower than zero reference level, the output signal of zero cross detection circuit is+12 volts.Know by inference thus, the output signal of the 2nd pin of IC905 be before and after edge steep, amplitude is between 0～+ 12 volt square wave tidal signal, i.e. shaping tidal signal, but wherein still be mixed with the high frequency noise pulse.The 2nd and 1 pin of IC905 is delivered to output signal separately the 2nd and 1 pin of IC906, the i.e. input end of level shifting circuit respectively.The 1st, 2,3 foots of IC906 are divided into two input end Sheffer stroke gates, and the 1st, 2 pin and the 3rd pin are respectively two input ends and output terminal; The 4th pin of IC906 is connected with the 5th pin, makes the 4th, 5,6 pin of IC906 constitute not gate, and the 6th pin of IC906 is an output terminal.The 3rd pin of IC906 is connected with 5 pin with the 4th.When the 6th and 4 pin of IC905 are lower than threshold level respectively and cross zero reference level, when the 1st and 2 pin of IC906 are+12 volts simultaneously, the 6th pin of IC906 is exported the tidal signal of the steep rectangle of before and after edge, and exports from tidal signal processing unit 100 through tidal signal output terminal 104.The level of this tidal signal is converted to amplitude between 0～+ 5 volt from amplitude between 0～+ 12 volt.Be mixed in the output signal of negative electrode of D901, amplitude is greater than 1.09 volts HF noise signal, obviously can't be by the shaping circuit and the level shifting circuit of Sheffer stroke gate-not gate.
Second purpose of the present invention is by realizing above-mentioned microwave tide level sensor and intelligent processing unit 3 composition microwave tide level instrument.The purposes of this microwave tide level sensor: above-mentioned sensor and intelligent processing unit 3 are formed the microwave tide level instrument, intelligent processing unit 3 contains tidal signal input end 30, tidal level display window 31, display screen 32, data-interface 34, AC power cord 35, tidal level difference frequency signal processing section, the umber of pulse part, calculate the tidal level part, the data statistics part, data display unit and data store are grouped into, intelligent processing unit 3 is worked under power autonomous power supply, when frequency is that the tidal signal of fIF is when tidal signal input end 30 is input to intelligent processing unit 3, intelligent processing unit 3 is shown in tidal level display window 31 in real time to tidal level, tidal level performance graph 33 is shown in display screen 32, the tidal level data storage is transported to bank monitoring station, ocean through data-interface 34 and cable in storer or the tidal level data, it is characterized in that, transducing part 1 is aimed under it mode on sea 4 with antenna 10 and is installed on the support of ocean platform, outdoor section as the microwave tide level instrument, and power supply, control module 2 and intelligent processing unit 3 place in the cell of ocean platform as indoor section, outdoor section and indoor section pass through 6 core shielded cables :-12 volts, + 5 volts, + 12 volts of supply lines, ground wire, be connected across the shielding line between triangular signal output terminal 21 and the modulation signal input end 15, and the concentric cable that is connected across between tidal signal output terminal 104 and the tidal signal input end 30 links together.Principle of work: AC power cord 23 and 35 is connected to city electrical network AC220 volt, and the microwave tide level instrument is worked because of obtaining power supply.Tidal signal output terminal 104 output frequencies and waveform are respectively f
IFWith the tidal signal of rectangle, be sent to the tidal signal input end 30 of intelligent processing unit 3 through concentric cable, handle and the step-by-step counting processing by the tidal level difference frequency signal, measure f
IFFrequency; Handle by calculating tidal level, successively calculate detection range 40, be i.e. d and try to achieve tidal level at last; Handle by data presentation, tidal level is shown in tidal level display window 31 in real time; Handle by data statistics and data presentation, tidal level performance graph 33 is shown in display screen 32; By data statistics and data storage, the tidal level data are deposited in storer; By data-interface 34 and cable, can the tidal level data be sent to the marine monitoring bank station or with the computer interconnection of bank station.
Compare with background technology, the present invention has following advantage:
1. only need connect a concentric cable, the present invention just can be easily contains power autonomous intelligent processing unit coupling with any, and formation can show the microwave tide level instrument of reading the parameter multi-format.
2. the present invention works in Ku wave band (11GHz), and the frequency height can be avoided the interference of satellite communication (12GHz) and navar (9.395GHz) signal when the present invention is worked.
3. ingredient of the present invention, the compact size of antenna 10, in light weight, be easy to install, and can avoid adjacent unrestrained peak scattering electric wave and seal in antenna.
4. the present invention surveys the precision height of tidal level, is better than 5%.
5. in 25m detection range scope, rain, snow and mist are little to electric wave attenuation by absorption, but guarantee the present invention's all-weather, round-the-clock and survey the tidal level of ocean safely.
To sum up, the present invention is particularly suitable for and intelligent tidal level processing unit and networking, forms and surveys the microwave tide level instrument automatically, is used for the ocean tidal level is carried out long-term and safe detection and supervision.
Claims (5)
1. microwave tide level sensor, it is characterized in that, it is by sensing unit 1 and power supply, control module 2 is formed, sensing unit 1 contains antenna 10, bandpass filter 11, circulator 12, a coaxial waveguide switch 13, voltage controlled oscillator 14, frequency mixer 16 and tidal signal processing unit 100, tidal signal processing unit 100 contains pre-treatment part 101 and aftertreatment part 102, power supply, control module 2 contains triangular signal generator based 20 and D.C. regulated power supply 22, antenna 10 is to work in 11GHz, beam angle is less than 10 ° pyramidal horn antenna, bandpass filter 11 is that centre frequency is the radio frequency band filter of 11GHz, circulator 12 is that model is the microwave circulator of BJ100 (WR90), voltage controlled oscillator 14 is that model is the microwave voltage controlled oscillator of VCO-9901, frequency mixer 16 is that the microwave mixer pipe is the waveguide type crossed field frequency mixer of WH503, pre-treatment part 101 contains tidal signal input end 103, prime amplifier and low-end cut-off frequency are the active high-pass filter of 24KHz, aftertreatment part 102 contains amplitude limiting amplifier circuit, de-noising circuit, threshold circuit, zero cross detection circuit, shaping circuit, level shifting circuit and tidal signal output terminal 104, triangular signal generator based 20 is oscillation frequency f
ΔWith output voltage can be respectively in 2～5KHz and 2～10 volts of scopes, adjust triangular signal generator based, D.C. regulated power supply 22 is that input voltage and output voltage are respectively AC220 volt and DC-12 volt, the DC+5 volt, the D.C. regulated power supply of DC+12 volt, triangular signal generator based 20 through triangular signal output terminal 21, shielding line is connected with modulation signal input end 15 voltage controlled oscillators 14, one end of a coaxial waveguide switch 13 is connected with voltage controlled oscillator 14, the other end of a coaxial waveguide switch 13 is connected with circulator 12 through flange, circulator 12 is connected with an end of frequency mixer 16 and bandpass filter 11 respectively through flange, the other end of bandpass filter 11 is connected with antenna 10 through flange, frequency mixer 16 is through output terminal mixed frequency signal 17, coaxial cable is connected with pre-process part 101 with tidal signal input end 103, triangular signal generator based 20 through-12 volts, + 12 volts of supply lines are connected with D.C. regulated power supply 22 with ground wire, sensing unit 1 is through-12 volts, + 5 volts, + 12 volts of supply lines, ground wire and be connected across shielding line and power supply between the triangular signal output terminal 21-modulation signal input end 15, control module 2 connects, and tidal signal output terminal 104 is output terminals of this microwave tide level sensor output tidal signal.
2. microwave tide level sensor according to claim 1, it is characterized in that, triangular signal generator based 20 can be made up of oscillator and discharge circuit two parts, oscillator section is by integrated circuit: IC1 LM566, resistance: R1 1K3 and R2 10K, rheostat: W1 500K, and electric capacity: C10.01 μ F is formed by connecting, discharge circuit is partly by integrated circuit: IC2 LM353, resistance: R3 5K1, R4 39K, R5 10K, R6 10K, potentiometer: W2 500K, rheostat: W3 500K, electric capacity: C2 10 μ F, C3 47 μ F, C4 10 μ F, C5 82pF is formed by connecting, and oscillator section is through the 7th pin of IC1, the 3rd pin of C2-R4 series circuit and IC2 is connected with discharge circuit, and the 7th pin of IC2 is connected with triangular signal output terminal 21.
3. microwave tide level sensor according to claim 1 and 2, it is characterized in that, tidal signal processing unit 100 can be by containing preamplifier state, the pre-treatment part 101 of the oval high pass active filter in 5 rank and contain amplitude limiting amplifier circuit, noise suppression circuit, threshold circuit, zero cross detection circuit, shaping circuit, the aftertreatment part 102 of level shifting circuit is formed, preamplifier state is by integrated circuit: IC901 LF347, resistance: R901 1K, R902 68K, electric capacity: C901 300pF is formed by connecting, the oval high pass active filter in 5 rank is by integrated circuit: IC902 LF347, IC903 LF347, resistance: R903 9K1, R904 306K, R906 16K7, R907 10K, R908 10K, R909 16K7, R910 62K, R911 5K6, R12 620K, R913 17K, R914 10K, R915 10K, R916 17K, R917 12K, R918 15K, electric capacity: C902 300pF, C903 300PF, C904 300pF, C905 300pF is formed by connecting, amplitude limiting amplifier circuit is by integrated circuit: IC904 LF347, diode: D901, D902, resistance: R919 10K, R920 20K, R921 20K, R922 10K, R923 1K, R924 5K1, rheostat: W901 500K, W902 500K is formed by connecting, noise suppression circuit, threshold circuit, zero cross detection circuit and shaping circuit are by integrated circuit: IC905 LM339, resistance: R925 6K2, R926 100K, R927 100K, R928 10K, R929 56, R930 5K1, R931 12K, potentiometer: W903 10K, electric capacity: C906 0.1 μ F, C907 47 μ F are formed by connecting, level shifting circuit is by integrated circuit: IC906 74L500, electric capacity: C908 0.1 μ F is formed by connecting, be connected across by C901 between the 3rd pin of the 7th pin of IC901 and IC902, the oval high pass active filter in preamplifier state and 5 rank connects into pre-treatment part 101, negative electrode by D902 is connected with the 6th pin of IC905, R925 is connected across between the 4th pin of the negative electrode of D901 and IC905, the 1st of IC905 is connected with 1 pin with the 2nd of IC906 respectively with 2 pin, amplitude limiting amplifier circuit, noise suppression circuit, threshold circuit, zero cross detection circuit, shaping circuit and level shifting circuit connect into aftertreatment part 102, tidal signal input end 103 is connected with the 6th pin of IC901 through R901, and the 6th pin of IC906 is connected with tidal signal output terminal 104.
4. according to claim 1 or 2 or 3 described microwave tide level sensors, it is characterized in that antenna 10 length, width, height and beam angle is respectively the pyramidal horn antenna of 180mm, 148mm, 380mm and 9 °.
5. according to the purposes of claim 1 or 2 or 3 or 4 described microwave tide level sensors: above-mentioned sensor and intelligent processing unit 3 are formed the microwave tide level instrument, intelligent processing unit 3 contains tidal signal input end 30, tidal level display window 31, display screen 32, data-interface 34, AC power cord 35, tidal level difference frequency signal processing section, umber of pulse part, calculating tidal level part, data statistics part, data display unit and data store and is grouped into, intelligent processing unit 3 is worked under power autonomous power supply, when frequency is f
IFTidal signal when tidal signal input end 30 is input to intelligent processing unit 3, intelligent processing unit 3 is shown in tidal level display window 31 in real time to tidal level, tidal level performance graph 33 is shown in display screen 32, the tidal level data storage is transported to bank monitoring station, ocean through data-interface 34 and cable in storer or the tidal level data, it is characterized in that, transducing part 1 is aimed under it mode on sea 4 with antenna 10 and is installed on the support of ocean platform, outdoor section as the microwave tide level instrument, and power supply, control module 2 and intelligent processing unit 3 place in the cell of ocean platform as indoor section, outdoor section and indoor section pass through 6 core shielded cables :-12 volts, + 5 volts, + 12 volts of supply lines, ground wire, be connected across the shielding line between triangular signal output terminal 21 and the modulation signal input end 15, and the concentric cable that is connected across between tidal signal output terminal 104 and the tidal signal input end 30 links together.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105136126A (en) * | 2015-08-27 | 2015-12-09 | 国家海洋技术中心 | Method for performing tsunami wave detection through deep sea bottom pressure data |
| CN105928495A (en) * | 2016-04-08 | 2016-09-07 | 盐城师范学院 | Array capacitive rod type ocean wave parameter measuring device |
| CN109669175A (en) * | 2019-01-31 | 2019-04-23 | 南京理工大学 | A kind of linear frequency modulation continuous wave range radar and method based on band logical antenna |
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2000
- 2000-11-01 CN CNB001271075A patent/CN1138129C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136126A (en) * | 2015-08-27 | 2015-12-09 | 国家海洋技术中心 | Method for performing tsunami wave detection through deep sea bottom pressure data |
| CN105136126B (en) * | 2015-08-27 | 2017-10-10 | 国家海洋技术中心 | The method that tsunami ripple detecting is carried out using deep seafloor pressure data |
| CN105928495A (en) * | 2016-04-08 | 2016-09-07 | 盐城师范学院 | Array capacitive rod type ocean wave parameter measuring device |
| CN105928495B (en) * | 2016-04-08 | 2017-12-26 | 盐城师范学院 | Array capacitor pole type ocean wave parameter measurement apparatus |
| CN109669175A (en) * | 2019-01-31 | 2019-04-23 | 南京理工大学 | A kind of linear frequency modulation continuous wave range radar and method based on band logical antenna |
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| CN1138129C (en) | 2004-02-11 |
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