CN107483061A - A kind of steamer radio signal propagation device - Google Patents
A kind of steamer radio signal propagation device Download PDFInfo
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- CN107483061A CN107483061A CN201710823370.9A CN201710823370A CN107483061A CN 107483061 A CN107483061 A CN 107483061A CN 201710823370 A CN201710823370 A CN 201710823370A CN 107483061 A CN107483061 A CN 107483061A
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- 230000000087 stabilizing effect Effects 0.000 claims abstract description 28
- 230000005540 biological transmission Effects 0.000 claims description 27
- 239000003990 capacitor Substances 0.000 claims description 24
- 238000001914 filtration Methods 0.000 claims description 5
- 230000003321 amplification Effects 0.000 abstract description 4
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 4
- 230000000644 propagated effect Effects 0.000 abstract 1
- 238000004891 communication Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008054 signal transmission Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009365 direct transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0475—Circuits with means for limiting noise, interference or distortion
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0408—Circuits with power amplifiers
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
- Transmitters (AREA)
Abstract
The invention discloses a kind of steamer radio signal propagation device, including Signal coding circuit, frequency selection circuit, mu balanced circuit and power amplifier radiating circuit, its Signal coding circuit is encoded the signal to be propagated by coding chip, and it is subject to carrier wave output, the input of frequency selection circuit is sent to after RC is filtered, frequency selection circuit produces resonance by LC and carries out frequency-selecting to Signal coding circuit output signal, power amplifier radiating circuit is output to after mu balanced circuit carries out voltage stabilizing again, power amplifier radiating circuit carries out power amplification to mu balanced circuit output signal.The present invention has the advantages of anti-interference and fade resistance is strong, signal propagation is accurate.
Description
Technical Field
The invention relates to a wireless communication technology, in particular to a wireless signal transmitter for a steamship.
Background
Radio communication is used as the main mode of communication between a steamship and the outside, is an important guarantee for steamship navigation safety and crew life safety, and in order to more effectively avoid the interference of noise signals during steamship wireless signal propagation, the technical level of a steamship wireless signal propagator must be continuously improved in development, and particularly, the attenuation resistance and the accuracy of the steamship wireless signal propagator during signal propagation need to be continuously enhanced.
Disclosure of Invention
The invention aims to overcome the defect that the existing ship wireless signal transmission has poor anti-interference and anti-attenuation performance, and provides a ship wireless signal transmitter with strong anti-interference and anti-attenuation performance.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a ship wireless signal propagator, includes signal coding circuit, frequency-selective circuit, voltage stabilizing circuit and power amplifier transmitting circuit, its characterized in that: the signal coding circuit codes a signal to be transmitted through a coding chip, and outputs the signal in a carrier wave manner, the signal is sent to the input end of the frequency selection circuit after being filtered by an RC, the frequency selection circuit generates resonance by an LC to select frequency of the signal output by the signal coding circuit, the signal is output to the power amplifier transmitting circuit after being stabilized by a voltage stabilizing circuit, and the power amplifier transmitting circuit amplifies the power of the signal output by the voltage stabilizing circuit; wherein,
the signal coding circuit comprises a wireless data transmission chip J1 with the model number of SRM1276, the wireless data transmission chip J1 codes ship wireless transmission signals, the ship wireless transmission signals are output from an output port after being loaded, the ship wireless transmission signals are subjected to high-pass filtering processing through a capacitor C1 and a resistor R1 and then are sent to the input end of the frequency selection circuit, the wireless data transmission chip J1 is powered by a +5V power supply, and the ground end of the wireless data transmission chip J1 is grounded.
Preferably, the frequency selection circuit comprises a MOS transistor Q1, the gate of the MOS transistor Q1 receives the output signal of the signal coding circuit, the capacitor C2 is connected in parallel with the inductor L1 to form resonance to perform frequency selection on the output signal of the signal coding circuit, and the output signal is amplified by the MOS transistor Q1 and then output at the source electrode of the signal coding circuit; the grid of the MOS transistor Q1 is connected with one end of a capacitor C2, the drain of the MOS transistor Q1 is connected with one end of an inductor L1, the other end of the capacitor C2 is connected with the other end of the inductor L1 to form a +12V power supply, the source of the MOS transistor Q1 is connected with one end of a resistor R2 and one end of a resistor R3, the other end of the resistor R2 is grounded, and the other end of the resistor R3 is connected with a voltage stabilizing circuit.
Preferably, the voltage stabilizing circuit comprises a resistor R4, a transistor VT1 and a zener diode D1, wherein a part of an output signal of the MOS transistor Q1 is divided by the resistor R3 and then flows into a collector of the transistor VT1, another part of the output signal is divided by the resistor R4 and then flows into a base of the transistor VT1 and a cathode of the transistor D1, an anode of the zener diode D1 is grounded, and an emitter of the transistor VT1 is output to the input terminal of the power amplifier emission circuit.
Preferably, the power amplifier transmitting circuit comprises a capacitor C3, the output signal of the voltage stabilizing circuit is coupled by a capacitor C3 and then flows into the base of a triode VT2, is amplified by a triode VT2 and then is output at the emitter thereof, flows into the base of a triode VT3, is amplified by a triode VT3 and then is output at the emitter thereof, a part of the output signal is coupled by a capacitor C4 and then is sent to the antenna end E1 of the wireless signal transmitter for emission, the other part of the output signal is grounded through a resistor R6, and a +12V power supply is connected with the collector of the triode VT2 and the collector of the VT3 and is connected with the base of the triode VT2 through a resistor R5.
Compared with the prior art, the invention has the following beneficial effects:
1. the wireless data transmission chip J1 encodes the ship wireless transmission signal, carries the signal and then outputs from the output port, because the output signal has certain clutter interference, in order to improve the interference killing feature of the ship wireless signal transmitter, adopt electric capacity C1 and resistance R1 to form high-pass filtering and send to MOS pipe Q1 grid after handling, MOS pipe Q1 has fine temperature stability characteristic, the amplification noise is little, for further accurate signal transmission, adopt electric capacity C2 and feel L1 to connect in parallel and form the resonance and carry out the frequency selection to the signal coding circuit output signal, have very big development value and practical value.
2. The radio signal after frequency selection has instability, a voltage stabilizing circuit is formed by a resistor R4, a triode VT1 and a voltage stabilizing diode D1, the radio signal is effectively stabilized, and the triode VT2 and the triode VT3 form a composite tube by adopting a connection method of a common collector to multiply amplify the radio signal, so that the signal transmitting power is improved, and the attenuation resistance of the ship radio signal transmitter is effectively enhanced.
Drawings
FIG. 1 is a block diagram of a circuit of the present invention;
fig. 2 is a schematic circuit diagram of the present invention.
The labels in the figure are: 1. the device comprises a signal coding circuit, a frequency selection circuit, a voltage stabilizing circuit and a power amplifier transmitting circuit, wherein the frequency selection circuit is 2, the voltage stabilizing circuit is 3, and the power amplifier transmitting circuit is 4.
Detailed Description
The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings of fig. 1 to 2. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
Example one
In fig. 1 and 2, a wireless signal transmitter for a ship comprises a signal coding circuit 1, a frequency selecting circuit 2, a voltage stabilizing circuit 3 and a power amplifier transmitting circuit 4, wherein the signal coding circuit 1 codes a signal to be transmitted through a coding chip and outputs a carrier wave, the signal is sent to an input end of the frequency selecting circuit 2 after being filtered by an RC (resistance-capacitance) filter, the frequency selecting circuit 2 generates resonance by an LC (inductance-capacitance) to select frequency of an output signal of the signal coding circuit and outputs the signal to the power amplifier transmitting circuit 4 after being stabilized by the voltage stabilizing circuit 3, and the power amplifier transmitting circuit 4 amplifies the power of the output signal of the voltage stabilizing circuit 3, so that the antenna end of the wireless signal transmitter has enough transmitting power.
In fig. 2, the signal encoding circuit 1 includes a wireless data transmission chip J1 with model SRM1276, the wireless data transmission chip J1 encodes the ship wireless transmission signal, and outputs the ship wireless transmission signal from an output port after the ship wireless transmission signal is loaded, because the output signal has certain clutter interference, in order to improve the anti-interference capability of the ship wireless signal transmitter, a capacitor C1 and a resistor R1 are adopted to form high-pass filtering processing and then sent to the input end of the frequency selection circuit 2, the wireless data transmission chip J1 is powered by a +5V power supply, and the ground end of the wireless data transmission chip J1 is grounded.
Example two
As shown in fig. 2, based on the first embodiment, the frequency selection circuit includes a MOS transistor Q1, a gate of the MOS transistor Q1 is connected to one end of a capacitor C2, a drain of the MOS transistor Q1 is connected to one end of an inductor L1, the other end of the capacitor C2 and the other end of the inductor L1 are connected to a +12V power supply, a source of the MOS transistor Q1 is connected to one end of a resistor R2 and one end of a resistor R3, the other end of the resistor R2 is grounded, and the other end of the resistor R3 is connected to a voltage regulation circuit. In this embodiment, the MOS transistor Q1 has a good temperature stability, and the amplification noise is small, and the gate of the MOS transistor Q1 is used to receive the output signal of the signal encoding circuit 1. In order to further accurately propagate signals, a capacitor C2 is connected in parallel with an inductor L1 to form resonance, the frequency of the output signals of the signal coding circuit 1 is selected, and the signals are amplified by a MOS transistor Q1 and then output at the source electrode of the signal coding circuit.
EXAMPLE III
As shown in fig. 2, based on the second embodiment, the voltage regulator circuit 3 includes a resistor R4, a transistor VT1, and a zener diode D1, wherein a part of the output signal of the MOS transistor Q1 is divided by the resistor R3 and then flows into the collector of the transistor VT1, another part of the output signal is divided by the resistor R4 and then flows into the base of the transistor VT1 and the cathode of the zener diode D1, the anode of the zener diode D1 is grounded, and the emitter of the transistor VT1 is output to the input terminal of the power amplifier emission circuit 4. In the embodiment, the frequency-selected wireless signal has instability, and the voltage stabilizing circuit is formed by the resistor R4, the triode VT1 and the voltage stabilizing diode D1, so that the wireless signal is effectively stabilized.
Example four
As shown in fig. 2, based on the third embodiment, the power amplifier transmitting circuit 4 includes a capacitor C3, an output signal of the frequency-selecting voltage-stabilizing circuit is coupled by the capacitor C3, flows into a base of a transistor VT2, is amplified by the transistor VT2, is output at an emitter thereof, flows into a base of a transistor VT3, is amplified by the transistor VT3, is output at an emitter thereof, is coupled by the capacitor C4, is partially sent to an antenna terminal E1 of the wireless signal transmitter for emission, is grounded at the other part through a resistor R6, and is connected with a collector of the transistor VT2 and a collector of the VT3 through a resistor R5 and is connected with the base of the transistor VT 2. In the embodiment, in order to avoid the influence of a direct current signal, the capacitor C3 is used for coupling the output signal of the voltage stabilizing circuit, the coupled signal power is not enough for direct transmission, and the triode VT2 and VT3 are connected with a common collector to form a composite tube so as to multiply and amplify the wireless signal and improve the signal transmission power.
When the wireless data transmission device is used, a wireless data transmission chip J1 encodes a ship wireless transmission signal, the ship wireless transmission signal is output from an output port after being carried, and as the output signal has certain clutter interference, in order to improve the anti-interference capability of the ship wireless signal transmitter, a capacitor C1 and a resistor R1 are adopted to form high-pass filtering processing and then are sent to the grid electrode of an MOS tube Q1, and the MOS tube Q1 has good temperature stability and small amplification noise; in order to further accurately transmit signals, a capacitor C2 and a sensor L1 are connected in parallel to form resonance to carry out frequency selection on signals output by the signal coding circuit 1, the wireless signals after frequency selection have instability, a voltage stabilizing circuit is formed by a resistor R4, a triode VT1 and a voltage stabilizing diode D1 to effectively stabilize the wireless signals, and then the triodes VT2 and VT3 form a composite tube by adopting a common collector electrode connection method to multiply and amplify the wireless signals, so that the signal transmitting power is improved, the attenuation resistance and the stability of a wireless signal transmitter of a ship are effectively enhanced, and the wireless signal transmitter has great development value and practical value.
While the invention has been described in further detail with reference to specific embodiments thereof, it is not intended that the invention be limited to the specific embodiments thereof; for those skilled in the art to which the present invention pertains and related technologies, the extension, operation method and data replacement should fall within the protection scope of the present invention based on the technical solution of the present invention.
Claims (4)
1. The utility model provides a ship wireless signal propagator, includes signal coding circuit, frequency-selective circuit, voltage stabilizing circuit and power amplifier transmitting circuit, its characterized in that: the signal coding circuit codes a signal to be transmitted through a coding chip, and outputs the signal in a carrier wave manner, the signal is sent to the input end of the frequency selection circuit after being filtered by an RC, the frequency selection circuit generates resonance by an LC to select frequency of the signal output by the signal coding circuit, the signal is output to the power amplifier transmitting circuit after being stabilized by the voltage stabilizing circuit, and the power amplifier transmitting circuit amplifies the power of the signal output by the voltage stabilizing circuit; wherein,
the signal coding circuit comprises a wireless data transmission chip J1 with the model number of SRM1276, the wireless data transmission chip J1 codes ship wireless transmission signals, the ship wireless transmission signals are output from an output port after being loaded, the ship wireless transmission signals are subjected to high-pass filtering processing through a capacitor C1 and a resistor R1 and then are sent to the input end of the frequency selection circuit, the wireless data transmission chip J1 is powered by a +5V power supply, and the ground end of the wireless data transmission chip J1 is grounded.
2. A wireless signal propagator for a wheeled ship according to claim 1, further comprising: the frequency selection circuit comprises an MOS tube Q1, the grid electrode of the MOS tube Q1 receives the output signal of the signal coding circuit, a capacitor C2 is connected with an inductor L1 in parallel to form resonance to perform frequency selection on the output signal of the signal coding circuit, and the output signal is amplified by the MOS tube Q1 and then output at the source electrode of the signal coding circuit; the grid of the MOS transistor Q1 is connected with one end of a capacitor C2, the drain of the MOS transistor Q1 is connected with one end of an inductor L1, the other end of the capacitor C2 is connected with the other end of the inductor L1 to form a +12V power supply, the source of the MOS transistor Q1 is connected with one end of a resistor R2 and one end of a resistor R3, the other end of the resistor R2 is grounded, and the other end of the resistor R3 is connected with a voltage stabilizing circuit.
3. A wireless signal propagator for a wheeled ship according to claim 2, further comprising: the voltage stabilizing circuit comprises a resistor R4, a triode VT1 and a voltage stabilizing diode D1, wherein a part of an output signal of an MOS transistor Q1 flows into a collector of the triode VT1 after being subjected to voltage division by a resistor R3, the other part of the output signal flows into a base of the triode VT1 and a cathode of the voltage stabilizing diode D1 after being subjected to voltage division by a resistor R4, an anode of the voltage stabilizing diode D1 is grounded, and an emitter of the triode VT1 is output to an input end of the power amplifier emission circuit.
4. A wireless signal propagator for a wheeled ship according to claim 1, further comprising: the power amplifier transmitting circuit comprises a capacitor C3, an output signal of the voltage stabilizing circuit is coupled by a capacitor C3 and then flows into a base electrode of a triode VT2, is amplified by a triode VT2 and then is output at an emitter electrode of the triode VT3, is amplified by a triode VT3 and then is output at an emitter electrode of the triode VT 4935, a part of the output signal is coupled by a capacitor C4 and then is sent to an antenna end E1 of the wireless signal transmitter for emission, the other part of the output signal is grounded through a resistor R6, a +12V power supply is connected with a collector electrode of the triode VT2 and a collector electrode of the VT3, and is connected with a base electrode of a triode VT 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710823370.9A CN107483061A (en) | 2017-09-13 | 2017-09-13 | A kind of steamer radio signal propagation device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710823370.9A CN107483061A (en) | 2017-09-13 | 2017-09-13 | A kind of steamer radio signal propagation device |
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| CN107483061A true CN107483061A (en) | 2017-12-15 |
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| CN201710823370.9A Pending CN107483061A (en) | 2017-09-13 | 2017-09-13 | A kind of steamer radio signal propagation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109044291A (en) * | 2018-07-03 | 2018-12-21 | 许少辉 | System is monitored based on Internet of Things hospital patient |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109044291A (en) * | 2018-07-03 | 2018-12-21 | 许少辉 | System is monitored based on Internet of Things hospital patient |
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Application publication date: 20171215 |