CN111815926A - System and method for meteorological data wireless transmission - Google Patents
System and method for meteorological data wireless transmission Download PDFInfo
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- CN111815926A CN111815926A CN202010409185.7A CN202010409185A CN111815926A CN 111815926 A CN111815926 A CN 111815926A CN 202010409185 A CN202010409185 A CN 202010409185A CN 111815926 A CN111815926 A CN 111815926A
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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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
- H04B1/06—Receivers
- H04B1/16—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
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/12—Modulator circuits; Transmitter circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/14—Demodulator circuits; Receiver circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/16—Frequency regulation arrangements
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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
- H04B2001/0408—Circuits with power amplifiers
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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
- H04B2001/0491—Circuits with frequency synthesizers, frequency converters or modulators
Abstract
The invention provides a system for meteorological data wireless transmission, which comprises a transmitting modulation module, a power amplifier unit, an antenna and a receiving module. The transmitting modulation module decodes and extracts serial port data converted by the data conversion chip, encodes the decoded and extracted data to form debugging signal data, modulates the debugging signal data to form an L-waveband radio-frequency signal and transmits the L-waveband radio-frequency signal to the power amplifier unit. The amplifier unit amplifies the radio frequency signal and transmits the radio frequency signal to the antenna. The antenna transmits the amplified radio frequency signal. The receiving module receives radio frequency signals transmitted by the antenna. The invention also provides a method. The system and the method can realize the unidirectional long-distance narrow-band wireless transmission based on the L wave band, thereby realizing the point-to-point wireless data transmission of the ground meteorological station and the high-altitude meteorological observation system, simplifying the operation mode to the great extent, reducing the cost and improving the data transmission quality and quantity.
Description
Technical Field
The invention relates to the technical field of wireless transmission, in particular to a system and a method for wireless transmission of meteorological data.
Background
In the high-altitude meteorological detection system, a narrow-band communication system adopts a U wave band to perform data one-way transmission from high altitude to a ground receiving system, but cannot realize the instruction control of the ground on a high-altitude detector. The existing transmission mode ground radar has high construction cost, complex operation and inflexible application.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art, and provide a system and a method for meteorological data wireless transmission, which can realize unidirectional long-distance narrow-band wireless transmission based on L wave band, thereby realizing point-to-point wireless data transmission of a ground meteorological station and an overhead meteorological observation system, simplifying operation mode to a great extent, reducing cost and improving data transmission quality and quantity.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a system for meteorological data wireless transmission comprises a transmitting modulation module, a power amplifier unit, an antenna and a receiving module. The transmitting modulation module decodes and extracts serial port data converted by the data conversion chip, encodes the decoded and extracted data to form debugging signal data, modulates the debugging signal data to form an L-waveband radio-frequency signal and transmits the L-waveband radio-frequency signal to the power amplifier unit. The amplifier unit amplifies the radio frequency signal and transmits the radio frequency signal to the antenna. The antenna transmits the amplified radio frequency signal. The receiving module receives radio frequency signals transmitted by the antenna.
According to the system for meteorological data wireless transmission, under the cooperation of the transmitting modulation module, the power amplifier unit, the antenna and the receiving module, serial port data can be decoded, extracted, coded and modulated to form L-waveband radio frequency signals, the L-waveband radio frequency signals are transmitted to the power amplifier unit to be amplified and then transmitted out through the antenna, and data receiving work is completed through the receiving module, so that unidirectional long-distance narrow-band wireless transmission based on L wavebands can be realized, point-to-point wireless data transmission of a ground meteorological station and a high-altitude meteorological observation system can be realized, the operation mode is greatly simplified, the cost is reduced, and the data transmission quality and quantity are improved.
With respect to the above technical solution, further improvements as described below can be made.
According to the system for the wireless transmission of meteorological data of the invention, in a preferred embodiment, the transmitting and modulating module comprises a first MCU chip and a signal modulating unit. The first MCU chip decodes and extracts the serial port data converted by the data conversion chip and encodes the decoded and extracted data to form debugging signal data. In addition, the first MCU chip transmits the debug signal data to the signal modulation unit. The signal modulation unit modulates the debugging signal data to form an L-waveband radio-frequency signal.
The transmitting modulation module with the structure can well realize the functions of the transmitting modulation module and can ensure the reliability of data conversion, modulation and transmission.
Specifically, in a preferred embodiment, the amplifier unit includes a power amplifier circuit, a low pass filter, a coupler, and an antenna interface. The L-band radio frequency signal is input into the power amplification circuit through the radio frequency line, amplified and input into the low-pass filter, and then transmitted to the antenna through the coupler and the antenna interface through the feeder line.
The amplifier unit with the structure can amplify radio frequency signals, and the low-pass filter can filter out harmonic waves, so that the communication distance and the signal transmission quality can be effectively improved.
Further, in a preferred embodiment, the power amplifier circuit includes at least two driver stages.
The radio-frequency signal is amplified in multiple stages by adopting the high-power amplifier, so that the communication distance and the signal transmission quality can be further ensured to be improved.
Further, in a preferred embodiment, the coupler couples out forward transmitted power and reflected power.
The forward transmitting power is output through detection and fed back to the power amplifier circuit for power control. The reflected power output signal is detected to indicate the matching degree of the antenna interface, and when the reflection is too large, a power reduction mode is adopted to protect the transmitter from being damaged.
In particular, in a preferred embodiment, the receiving module comprises a sonometer resonator and a low noise amplifier.
The radio frequency front end of the receiving module comprises two receiving frequency bands, a sound meter resonator and a low noise amplifier with high linearity and high gain are selected to form the receiving module, and therefore the receiving module is guaranteed to achieve high sensitivity, linearity and anti-interference performance.
Further, in a preferred embodiment, the receiving module further includes a mixer, and the mixer adopts a broadband radio frequency mixer.
The mixer adopts a high-performance broadband radio frequency mixer, can improve the linearity and the dynamic range of a receiving system on the premise of ensuring certain frequency conversion loss, and can also counteract the nonlinear combined frequency component generated by partial frequency mixing, thereby improving the anti-interference performance of the system.
According to a second aspect of the invention, a method for wireless transmission of meteorological data is implemented by using the system for wireless transmission of meteorological data. The method specifically comprises the following steps: s01: the transmitting modulation module is used for decoding and extracting serial port data converted by the data conversion chip, encoding the decoded and extracted data to form debugging signal data, modulating the debugging signal data to form an L-waveband radio-frequency signal and transmitting the L-waveband radio-frequency signal to the power amplifier unit. And S02, amplifying the radio frequency signal by using a power amplifier unit and transmitting the radio frequency signal to an antenna. And S03, transmitting the amplified radio frequency signal by using an antenna. And S04, the receiving module receives the radio frequency signal transmitted by the antenna.
Based on the system for meteorological data wireless transmission, the method for meteorological data wireless transmission can realize unidirectional long-distance narrow-band wireless transmission based on L wave band, thereby realizing point-to-point wireless data transmission of a ground meteorological station and an overhead meteorological observation system, simplifying operation mode to a great extent, reducing cost and improving data transmission quality and quantity.
With respect to the above technical solution, further improvements as described below can be made.
According to the method for the weather data wireless transmission of the embodiment of the second aspect of the invention, in a preferred implementation manner, in S01, the transmitting modulation module modulates the debugging signal data on the 405MHz radio frequency signal and mixes the signals with 1270MHz, so as to obtain the L-band radio frequency signal with the frequency band of 1665MHz to 1690 MHz.
The L-band radio frequency signal with the frequency band between 1665MHz and 1690MHz formed by the modulation mode can well ensure the quality of point-to-point wireless data transmission of the ground meteorological station and the high-altitude meteorological observation system.
Further, in a preferred embodiment, in S04, the receiving module includes a mixer, a band pass filter, a two-stage if amplifier, an if demodulation chip, an spi (serial Peripheral interface) interface, and a second MCU chip. The intermediate frequency signal output by the mixer realizes first-stage narrow-band channel selection through the band-pass filter, enters the intermediate frequency demodulation chip through the two-stage intermediate frequency buffer amplifier, the SPI transmits the digital signal obtained by the demodulation of the intermediate frequency demodulation chip to the second MCU chip to complete data receiving work, and finally, the data message is output through the serial port.
The receiving module based on the structure can well complete the point-to-point wireless transmission work of meteorological data and can conveniently obtain data messages in real time.
Compared with the prior art, the invention has the advantages that: the system can realize unidirectional remote narrow-band wireless transmission based on the L wave band, thereby realizing point-to-point wireless data transmission of the ground meteorological station and the high-altitude meteorological observation system, simplifying the operation mode to a great extent, reducing the cost and improving the data transmission quality and quantity.
Drawings
The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings. Wherein:
FIG. 1 schematically illustrates the framework principles of a system for wireless transmission of meteorological data according to an embodiment of the present invention;
fig. 2 schematically shows the framework principle of the transmission modulation module of an embodiment of the invention;
fig. 3 schematically shows the framework principle of the power amplifier unit of an embodiment of the invention;
fig. 4 schematically shows the framework principle of the receiving module of an embodiment of the invention.
In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
Detailed Description
The invention will be further explained in detail with reference to the figures and the embodiments without thereby limiting the scope of protection of the invention.
FIG. 1 schematically illustrates the framework principles of a system 10 for wireless transmission of meteorological data in accordance with an embodiment of the present invention. Fig. 2 schematically shows the framework principle of the transmission modulation module of an embodiment of the present invention. Fig. 3 schematically shows the framework principle of the power amplifier unit of the embodiment of the present invention. Fig. 4 schematically shows the framework principle of the receiving module of an embodiment of the invention.
As shown in fig. 1, a system 10 for wireless transmission of meteorological data according to an embodiment of the present invention includes a transmitting and modulating module, a power amplifier unit, an antenna, and a receiving module. The transmitting modulation module decodes and extracts serial port data converted by the data conversion chip, encodes the decoded and extracted data to form debugging signal data, modulates the debugging signal data to form an L-waveband radio-frequency signal and transmits the L-waveband radio-frequency signal to the power amplifier unit. The amplifier unit amplifies the radio frequency signal and transmits the radio frequency signal to the antenna. The antenna transmits the amplified radio frequency signal. The receiving module receives radio frequency signals transmitted by the antenna.
According to the system for meteorological data wireless transmission provided by the embodiment of the invention, under the coordination of the transmitting modulation module, the power amplifier unit, the antenna and the receiving module, serial port data can be decoded, extracted, coded and modulated to form L-waveband radio frequency signals, the L-waveband radio frequency signals are transmitted to the power amplifier unit to be amplified and then transmitted out through the antenna, and the data receiving work is completed through the receiving module, so that the unidirectional long-distance narrow-band wireless transmission based on the L waveband can be realized, the point-to-point wireless data transmission of a ground meteorological station and a high-altitude meteorological observation system can be realized, the operation mode is greatly simplified, the cost is reduced, and the data transmission quality and quantity are improved.
Specifically, as shown in fig. 1 and fig. 2, in the present embodiment, the transmission modulation module includes a first mcu (microcontroller unit) chip and a signal modulation unit. The first MCU chip decodes and extracts the serial port data converted by the data conversion chip and encodes the decoded and extracted data to form debugging signal data. In addition, the first MCU chip transmits the debug signal data to the signal modulation unit. The signal modulation unit modulates the debugging signal data to form an L-waveband radio-frequency signal. The transmitting modulation module with the structure can well realize the functions of the transmitting modulation module and can ensure the reliability of data conversion, modulation and transmission.
Preferably, in this embodiment, the signal modulation unit modulates the data information to the radio frequency signal with the corresponding frequency by using an advanced digital modulation method, and then transmits the radio frequency signal through a corresponding communication channel, so that modulation in a mode including FSK, GFSK, OOK and the like can be realized.
As shown in fig. 3, in this embodiment, the amplifier unit includes a power amplifier circuit, a low pass filter, a coupler, and an antenna interface. The L-band radio frequency signal is input into the power amplification circuit through a radio frequency line, is subjected to multistage amplification, is amplified to 50W and is output, passes through the low-pass filter, and then is transmitted to the antenna through the coupler and the antenna interface through the feeder line. The amplifier unit with the structure can amplify radio frequency signals, and the low-pass filter can filter out harmonic waves, so that the communication distance and the signal transmission quality can be effectively improved. Preferably, in this embodiment, the multi-stage amplification power discharge circuit performs power adjustment and parameter setting through the third MCU chip to ensure convenience and accuracy of signal amplification. Further, in this embodiment, the power amplifier circuit includes at least two driving stages, preferably three driving stages. The radio-frequency signal is amplified in multiple stages by adopting the high-power amplifier, so that the communication distance and the signal transmission quality can be further ensured to be improved. Further, in this embodiment, the coupler couples out forward transmitted power and reflected power. The forward transmitting power is output through detection and fed back to the power amplifier circuit for power control. The reflected power output signal is detected to indicate the matching degree of the antenna interface, and when the reflection is too large, a power reduction mode is adopted to protect the transmitter from being damaged.
As shown in fig. 4, specifically, in the present embodiment, the receiving module includes a sound surface resonator and a low noise amplifier. Preferably, the amplified radio frequency signal enters the receiving module through an 1/4-wavelength antenna, the radio frequency front end of the receiving module comprises two receiving frequency bands, a selected acoustic surface resonator (1665 MHz-1690 MHz) and a low noise amplifier LNA with high linearity and high gain, so that the receiving module is ensured to realize extremely high sensitivity, linearity and anti-interference performance. Further, in this embodiment, the receiving module further includes a mixer, and the mixer adopts a broadband radio frequency mixer. The mixer adopts a high-performance broadband radio frequency mixer, can improve the linearity and the dynamic range of a receiving system on the premise of ensuring certain frequency conversion loss, and can also counteract the nonlinear combined frequency component generated by partial frequency mixing, thereby improving the anti-interference performance of the system.
Preferably, in the present embodiment, as shown in fig. 1, the antenna is a circularly polarized antenna, which can reduce the azimuth sensitivity of the system to the antenna, and is thus particularly suitable for a system for radio transmission of meteorological data.
A method for wireless transmission of weather data according to the second aspect of the invention is implemented using the system 10 for wireless transmission of weather data described above. The method specifically comprises the following steps: s01: the transmitting modulation module is used for decoding and extracting serial port data converted by the data conversion chip, encoding the decoded and extracted data to form debugging signal data, modulating the debugging signal data to form an L-waveband radio-frequency signal and transmitting the L-waveband radio-frequency signal to the power amplifier unit. And S02, amplifying the radio frequency signal by using a power amplifier unit and transmitting the radio frequency signal to an antenna. And S03, transmitting the amplified radio frequency signal by using an antenna. And S04, the receiving module receives the radio frequency signal transmitted by the antenna. Based on the system for meteorological data wireless transmission, the method for meteorological data wireless transmission can realize unidirectional long-distance narrow-band wireless transmission based on L wave band, thereby realizing point-to-point wireless data transmission of a ground meteorological station and an overhead meteorological observation system, simplifying operation mode to a great extent, reducing cost and improving data transmission quality and quantity.
In the method for the weather data wireless transmission according to the embodiment of the second aspect of the present invention, as shown in fig. 2, specifically, in S01, the transmitting modulation module modulates the debugging signal data on the 405MHz radio frequency signal and mixes the signal with 1270MHz, and after passing through the low noise amplifier LNA, the L-band radio frequency signal with the frequency band between 1665MHz and 1690MHz is obtained. The L-band radio frequency signal with the frequency band between 1665MHz and 1690MHz formed by the modulation mode can well ensure the quality of point-to-point wireless data transmission of the ground meteorological station and the high-altitude meteorological observation system.
Further, as shown in fig. 4, in the present embodiment, in S04, the receiving module includes a mixer, a band-pass filter, a two-stage intermediate frequency amplifier, an intermediate frequency demodulation chip, an SPI interface, and a second MCU chip. The intermediate frequency (897MHz) signal output by the mixer realizes one-level narrow-band channel selection through a band-pass filter, enters an intermediate frequency demodulation chip through two stages of intermediate frequency buffer amplifiers, and the SPI interface transmits a digital signal obtained through demodulation of the intermediate frequency demodulation chip to a second MCU chip to complete data receiving work, and finally outputs a data message through a serial port. The receiving module based on the structure can well complete the point-to-point wireless transmission work of meteorological data and can conveniently obtain data messages in real time.
Specifically, in this embodiment, the receiving module employs a SAW frequency stabilization, a one-time frequency conversion architecture and a superheterodyne receiving chip scheme, and utilizes circuits such as a low-noise high-frequency amplifier, a mixer, a local oscillator, an intermediate frequency amplifier, an intermediate frequency filter, and a comparator inside an integrated chip to perform undersampling and digitizing processing on signals, so as to implement demodulation of various digital signals, including FSK, GFSK, OOK, and the like. The serial port is used for sending the data to the host computer, and various working states are displayed through the indicating lamp.
According to the embodiments, it can be seen that the system and the method for meteorological data wireless transmission according to the present invention can implement unidirectional long-distance narrowband wireless transmission based on L-band, and therefore can implement point-to-point wireless data transmission of a ground meteorological station and an overhead meteorological observation system, thereby greatly simplifying the operation mode, reducing the cost, and improving the data transmission quality and quantity.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. A system for meteorological data wireless transmission is characterized by comprising a transmitting modulation module, a power amplifier unit, an antenna and a receiving module; wherein the content of the first and second substances,
the transmitting modulation module decodes and extracts serial port data converted by the data conversion chip, encodes the decoded and extracted data to form debugging signal data, modulates the debugging signal data to form an L-waveband radio-frequency signal and transmits the L-waveband radio-frequency signal to the power amplifier unit;
the power amplifier unit amplifies the radio frequency signal and transmits the radio frequency signal to the antenna;
the antenna transmits the amplified radio frequency signal;
the receiving module receives the radio frequency signal transmitted from the antenna.
2. The system for weather data wireless transmission of claim 1, wherein the transmitting modulation module includes a first MCU chip and a signal modulation unit;
the first MCU chip decodes and extracts serial port data converted by the data conversion chip and encodes the decoded and extracted data to form debugging signal data; in addition, the first MCU chip transmits the debugging signal data to the signal modulation unit;
and the signal modulation unit modulates the debugging signal data to form an L-waveband radio frequency signal.
3. The system for meteorological data wireless transmission according to claim 1 or 2, wherein the power amplifier unit comprises a power amplifier circuit, a low-pass filter, a coupler and an antenna interface; wherein the content of the first and second substances,
the L-band radio frequency signal is input into the power amplification circuit through a radio frequency line, amplified and input into the low-pass filter, and then transmitted to the antenna through the coupler and the antenna interface through a feeder line.
4. The system for weather data wireless transmission of claim 3, wherein the power amplifier circuit includes at least two driver stages.
5. The system for wireless transmission of meteorological data according to claim 3, wherein the coupler couples out forward transmitted power and reflected power.
6. The system for wireless transmission of meteorological data according to claim 1 or 2, wherein the receiving module comprises a sound meter resonator and a low noise amplifier.
7. The system for weather data wireless transmission of claim 6, wherein the receiving module further comprises a mixer, the mixer being a broadband radio frequency mixer.
8. A method for the wireless transmission of meteorological data, characterized by being implemented with a system for the wireless transmission of meteorological data according to any one of the preceding claims 1 to 7; the method comprises the following steps:
s01: adopting the emission modulation module to decode and extract serial port data converted by the data conversion chip, encoding the decoded and extracted data to form debugging signal data, modulating the debugging signal data to form an L-waveband radio-frequency signal and transmitting the L-waveband radio-frequency signal to the power amplifier unit;
s02, amplifying the radio frequency signal by using the power amplifier unit and transmitting the radio frequency signal to the antenna;
s03, transmitting the amplified radio frequency signal by the antenna;
and S04, the receiving module receives the radio frequency signal transmitted by the antenna.
9. The method for weather data wireless transmission according to claim 8, wherein in the S01, the transmitting and modulating module modulates the debugging signal data on a 405MHz radio frequency signal and mixes the signals with 1270MHz, so as to obtain the L-band radio frequency signal with a frequency band of 1665MHz to 1690 MHz.
10. The method for meteorological data wireless transmission according to claim 8 or 9, wherein in S04, the receiving module comprises a mixer, a band-pass filter, a two-stage intermediate frequency amplifier, an intermediate frequency demodulation chip, an SPI interface and a second MCU chip; wherein the content of the first and second substances,
the intermediate frequency signal output by the frequency mixer realizes one-level narrow-band channel selection through the band-pass filter, enters the intermediate frequency demodulation chip through the two-level intermediate frequency buffer amplifier, and the SPI interface transmits the digital signal obtained by demodulation of the intermediate frequency demodulation chip to the second MCU chip to complete data reception.
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| CN112612226A (en) * | 2020-12-09 | 2021-04-06 | 武汉波诺电子科技有限公司 | Wireless setting device of intelligence ammunition |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112612226A (en) * | 2020-12-09 | 2021-04-06 | 武汉波诺电子科技有限公司 | Wireless setting device of intelligence ammunition |
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