CN109443520A - A kind of noise testing real-time data transmission device - Google Patents
A kind of noise testing real-time data transmission device Download PDFInfo
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- CN109443520A CN109443520A CN201811635548.8A CN201811635548A CN109443520A CN 109443520 A CN109443520 A CN 109443520A CN 201811635548 A CN201811635548 A CN 201811635548A CN 109443520 A CN109443520 A CN 109443520A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
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Abstract
The invention discloses a kind of noise testing real-time data transmission devices, the frequency modulation circuit carries out resonance by the 200-1000Hz frequency signal that the noise transducer of resonance circuit and received model GSD130 export and generates resonance frequency, obtain the corresponding frequency signal of measurement noise, into triode Q1, concussion coil LP1 is that the 450MHz oscillation frequency that the LC oscillator of core generates is modulated, signal is after 2 frequency multiplication of frequency multiplier after modulation, enter feedback frequency modulation circuit all the way, pass through triode Q2, Q3 is that the resonance frequency of output signal is fed back with the frequency offset signal of reference frequency signal resonance frequency to LC oscillator after the difference channel of core calculates frequency multiplication, make frequency signal coal mine frequency of optimum traffic 900MH after modulating, another way enters amplification output circuit, By being added on transmitter after amplitude amplification, unilateal conduction, the filtering of π type filter circuit.Effective solution transmitter low-frequency range transmitting, the problem of in signal transduction process vulnerable to electromagnetic noise interference, decaying.
Description
Technical field
The present invention relates to coal mines, noise testing technical field, fill more particularly to a kind of noise testing real-time data transmission
It sets.
Background technique
Noise can interfere work, talk, rest, the sleep of people, damage the hearing of people, cause psychology, physiology and the disease of people
Reason reaction, especially more severe in the noise hazard of coal mine place, employee exposes this environmental work for a long time will cause noise-induced hearing
Damage, therefore noise is measured, is monitored, and then takes noise reduction protective measure very necessary, it is mainly passed at present using noise
Sensor measures noise in coal mine information, is transferred to computer by communication cable or transmitter, then real-time by network by computer
Monitoring central server is transmitted to remotely to be monitored, since communication cable is laid with inconvenience in coal mine place, and noise passes
Sensor information is transferred to computer as short distance transmission, generallys use transmitter and is transmitted, in order to reduce transmission attenuation, usually
Selection low-frequency range (30KHz-30KHz) is emitted, and coal mine is very big in the electromagnetic noise of low-frequency range, inhibits transmitter to believe with this
Decaying in number transmittance process, the anti-interference for improving signal be the noise testing of coal mine place an important technological problems it
One.
So the present invention provides the new scheme of one kind to solve the problems, such as this.
Summary of the invention
For above situation, for the defect for overcoming the prior art, purpose of the present invention is to provide a kind of noise testing numbers
Transmitting device when factually, have be skillfully constructed, the characteristic of human oriented design, effective solution transmitter low-frequency range transmitting, letter
The problem of in number transmittance process vulnerable to electromagnetic noise interference, decaying.
Its technical solution solved is, including noise transducer, transmitter, the noise in coal mine of the noise transducer measurement
Information is transmitted to noise monitoring server by transmitter, realizes on-line monitoring, real-time Transmission, which is characterized in that passes in noise
Frequency modulation circuit, feedback frequency modulation circuit, amplification output circuit, the frequency modulation(PFM) electricity are also connected between sensor and transmitter
Road is sensed by the noise of varactor DC1, capacitor C1, the resonance circuit of inductance L1 composition and received model GSD130
The 200-1000Hz frequency signal of device output carries out resonance and generates resonance frequency, obtains the corresponding frequency signal of measurement noise, into
Enter triode Q1, the 450MHz oscillation frequency that the LC oscillator that concussion coil LP1 is core generates is modulated, signal after modulation
After 2 frequency multiplication of frequency multiplier formed through varactor DC2, inductance L2- inductance L4, capacitor C6- capacitor C9, enters feedback all the way and adjust
Frequency circuit calculates the resonance frequency and benchmark frequency of output signal after frequency multiplication by the difference channel that triode Q2, Q3 are core
The frequency offset signal feedback of rate signal resonance frequency makes the frequency signal coal mine frequency of optimum traffic after modulation to LC oscillator
900MH, another way enter amplification output circuit, the amplitude of frequency signal is amplified by the amplifier that triode Q2 is core,
It is added on transmitter after the π type filter circuit filtering of diode D1 unilateal conduction, inductance L8 and capacitor C20 and C21 composition.
Due to the use of above technical scheme, the present invention has the following advantages that compared with prior art；
1, the 200-1000Hz frequency signal of noise transducer output is subjected to resonance through resonance circuit and generates resonance frequency, to obtain
The corresponding single-frequency signals of noise must be measured, enters the 450MHz oscillation frequency that LC oscillator generates later and is modulated, adjust
Signal is modulated to the coal mine frequency of optimum traffic through 2 frequency multiplication of varactor frequency multiplier to guarantee warbled stability after system
The transmission of 900MH high band reduces the problem of low-frequency range transmission is vulnerable to electromagnetic noise interference, together to improve anti-interference
Shi Liyong differential principle is calculated defeated after frequency multiplication by the double-width grinding Single-end output difference channel that triode Q2, Q3 are core
The frequency offset signal of the resonance frequency of signal and reference frequency signal resonance frequency, that is, frequency difference signal feedback to frequency modulation(PFM) electricity out
LC oscillator in road is further modulated, improves the precision of modulation；
2, the high-frequency amplifier being made up of triode Q2, resistance R4- resistance R6, capacitor C10, capacitor C19 is to frequency signal
Amplitude amplification, diode D1 unilateal conduction are added to transmitter after the π type filter circuit filtering that inductance L8, capacitor C20, C21 are formed
On, the decaying in compensation transmitter signal transduction process.
Detailed description of the invention
Fig. 1 is circuit module figure of the invention.
Fig. 2 is circuit diagram of the invention.
Fig. 3 is feedback frequency modulation circuit signal flow graph of the invention.
Specific embodiment
For the present invention aforementioned and other technology contents, feature and effect, in following cooperation with reference to figures 1 through attached drawing 3
To in the detailed description of embodiment, can clearly present.The structure content being previously mentioned in following embodiment is with specification
Attached drawing is reference.
Each exemplary embodiment of the invention is described below with reference to accompanying drawings.
Embodiment one, a kind of noise testing real-time data transmission device, including noise transducer, transmitter, the noise
The noise in coal mine information of sensor measurement is transmitted to noise monitoring server by transmitter, realizes and monitors on-line, real-time Transmission,
Frequency modulation circuit, feedback frequency modulation circuit, amplification output circuit, the frequency are also connected between noise transducer and transmitter
The 200-1000Hz frequency signal of the noise transducer output of the received model GSD130 of rate modulation circuit, passes through two pole of transfiguration
The tunable resonance circuit progress resonance generation resonance frequency of pipe DC1, capacitor C1, inductance L1 composition, it is corresponding to obtain measurement noise
Frequency signal enters triode Q1, resistance R1- resistance R3, the LC oscillator that concussion coil LP1 is core later and generates
450MHz oscillation frequency is modulated, and signal is through varactor DC2, inductance L2- inductance L4, capacitor C6- capacitor C9 after modulation
After 2 frequency multiplication of varactor frequency multiplier of composition, it is modulated to the transmission of coal mine frequency of optimum traffic 900MH high band, to improve
Anti-interference enters feedback frequency modulation circuit all the way later, is the both-end of core by triode Q2, Q3 using differential principle
Input Single-end output difference channel calculates the resonance frequency of output signal after frequency multiplication (specifically by output signal after frequency multiplication through electricity
Hold the base stage that C12 is coupled to triode Q2, is produced from the shunt-resonant circuit LC of triode Q2 emitter capacity C14, inductance L5 composition
Raw resonance frequency, capacitor C13 series capacitance C14 are padding capacitor, and resistance R8 is base biasing resistor, resistance R11, capacitor C15,
Inductance L6 provides stable bias voltage for collector) with reference frequency signal resonance frequency (specifically by the crystal oscillator of 900MHz
Y1 makees focus, and the shunt-resonant circuit the LC concussion of triode Q3 emitter capacity C18, inductance L8 composition generates resonance frequency, electricity
Appearance C17 series capacitance C18 is padding capacitor, and resistance R19 is base biasing resistor, and resistance R12, capacitor C16, inductance L7 are current collection
Pole provides stable bias voltage, and resistance RP1 is zero potentiometer, output signal when keeping triode Q2, Q3 input signal consistent
Frequency offset signal unanimously), that is, frequency difference signal feeds back the LC oscillator into frequency modulation circuit, guarantees frequency modulation circuit tune
Frequency signal is coal mine frequency of optimum traffic 900MH after system, frequency multiplication, improves the precision of modulation, and another way enters amplification output
Circuit, by triode Q2, resistance R4- resistance R6, capacitor C10, capacitor C19 composition high-frequency amplifier to the width of frequency signal
Degree amplification, diode D1 unilateal conduction are added to transmitter after the π type filter circuit filtering that inductance L8, capacitor C20, C21 are formed
On, the decaying in compensation transmitter signal transduction process.
Embodiment two, on the basis of example 1, the noise of the received model GSD130 of frequency modulation circuit
The 200-1000Hz frequency signal of sensor output, the turnable resonator being made up of varactor DC1, capacitor C1, inductance L1
Circuit carries out resonance and generates resonance frequency, obtains the corresponding frequency signal of measurement noise, enters triode Q1, resistance R1- later
The 450MHz oscillation frequency that resistance R3, the LC oscillator that concussion coil LP1 is core generate is modulated, wherein resistance R1, electricity
The base biasing resistor that R2 is triode Q1 is hindered, LC oscillator oscillation frequency is adjusted in the value for adjusting concussion coil LP1, after modulation
After 2 frequency multiplication of varactor frequency multiplier that signal is formed through varactor DC2, inductance L2- inductance L4, capacitor C6- capacitor C9,
It is modulated to the transmission of coal mine frequency of optimum traffic 900MH high band, so that anti-interference is improved, including capacitor C1, capacitor C1's
Left end connects the 200-1000Hz frequency signal of the noise transducer output of model GSD130, and the right end of capacitor C1 is separately connected
The anode of varactor DC1, one end of inductance L1, one end of capacitor C2, concussion coil LP1 input one end, triode Q1
One end of collector, capacitor C4, the cathode of varactor DC1, the other end of inductance L1, the other end of capacitor C2, concussion line
The circle LP1 input other end is all connected with power supply+6V, and the other end of capacitor C4 is separately connected one end of ground capacity C5, triode Q1
Emitter, ground resistance R3 one end, the base stage of triode Q1 be separately connected one end of resistance R1, ground resistance R2 one
End, the other end of resistance R1 connect power supply+6V, and concussion coil LP1 exports one end of one end connection inductance L2, and inductance L2's is another
One end of end connection capacitor C6, the other end of capacitor C6 are separately connected the anode of varactor DC2, one end of inductance L4, electricity
Hold one end of C7, the other end of inductance L4 is separately connected one end of one end of capacitor C8, capacitor C9, and concussion coil LP1 output is another
One end connects one end of capacitor C3, the other end of capacitor C3, the cathode of varactor DC2, the other end of capacitor C8, capacitor C9
The other end be all connected with ground, one end of the other end connection inductance L3 of capacitor C7, the other end of inductance L3 is frequency modulation circuit
Output signal.
Embodiment three, on the basis of example 2, the feedback frequency modulation circuit receive the output letter of frequency modulation circuit
Number, using differential principle, calculated by the double-width grinding Single-end output difference channel that triode Q2, Q3 are core defeated after frequency multiplication
The resonance frequency of signal (is specifically coupled to the base stage of triode Q2, triode Q2 by output signal after frequency multiplication through capacitor C12 out
The shunt-resonant circuit LC of emitter capacity C14, inductance L5 composition generates resonance frequency, and capacitor C13 series capacitance C14 is that pad is whole
Capacitor, resistance R8 are base biasing resistor, and resistance R11, capacitor C15, inductance L6 provide stable bias voltage for collector) with
Reference frequency signal resonance frequency (specifically makees focus, triode Q3 emitter capacity C18, inductance by the crystal oscillator Y1 of 900MHz
The shunt-resonant circuit the LC concussion of L8 composition generates resonance frequency, and capacitor C17 series capacitance C18 is padding capacitor, and resistance R19 is
Base biasing resistor, resistance R12, capacitor C16, inductance L7 provide stable bias voltage for collector, and resistance RP1 is zeroing electricity
Position device, output signal is consistent when keeping triode Q2, Q3 input signal consistent) the i.e. frequency difference signal feedback of frequency offset signal to frequency
LC oscillator in modulation circuit makes frequency signal coal mine frequency of optimum traffic 900MH after modulation frequency multiplication, to improve anti-
Interference reduces the problem of low-frequency range transmission is vulnerable to electromagnetic noise interference, including triode Q2, triode Q3, triode Q2
Base stage be separately connected one end of resistance R8, one end of capacitor C12, capacitor C13 one end, the other end of capacitor C12 connects frequency
The output signal of rate modulation circuit, the other end of capacitor C13 are separately connected one end of capacitor C14, the emitter of triode Q2, electricity
Hinder one end of R10, one end of inductance L5, potentiometer RP1 right end, the other end of capacitor C14, the other end of resistance R10, inductance
The other end of L5 is all connected with ground, and the collector of triode Q2 is separately connected one end of one end of capacitor C15, inductance L6, capacitor C15
The other end connection resistance R11 one end, the other end of resistance R11, the other end of inductance L6, resistance R8 the other end be all connected with
Power supply+6V, the base stage of triode Q3 be separately connected one end of resistance R9, one end of capacitor C17, crystal oscillator Y1 right end, capacitor C17
The other end be separately connected one end of capacitor C18, the emitter of triode Q3, one end of resistance R13, one end of inductance L8, electricity
The left end and adjustable end of position device RP1, the anode of the left end connection electrolytic capacitor E2 of crystal oscillator Y1, cathode, the capacitor of electrolytic capacitor E2
The other end of C18, the other end of resistance R13, inductance L8 the other end be all connected with ground, the collector of triode Q3 is separately connected electricity
Hold one end of C16, one end of inductance L7, one end of the other end connection resistance R12 of capacitor C16, the other end, the electricity of resistance R12
The other end of the other end, resistance R9 of feeling L7 is all connected with power supply+6V, the output of the current collection of triode Q3 extremely feedback frequency modulation circuit
Signal feeds back the emitter of the triode Q1 into frequency modulation circuit；
The amplification output circuit is used for the high frequency being made up of triode Q2, resistance R4- resistance R6, capacitor C10, capacitor C19
Amplifier amplifies the amplitude of frequency signal, diode D1 unilateal conduction, the π type filtered electrical of inductance L8, capacitor C20, C21 composition
It is added on transmitter after the filtering of road, the decaying in compensation transmitter signal transduction process, including capacitor C10, one end of capacitor C10
The output signal of rate of connections modulation circuit, the other end of capacitor C10 are separately connected the base of one end of resistance R5, triode Q4
Pole, by resistance R4 connection, the collector of triode Q4 is separately connected one end of resistance R6, capacitor to the emitter of triode Q4
One end of C19, the other end of resistance R5, the other end of resistance R6 connect power supply+15V, and the other end of capacitor C19 connects diode
The anode of D1, the cathode of diode D1 are separately connected one end of one end of inductance L9, ground capacity C20, the other end of inductance L9
One end with ground capacity C21 is the output signal of amplification output circuit, is added on transmitter.
When the present invention is specifically used, the 200- of the noise transducer output of the received model GSD130 of frequency modulation circuit
1000Hz frequency signal carries out resonance generation by the tunable resonance circuit of varactor DC1, capacitor C1, inductance L1 composition
Resonance frequency obtains the corresponding frequency signal of measurement noise, enters triode Q1, resistance R1- resistance R3, concussion coil later
LP1 is that the 450MHz oscillation frequency that the LC oscillator of core generates is modulated, and signal is through varactor DC2, electricity after modulation
After 2 frequency multiplication of varactor frequency multiplier for feeling L2- inductance L4, capacitor C6- capacitor C9 composition, it is modulated to the coal mine frequency of optimum traffic
The transmission of 900MH high band reduces the problem of low-frequency range transmission is vulnerable to electromagnetic noise interference to improve anti-interference, it
Enter feedback frequency modulation circuit all the way afterwards, it is poor for the double-width grinding Single-end output of core by triode Q2, Q3 using differential principle
The resonance frequency that parallel circuit calculates output signal after frequency multiplication (is specifically coupled to three through capacitor C12 by output signal after frequency multiplication
The base stage of pole pipe Q2, the shunt-resonant circuit LC of triode Q2 emitter capacity C14, inductance L5 composition generate resonance frequency, electricity
Appearance C13 series capacitance C14 is padding capacitor, and resistance R8 is base biasing resistor, and resistance R11, capacitor C15, inductance L6 are current collection
Pole provides stable bias voltage) (focus, three poles are specifically made by the crystal oscillator Y1 of 900MHz with reference frequency signal resonance frequency
The shunt-resonant circuit the LC concussion of pipe Q3 emitter capacity C18, inductance L8 composition generates resonance frequency, capacitor C17 series capacitance
C18 is padding capacitor, and resistance R19 is base biasing resistor, and resistance R12, capacitor C16, inductance L7 provide stable for collector
Bias voltage, resistance RP1 be zero potentiometer, output signal is consistent when keeping triode Q2, Q3 input signal consistent) frequency deviation letter
Number i.e. frequency difference signal feeds back LC oscillator into frequency modulation circuit, guarantees frequency after frequency modulation circuit modulation, frequency multiplication
Signal is coal mine frequency of optimum traffic 900MH, improves the precision of modulation, another way enters amplification output circuit, passes through three poles
The high-frequency amplifier that pipe Q2, resistance R4- resistance R6, capacitor C10, capacitor C19 are formed amplifies the amplitude of frequency signal, diode
D1 unilateal conduction is added on transmitter, compensation transmitter letter after the π type filter circuit filtering that inductance L8, capacitor C20, C21 are formed
Decaying in number transmittance process.
Claims (3)
1. a kind of noise testing real-time data transmission device, including noise transducer, transmitter, the noise transducer measurement
Noise in coal mine information is transmitted to noise monitoring server by transmitter, realizes on-line monitoring, real-time Transmission, which is characterized in that
Frequency modulation circuit, feedback frequency modulation circuit, amplification output circuit, the frequency are also connected between noise transducer and transmitter
Rate modulation circuit passes through varactor DC1, capacitor C1, the resonance circuit of inductance L1 composition and received model GSD130
The 200-1000Hz frequency signal of noise transducer output carries out resonance and generates resonance frequency, obtains the corresponding frequency of measurement noise
Signal, the 450MHz oscillation frequency generated into triode Q1, the LC oscillator that concussion coil LP1 is core are modulated, adjust
After system signal through varactor DC2, inductance L2- inductance L4, capacitor C6- capacitor C9 composition 2 frequency multiplication of frequency multiplier after, all the way into
Enter feedback frequency modulation circuit, the resonance frequency of output signal after frequency multiplication is calculated by the difference channel that triode Q2, Q3 are core
Frequency offset signal feedback with reference frequency signal resonance frequency makes frequency signal coal mine best transmission after modulation to LC oscillator
Frequency 900MH, another way enter amplification output circuit, are put by the amplifier that triode Q2 is core to the amplitude of frequency signal
Greatly, it is added on transmitter after the π type filter circuit filtering of diode D1 unilateal conduction, inductance L8 and capacitor C20 and C21 composition.
2. a kind of noise testing real-time data transmission device as described in claim 1, which is characterized in that the frequency modulation circuit
Including capacitor C1, the 200-1000Hz frequency signal that the noise transducer of the left end connection model GSD130 of capacitor C1 exports,
The right end of capacitor C1 is separately connected the anode of varactor DC1, one end of inductance L1, one end of capacitor C2, concussion coil LP1
Input one end of one end, the collector of triode Q1, capacitor C4, the cathode of varactor DC1, the other end of inductance L1, electricity
The other end, the concussion coil LP1 input other end of appearance C2 is all connected with power supply+6V, and the other end of capacitor C4 is separately connected ground connection electricity
Hold one end of one end of C5, the emitter of triode Q1, ground resistance R3, the base stage of triode Q1 is separately connected the one of resistance R1
It holds, one end of ground resistance R2, the other end of resistance R1 connects power supply+6V, and concussion coil LP1 exports one end connection inductance L2's
One end, one end of the other end connection capacitor C6 of inductance L2, the other end of capacitor C6 are being separately connected varactor DC2 just
Pole, one end of inductance L4, capacitor C7 one end, the other end of inductance L4 is separately connected one end of one end of capacitor C8, capacitor C9,
Shake one end of coil LP1 output other end connection capacitor C3, the other end of capacitor C3, the cathode of varactor DC2, capacitor
The other end of C8, the other end of capacitor C9 are all connected with ground, and one end of the other end connection inductance L3 of capacitor C7, inductance L3's is another
End is the output signal of frequency modulation circuit.
3. a kind of noise testing real-time data transmission device as described in claim 1, which is characterized in that the feedback frequency modulation circuit
Including triode Q2, triode Q3, the base stage of triode Q2 is separately connected one end of resistance R8, one end of capacitor C12, capacitor
One end of C13, the output signal of the other end rate of connections modulation circuit of capacitor C12, the other end of capacitor C13 are separately connected electricity
Hold one end of C14, the emitter of triode Q2, one end of resistance R10, one end of inductance L5, potentiometer RP1 right end, capacitor
The other end of C14, the other end of resistance R10, inductance L5 the other end be all connected with ground, the collector of triode Q2 is separately connected electricity
Hold one end of C15, one end of inductance L6, one end of the other end connection resistance R11 of capacitor C15, the other end, the electricity of resistance R11
Feel the other end of L6, the other end of resistance R8 is all connected with power supply+6V, the base stage of triode Q3 be separately connected resistance R9 one end,
One end of capacitor C17, crystal oscillator Y1 right end, the other end of capacitor C17 is separately connected the hair of one end of capacitor C18, triode Q3
Emitter-base bandgap grading, one end of resistance R13, one end of inductance L8, potentiometer RP1 left end and adjustable end, the left end of crystal oscillator Y1 connects electrolysis
The anode of capacitor E2, the cathode of electrolytic capacitor E2, the other end of capacitor C18, the other end of resistance R13, inductance L8 the other end
It is all connected with ground, the collector of triode Q3 is separately connected one end of one end of capacitor C16, inductance L7, and the other end of capacitor C16 connects
One end of connecting resistance R12, the other end of resistance R12, the other end of inductance L7, resistance R9 the other end be all connected with power supply+6V, three
The output signal of the current collection of pole pipe Q3 extremely feedback frequency modulation circuit feeds back the emitter of the triode Q1 into frequency modulation circuit；
The amplification output circuit includes capacitor C10, the output signal of one end rate of connections modulation circuit of capacitor C10, capacitor
The other end of C10 is separately connected the base stage of one end of resistance R5, triode Q4, and the emitter of triode Q4 is connected by resistance R4
Ground, the collector of triode Q4 are separately connected one end of one end of resistance R6, capacitor C19, the other end of resistance R5, resistance R6
The other end connects power supply+15V, the anode of the other end connection diode D1 of capacitor C19, and the cathode of diode D1 is separately connected electricity
Feel one end of L9, one end of ground capacity C20, the other end of inductance L9 and one end of ground capacity C21 are amplification output circuit
Output signal, be added on transmitter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811635548.8A CN109443520B (en) | 2018-12-29 | 2018-12-29 | Noise measurement data real-time transmission device |
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| CN201811635548.8A CN109443520B (en) | 2018-12-29 | 2018-12-29 | Noise measurement data real-time transmission device |
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| CN109443520B CN109443520B (en) | 2020-04-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110136423A (en) * | 2019-05-29 | 2019-08-16 | 金居建设发展股份有限公司 | Intelligent site construction environmental detection set |
| CN111049551A (en) * | 2019-12-31 | 2020-04-21 | 郑州航空工业管理学院 | Anti-interference transmission device of network signal |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2247902Y (en) * | 1995-11-16 | 1997-02-19 | 广州雅刚实业有限公司 | High-frequency stereophonic infrared transmission unit |
| CN101132382A (en) * | 2006-08-22 | 2008-02-27 | 捷顶微电子（上海）有限公司 | Frequency modulation transmitter |
| CN101877588A (en) * | 2005-12-06 | 2010-11-03 | 罗姆股份有限公司 | Frequency modulator and the frequency modulation transtation mission circuit that uses it |
| US20130003779A1 (en) * | 2009-12-28 | 2013-01-03 | Furuya Metal Co., Ltd. | Wireless measuring apparatus and wireless temperature measurement system |
| CN103199878A (en) * | 2013-02-16 | 2013-07-10 | 姜秀坤 | High-performance frequency modulation emitter |
| US20150377741A1 (en) * | 2014-06-27 | 2015-12-31 | Goodrich Corporation | Wheel monitoring system |
| US20170257137A1 (en) * | 2016-03-03 | 2017-09-07 | Fujitsu Limited | Active phased array transmitter, active phased array receiver, and active phased array transceiver |
-
2018
- 2018-12-29 CN CN201811635548.8A patent/CN109443520B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2247902Y (en) * | 1995-11-16 | 1997-02-19 | 广州雅刚实业有限公司 | High-frequency stereophonic infrared transmission unit |
| CN101877588A (en) * | 2005-12-06 | 2010-11-03 | 罗姆股份有限公司 | Frequency modulator and the frequency modulation transtation mission circuit that uses it |
| CN101132382A (en) * | 2006-08-22 | 2008-02-27 | 捷顶微电子（上海）有限公司 | Frequency modulation transmitter |
| US20130003779A1 (en) * | 2009-12-28 | 2013-01-03 | Furuya Metal Co., Ltd. | Wireless measuring apparatus and wireless temperature measurement system |
| CN103199878A (en) * | 2013-02-16 | 2013-07-10 | 姜秀坤 | High-performance frequency modulation emitter |
| US20150377741A1 (en) * | 2014-06-27 | 2015-12-31 | Goodrich Corporation | Wheel monitoring system |
| US20170257137A1 (en) * | 2016-03-03 | 2017-09-07 | Fujitsu Limited | Active phased array transmitter, active phased array receiver, and active phased array transceiver |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110136423A (en) * | 2019-05-29 | 2019-08-16 | 金居建设发展股份有限公司 | Intelligent site construction environmental detection set |
| CN111049551A (en) * | 2019-12-31 | 2020-04-21 | 郑州航空工业管理学院 | Anti-interference transmission device of network signal |
| CN111049551B (en) * | 2019-12-31 | 2021-04-02 | 郑州航空工业管理学院 | Anti-interference transmission device of network signal |
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| Publication number | Publication date |
|---|---|
| CN109443520B (en) | 2020-04-14 |
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