CN217721202U - Doppler very high frequency omnidirectional beacon on-site monitoring system - Google Patents
Doppler very high frequency omnidirectional beacon on-site monitoring system Download PDFInfo
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- CN217721202U CN217721202U CN202121661037.0U CN202121661037U CN217721202U CN 217721202 U CN217721202 U CN 217721202U CN 202121661037 U CN202121661037 U CN 202121661037U CN 217721202 U CN217721202 U CN 217721202U
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Abstract
The utility model provides a Doppler very high frequency omnidirectional beacon on-site monitoring system, include: the radio frequency amplifier is used for filtering, amplifying and shaping signals received back by the monitoring antenna and sending the signals to the digital signal processing unit for resolving; the digital signal processing unit includes: the monitoring device comprises an FPGA chip, a DSP chip, an RTC chip, an RS232 serial port chip, an FRAM FLASH memory chip, an FLASH chip, a DA chip and an AD chip, wherein signals received by a monitoring antenna are preprocessed and resolved, and are sent to a main control unit, a remote control unit and a display control unit through the RS232 serial port, so that the signals of the monitoring device are monitored.
Description
Technical Field
The utility model relates to a Doppler high frequency technical field, in particular to Doppler very high frequency omnidirectional beacon on-site monitoring system.
Background
In recent years, with the increasing number of airport navigation devices at home and abroad, the requirements on the devices are higher and higher. The monitoring of the former generation of Doppler very high frequency omnidirectional beacons is a far field monitoring mode, the distance between a monitoring antenna and a station is about 80-200 meters, the occupied area is large, the maintenance cost of an airport is high, and a lot of difficulties are brought to daily maintenance work. In response to this situation of the current devices, the relevant developers have been studying how to solve and optimize.
SUMMERY OF THE UTILITY MODEL
The purpose of the present invention is to solve at least one of the technical drawbacks.
Therefore, the utility model aims to provide a doppler very high frequency omnidirectional beacon field monitoring system.
In order to achieve the above object, an embodiment of the present invention provides a doppler very high frequency omnidirectional beacon on-site monitoring system, including: a radio frequency amplifier unit and a digital signal processing unit, wherein,
the radio frequency amplifier unit includes: the monitoring system comprises a radio frequency amplifier, a numerical control attenuation chip and a 50MHz signal generator, wherein the radio frequency amplifier is connected with a monitoring signal, the input end of the radio frequency amplifier is connected with the output end of the numerical control attenuation chip, the input end of the numerical control attenuation chip is connected with a digital signal processing unit, the input end of the radio frequency amplifier is connected with the output end of the 50MHz signal generator, and the output end of the 50MHz signal generator is further connected with the digital signal processing unit; the radio frequency amplifier is used for filtering, amplifying and shaping signals received back by the monitoring antenna, and sending the signals to the digital signal processing unit for resolving;
the digital signal processing unit includes: the device comprises an FPGA chip, a DSP chip, an RTC chip, an RS232 serial port chip, an FRAM FLASH memory chip, an FLASH chip, a DA chip and an AD chip, wherein the FPGA chip is connected with the RS232 serial port chip in a bidirectional mode, and the RS232 serial port chip exchanges data with an external main control unit, a remote control unit and a display control unit;
the output end of the FPGA chip is connected with the input end of the numerical control attenuation chip, the input end of the FPGA chip is further connected with the output end of a 50MHz signal generator, the output end of the FPGA chip is connected with the input end of the DA chip, and the input end of the FPGA chip is connected with the output end of the AD chip; the AD chip is used for collecting analog data, the combined processor of the FPGA chip and the DSP chip provides system time through the RTC chip, and parameters of the system are stored through the FRAM flash memory chip;
the DSP chip is in bidirectional connection with the FPGA chip, the input end of the DSP chip is connected with the output end of the RTC chip, and the DSP chip is in bidirectional connection with the FRAM FLASH memory chip and the FLASH chip.
And further, the digital quantity acquisition and output control device also comprises an I2C interface, and the digital quantity acquisition and output control are carried out through an input and output unit expanded by an I2C bus.
Further, the signals transmitted through the I2C bus include: alarm and bypass of the monitor, on-off signal of the transmitter, buzzer signal, metal key signal and indicator light signal.
Furthermore, the display control unit provides an external liquid crystal screen for displaying and adopts an LVDS interface for communication.
Furthermore, the FPGA chip adopts an FPGA chip with the model number of EP4CE55F23I 7; the DSP chip adopts a DSP chip with the model of TMS320C6713BGDPA200
According to the utility model discloses Doppler very high frequency omnidirectional beacon on-site monitoring system, this system area is little, and monitoring antenna only need install in the ground net edge can realize that monitoring function, stability to this field signal are strong, communication rate is high, and communication response is fast, small, interference immunity is strong, reduces multiple advantages such as user maintenance cost.
The utility model has the advantages that: the monitoring system of the utility model is in-situ monitoring, which is about 18 meters away from the center of the antenna, thus greatly reducing the airport land and providing great convenience for the daily maintenance of customers; the former generation monitoring system is far field monitoring, is about 80-200 meters away from the center of the antenna, is very inconvenient for daily maintenance, and simultaneously increases the use cost of more places for customers.
The monitoring system has the advantages of good expandability, accurate monitoring information, high communication speed and good performance, and the serial port communication speed is improved compared with that of the previous generation. The system provides a good human-computer interface, and remote control of the monitoring system can be realized through the remote controller. The control system of the prior generation does not have a remote controller and can not realize remote control. The system cost is reduced, and the selected raw materials are stable and reliable industrial devices on the market, so that the purchase period and the production period are both shortened, and the cost is reduced by 30 percent compared with the cost of the control system of the prior generation. Due to the optimized upgrade of components, the volume of the system is also reduced, and the installation, debugging and maintenance are more convenient. After the system is successfully researched and developed, the Doppler very high frequency omnidirectional beacon system can be quickly used in Doppler very high frequency omnidirectional beacon equipment, is more suitable for the requirement of the environment, is also applied to some complex environments, and can be more suitable for working for a long time under the complex electromagnetic environment than the modern monitoring system.
In a word, the monitoring system has a serial port communication function, an IO control acquisition function and an AD acquisition function. The monitoring system has the advantages of good universality, good expandability, strong stability, high communication rate, fast communication response, small volume and strong anti-interference performance, and can be used for navigation equipment such as Dvor and the like. The monitoring system can also be used in other navigation equipment.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a structural diagram of a doppler very high frequency omnidirectional beacon presence monitoring system according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary intended for explaining the present invention, and should not be construed as limiting the present invention.
The utility model provides a Doppler very high frequency omnidirectional beacon on-site monitoring system for Doppler very high frequency omnidirectional beacon's signal on-site monitoring.
As shown in fig. 1, the present invention provides a doppler very high frequency omnidirectional beacon on-site monitoring system, including: a radio frequency amplifier unit 1 and a digital signal processing unit 2.
Specifically, the radio frequency amplifier unit 1 includes: the digital monitoring system comprises a radio frequency amplifier 100, a numerical control attenuation chip 200 and a 50MHz signal generator 300, wherein the radio frequency amplifier 100 is connected with a monitoring signal, the input end of the radio frequency amplifier 100 is connected with the output end of the numerical control attenuation chip 200, the input end of the numerical control attenuation chip 200 is connected with a digital signal processing unit 2, the input end of the radio frequency amplifier 100 is connected with the output end of the 50MHz signal generator 300, and the output end of the 50MHz signal generator 300 is further connected with the digital signal processing unit 2; the rf amplifier 100 is configured to filter, amplify, and shape a signal received by the monitoring antenna, and send the signal to the digital signal processing unit 2 for calculation. It should be noted that the power of the signal can be digitally controlled by the signal processor. The rf amplifier unit 1 further includes an rf signal power divider chip.
The digital signal processing unit 2 includes: FPGA chip 500, DSP chip 400, RTC chip 600, RS232 serial port chip 700, FRAM FLASH memory chip 800, FLASH chip 900, DA chip 1000 and AD chip 1100, wherein, FPGA chip 500 and RS232 serial port chip 700 both way junction, RS232 serial port chip 700 and outside master control unit, remote control unit and display control unit carry out data interchange, wherein, FPGA chip 500 and DSP chip 400 carry out preliminary treatment and solve through the signal that receives to the monitoring antenna, and send for master control unit, remote control unit and display control unit through the RS232 serial port, in order to reach the monitoring to the signal of this equipment. Particularly, the control system carries out serial communication on the RS232 serial port, can compile a communication protocol according to specific application, realizes a complete serial communication function, and realizes serial communication with the compass module, the Beidou module and the wireless module in the equipment.
The output end of the FPGA chip 500 is connected with the input end of the numerical control attenuation chip 200, the input end of the FPGA chip 500 is further connected with the output end of the 50MHz signal generator 300, the output end of the FPGA chip 500 is connected with the input end of the DA chip 1000, and the input end of the FPGA chip 500 is connected with the output end of the AD chip 1100; the AD chip 1100 is used to collect analog data, the combined processor of the FPGA chip 500 and the DSP chip 400 provides system time through the RTC chip 600, and stores parameters of the system through the FRAM flash memory chip.
Specifically, the AD chip 1100 collects radio frequency analog input signals. The embodiment of the utility model provides an in, AD chip 1100 can adopt the model to be AD 9245's AD chip 1100, carries out analog data's collection, and input resolution is 14 bits, 14 way AD promptly to carry out filtering, finally realize reporting to the police, output, memory function according to the application needs.
The DSP chip 400 is connected with the FPGA chip 500 in a bidirectional mode, the input end of the DSP chip 400 is connected with the output end of the RTC chip 600, and the DSP chip 400 is connected with the FRAM FLASH memory chip and the FLASH chip 900 in a bidirectional mode.
The embodiment of the utility model provides an in, doppler very high frequency omnidirectional beacon is at scene monitoring system further still provides IO control and gathers the function, including the I2C interface, carry out the input acquisition and the output control of digital quantity through the input/output unit of I2C bus extension. The maximum number of IOs can reach 256.
Specifically, the signals transmitted through the I2C bus include: alarm and bypass of the monitor, on-off signal of the transmitter, buzzer signal, metal key signal and indicator light signal.
The embodiment of the utility model provides an in, show the accuse unit and can provide external LCD screen and show, adopt LVDS interface communication. Namely, the display and control part of the system mainly completes the display task and displays the related content, the system is provided with a display interface, a liquid crystal screen is expanded to display, and the interface is an LVDS interface.
In the embodiment of the present invention, the FPGA chip 500 is an FPGA chip with model number EP4CE55F23I 7; the DSP chip 400 is a DSP chip of model TMS320C6713BGDPA 200.
Specifically, the FPGA + DSP combined processor adopts an EP4CE55F23I7 industrial wide temperature chip of INTEL company, 1 Flash of SPI serial interface with low power consumption and 50Mhz external connection is used as a system configuration chip, an algorithm program for system operation is stored on the chip after being completely edited, and the program is automatically loaded and operated after the next system power-on; the other chip adopts TMS320C6713BGDPA200 industrial wide temperature chip of TI company, and is externally connected with a 4Mbit and 8-bit Flash to be used as a system configuration chip; and meanwhile, the chip is connected with an FRAM flash memory and used as an external operation memory of the chip.
The FPGA and DSP combined processor is mainly responsible for resolving collected signals, transmitting the signals to corresponding units for display and application, providing various driving programs for external interfaces and rapidly receiving and processing a large amount of data information.
Furthermore, the utility model discloses a doppler very high frequency omnidirectional beacon on-the-spot monitoring system still includes power chip. The control system obtains the working state of each working unit, namely normal or fault information, from each working unit board, can obtain the working state information of each power supply from each power supply output, can collect the voltage of each power supply, can display and inquire the information through maintenance software and a liquid crystal display, and can set parameters for the system through the maintenance software.
The control system realizes data communication with the remote controller through the network light conversion module, realizes state control of the remote control equipment on the local equipment and reading of state information of the local equipment, and can communicate with the remote controller through the wireless module under the condition of not connecting with the optical fiber.
According to the utility model discloses Doppler very high frequency omnidirectional beacon on-site monitoring system, this system area is little, and monitoring antenna only need install in the ground net edge can realize that monitoring function, stability to this field signal are strong, communication rate is high, and communication response is fast, small, interference immunity is strong, reduces multiple advantages such as user maintenance cost.
The utility model has the advantages that: the monitoring system of the utility model is in-situ monitoring, which is about 18 meters away from the center of the antenna, thus greatly reducing the airport land and providing great convenience for the daily maintenance of customers; the former generation monitoring system is far field monitoring, is about 80-200 meters away from the center of the antenna, is very inconvenient for daily maintenance, and simultaneously increases the use cost of more places for customers.
The monitoring system has the advantages of good expandability, accurate monitoring information, high communication speed and good performance, and the serial port communication speed is improved compared with the prior generation. The system provides a good human-computer interface, and remote control of the monitoring system can be realized through the remote controller. The control system of the prior generation does not have a remote controller and can not realize remote control. The system cost is reduced, and the selected raw materials are stable and reliable industrial devices on the market, so that the purchase period and the production period are both shortened, and the cost is reduced by 30 percent compared with the cost of the control system of the prior generation. Due to the optimized upgrade of components, the volume of the system is also reduced, and the installation, debugging and maintenance are more convenient. After the system is successfully researched and developed, the system can be quickly applied to Doppler very high frequency omnidirectional beacon equipment, is more suitable for the environmental requirements, is also applied to complex environments, and can be more suitable for working for a long time under the complex electromagnetic environment than a modern monitoring system.
In a word, the monitoring system has a serial port communication function, an IO control acquisition function and an AD acquisition function. The monitoring system has the advantages of good universality, good expandability, strong stability, high communication rate, fast communication response, small volume and strong anti-interference performance, and can be used for navigation equipment such as Dvor and the like. The monitoring system can also be used in other navigation equipment.
In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the invention, and that those skilled in the art may make variations, modifications, substitutions and alterations herein without departing from the spirit and scope of the invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A doppler vhf omni-directional beacon presence monitoring system, comprising: a radio frequency amplifier unit and a digital signal processing unit, wherein,
the radio frequency amplifier unit includes: the monitoring system comprises a radio frequency amplifier, a numerical control attenuation chip and a 50MHz signal generator, wherein the radio frequency amplifier is accessed with a monitoring signal, the input end of the radio frequency amplifier is connected with the output end of the numerical control attenuation chip, the input end of the numerical control attenuation chip is connected with a digital signal processing unit, the input end of the radio frequency amplifier is connected with the output end of the 50MHz signal generator, and the output end of the 50MHz signal generator is further connected with the digital signal processing unit; the radio frequency amplifier is used for filtering, amplifying and shaping signals received back by the monitoring antenna, and sending the signals to the digital signal processing unit for resolving;
the digital signal processing unit includes: the monitoring device comprises an FPGA chip, a DSP chip, an RTC chip, an RS232 serial port chip, an FRAM FLASH memory chip, a FLASH chip, a DA chip and an AD chip, wherein the FPGA chip is bidirectionally connected with the RS232 serial port chip, and the RS232 serial port chip exchanges data with an external main control unit, a remote control unit and a display control unit, wherein the FPGA chip and the DSP chip preprocess and resolve signals received by a monitoring antenna and send the signals to the main control unit, the remote control unit and the display control unit through the RS232 serial port chip so as to monitor the signals of the device;
the output end of the FPGA chip is connected with the input end of the numerical control attenuation chip, the input end of the FPGA chip is further connected with the output end of a 50MHz signal generator, the output end of the FPGA chip is connected with the input end of the DA chip, and the input end of the FPGA chip is connected with the output end of the AD chip; the AD chip is used for collecting analog data, the combined processor of the FPGA chip and the DSP chip provides system time through the RTC chip, and parameters of the system are stored through the FRAM flash memory chip;
the DSP chip is connected with the FPGA chip in a two-way mode, the input end of the DSP chip is connected with the output end of the RTC chip, and the DSP chip is connected with the FRAM FLASH memory chip and the FLASH chip in a two-way mode.
2. The doppler vhf omni-directional beacon presence monitoring system according to claim 1, further comprising an I2C interface for digital input acquisition and output control through an I2C bus extended input output unit.
3. The doppler very high frequency omnidirectional beacon presence monitoring system according to claim 2, wherein the signals transmitted over the I2C bus comprise: alarm and bypass of the monitor, on-off signal of the transmitter, buzzer signal, metal key signal and indicator light signal.
4. The doppler vhf omni-directional beacon presence monitoring system according to claim 1, wherein the display control unit provides an external lcd for displaying, and uses LVDS interface for communication.
5. The Doppler very high frequency omnidirectional beacon presence monitoring system according to claim 1, wherein the FPGA chip is an FPGA chip of type EP4CE55F23I 7; the DSP chip adopts a model TMS320C6713BGDPA200 DSP chip.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121661037.0U CN217721202U (en) | 2021-07-21 | 2021-07-21 | Doppler very high frequency omnidirectional beacon on-site monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121661037.0U CN217721202U (en) | 2021-07-21 | 2021-07-21 | Doppler very high frequency omnidirectional beacon on-site monitoring system |
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| CN217721202U true CN217721202U (en) | 2022-11-01 |
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| CN202121661037.0U Active CN217721202U (en) | 2021-07-21 | 2021-07-21 | Doppler very high frequency omnidirectional beacon on-site monitoring system |
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