CN108120962B - Power-on protection method of meteorological radar transmitter - Google Patents
Power-on protection method of meteorological radar transmitter Download PDFInfo
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- CN108120962B CN108120962B CN201711178082.9A CN201711178082A CN108120962B CN 108120962 B CN108120962 B CN 108120962B CN 201711178082 A CN201711178082 A CN 201711178082A CN 108120962 B CN108120962 B CN 108120962B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/28—Details of pulse systems
- G01S7/282—Transmitters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/95—Radar or analogous systems specially adapted for specific applications for meteorological use
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/35—Details of non-pulse systems
- G01S7/352—Receivers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Transmitters (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a power-on protection method of a meteorological radar transmitter, which comprises the steps of establishing connection between an upper computer and signal processing through a network communication module; determining the working state of the meteorological radar and the working time sequence of the transmitter by using the working mode control module; the safe power-on and power-off of the transmitter are completed through the transmitter power-on module and the transmitter power-on protection module. The invention well solves the problem that the transmitter is damaged due to improper power-on operation of the transmitter. The invention plays an important protection role for the transmitter with high price, simultaneously effectively reduces the professional requirements for test operators, and can realize the power-on operation of the complex transmitter only by simple button action. The system has a striking prompting function, even if button misoperation occurs, the instruction sending is stopped in time, and the error reason and the correct operation steps are reminded.
Description
Technical Field
The invention relates to a power-on protection method, in particular to a power-on protection method of a weather radar transmitter.
Background
A certain satellite-borne weather radar adopts a 3mm wave band traveling wave tube transmitter to amplify the power of a low-power radio frequency pulse signal for an antenna to transmit electromagnetic waves. The traveling wave tube transmitter is a high-power microwave irradiation source in a millimeter wave weather radar and has the characteristics of high power, high voltage and large current. Therefore, the safety of the transmitter needs to be fully considered, and circuits, processes, structures and control design, particularly related to the power-on operation of the transmitter, need to be performed in a targeted manner. At present, although the transmitter is designed to be internally protected by high voltage, the operation procedure of powering on the transmitter still puts high demands on the operation procedure, so that operators are trained by high voltage operation regulations and even operated by professional designers.
Disclosure of Invention
The invention aims to provide a power-on protection method of a weather radar transmitter, which solves the problem that in the prior art, although the transmitter is internally subjected to high-voltage protection treatment during design, the power-on operation process of the transmitter still puts high requirements, so that operators are trained by high-voltage operation regulations and even operated by professional designers.
The specific steps of the power-on protection method of the weather radar transmitter are as follows:
first step of building a test control system
A test control system comprising: the device comprises an initialization module, a network communication module, a working mode control module, a transmitter power-on module and a transmitter power-on protection module.
The function of the initialization module is as follows: and resetting the high-speed data acquisition card, initializing an operation interface and self-checking the meteorological radar system.
The network communication module has the functions of: and the full duplex mode realizes the control of data transmission and reception through the Ethernet.
The function of the working mode control module is as follows: and generating a meteorological radar transmitting signal waveform and a time sequence control parameter, and controlling the meteorological radar to work in a preset mode.
The power-up module of the transmitter has the functions of: a predetermined control code required for powering up the transmitter is generated to the signal processor.
The power-on protection module of the transmitter has the functions of: the power-up sequence, power-up time and power-down sequence of the transmitter are tightly controlled.
The second step is that the initialization module completes the resetting of the high-speed data acquisition card, the initialization of the operation interface and the self-checking of the meteorological radar system
The initialization module first places the upper computer in a default state. The initialization module sends a self-checking command to the meteorological radar signal processor through the Ethernet, after the meteorological radar signal processor receives the command, the meteorological radar signal processor sends the self-checking command to the servo mechanism and the internal calibration equipment through the communication interface, meanwhile, the meteorological radar starts internal self-checking, and a self-checking result is displayed on an operation interface of the upper computer.
Thirdly, the network communication module realizes the control of sending and receiving data
The network communication module adopts ethernet to realize the data transmission between meteorological radar signal processor and the host computer, and data include: control commands and scientific data.
The network communication module is provided with an upper computer local IP address, an upper computer local port value and a meteorological radar signal processor port value, the upper computer sends a communication request, and the meteorological radar signal processor receives an instruction to judge a check code and complete control command sending. And when the upper computer is correctly connected with the interface state of the meteorological radar signal processor and the check code is correct, the communication receiving is completed.
The fourth step is that the working mode control module controls the working time sequence and the working mode of the meteorological radar
The transmitting waveform of the weather radar adopts a mode that pulse pressure is compatible with narrow pulse, and the working mode control module controls the weather radar signal processor to forward signal analog output so as to complete the control of the working mode of the weather radar.
The working mode control module controls the meteorological radar signal processor to send the time sequence control signal and the switch level signal to the meteorological radar, and the time sequence control signal and the switch level signal use the pulse repetition frequency as a reference to complete the control of the working time sequence of the meteorological radar.
The fifth step is that the power-on module of the transmitter generates the appointed code of the power-on control of the transmitter
The transmitter power-on control module generates power-on control code comprising: a low voltage power-up code, a high voltage power-up code, a modulated power-up code, a low voltage power-down code, a high voltage power-down code, and a modulated power-down code. The transmitter power-up module sends a power-up control code to the weather radar signal processor.
Sixth step, the power-on protection module of transmitter controls the power-on sequence, power-on time and power-off sequence of transmitter
The transmitter power-on operation interface is provided with a low-voltage power-on button, a high-voltage power-on button, a modulation power-on button, a low-voltage power-off button, a high-voltage power-off button and a modulation power-off button.
When the low voltage power-on button is activated, the weather radar signal processor sends a low voltage power-on code to the transmitter.
When the high-voltage power-on button is started, the weather radar signal processor sends a high-voltage power-on code to the transmitter.
When the modulated power-on button is activated, the weather radar signal processor sends a modulated power-on code to the transmitter.
When the low-voltage power-off button is started, the weather radar signal processor sends a low-voltage power-off code to the transmitter.
When the high-voltage power-off button is started, the weather radar signal processor sends a high-voltage power-off code to the transmitter.
When the modulation power-off button is started, the weather radar signal processor sends a modulation power-off code to the transmitter.
On the initial transmitter power-on operation interface, the low-voltage power-on button is effective, and the high-voltage power-on button, the modulation power-on button, the low-voltage power-off button, the high-voltage power-off button and the modulation power-off button are all ineffective.
And starting a low-voltage power-on button, and after the low-voltage power-on is completed and a preset time passes, starting the high-voltage power-on button and the low-voltage power-off button to be effective and the low-voltage power-on button to be ineffective.
When the low-voltage power-off button is started, the transmitter is powered off at low voltage; when the high voltage power-up button is activated, the low voltage power-down button is deactivated.
When the high voltage power-up is completed, the modulation power-up button and the high voltage power-off button start to be effective, and the high voltage power-up button is not effective.
When the high-voltage power-off button is started, the transmitter is powered off at high voltage; when the modulated power-on button is activated, the high voltage power-off button is deactivated.
When the modulation power-on is completed, the modulation power-off button is active and the modulation power-on button is inactive.
When the modulation power-off button is actuated, the transmitter modulates power-off.
And the upper computer completes power-on protection of the meteorological radar transmitter.
The invention plays an important protection role for the transmitter with high price, simultaneously effectively reduces the professional requirements for test operators, and can realize the power-on operation of the complex transmitter only by simple button action. The system has a striking prompt function, and button misoperation cannot occur. The method comprises the steps that connection between an upper computer and a meteorological radar signal processor is established through a network communication module; determining the working state and working time sequence of the meteorological radar by using a working mode control module; the safe power-on and power-off of the transmitter are completed through the transmitter power-on module and the transmitter power-on protection module. The power-on protection module of the transmitter can ensure that the power-on operation is carried out according to the correct power-on sequence and power-on time strictly. The invention well solves the problem that the transmitter is damaged due to improper power-on operation of the transmitter.
Detailed Description
The specific steps of the power-on protection method of the weather radar transmitter are as follows:
first step of building a test control system
A test control system comprising: the device comprises an initialization module, a network communication module, a working mode control module, a transmitter power-on module and a transmitter power-on protection module.
The function of the initialization module is as follows: and resetting the high-speed data acquisition card, initializing an operation interface and self-checking the meteorological radar system.
The network communication module has the functions of: and the full duplex mode realizes the control of data transmission and reception through the Ethernet.
The function of the working mode control module is as follows: and generating a meteorological radar transmitting signal waveform and a time sequence control parameter, and controlling the meteorological radar to work in a preset mode.
The power-up module of the transmitter has the functions of: a predetermined control code required for powering up the transmitter is generated to the signal processor.
The power-on protection module of the transmitter has the functions of: the power-up sequence, power-up time and power-down sequence of the transmitter are tightly controlled.
The second step is that the initialization module completes the resetting of the high-speed data acquisition card, the initialization of the operation interface and the self-checking of the meteorological radar system
The initialization module first places the upper computer in a default state. The initialization module sends a self-checking command to the meteorological radar signal processor through the Ethernet, after the meteorological radar signal processor receives the command, the meteorological radar signal processor sends the self-checking command to the servo mechanism and the internal calibration equipment through the communication interface, meanwhile, the meteorological radar starts internal self-checking, and a self-checking result is displayed on an operation interface of the upper computer.
Thirdly, the network communication module realizes the control of sending and receiving data
The network communication module adopts 100M Ethernet to realize data transmission between the weather radar signal processor and the upper computer, and the data comprises: control commands and scientific data.
The network communication module is provided with an upper computer local IP address, an upper computer local port value and a meteorological radar signal processor port value, the upper computer sends a communication request, and the meteorological radar signal processor receives an instruction to judge a check code and complete control command sending. And when the upper computer is correctly connected with the interface state of the meteorological radar signal processor and the check code is correct, the communication receiving is completed.
The fourth step is that the working mode control module controls the working time sequence and the working mode of the meteorological radar
The transmitting waveform of the weather radar adopts a mode of pulse pressure compatible with narrow pulse, and the working mode control module controls the weather radar signal processor to forward signals at the rate of 200MHz for analog output, so as to complete the control of the working mode of the weather radar.
The working mode control module controls the meteorological radar signal processor to send the time sequence control signal and the switch level signal to the meteorological radar, and the time sequence control signal and the switch level signal use the pulse repetition frequency as a reference to complete the control of the working time sequence of the meteorological radar.
The fifth step is that the power-on module of the transmitter generates the appointed code of the power-on control of the transmitter
The transmitter power-on control module generates power-on control code comprising: a low voltage power-up code, a high voltage power-up code, a modulated power-up code, a low voltage power-down code, a high voltage power-down code, and a modulated power-down code. The transmitter power-up module sends a power-up control code to the weather radar signal processor.
Sixth step, the power-on protection module of transmitter controls the power-on sequence, power-on time and power-off sequence of transmitter
The transmitter power-on operation interface is provided with a low-voltage power-on button, a high-voltage power-on button, a modulation power-on button, a low-voltage power-off button, a high-voltage power-off button and a modulation power-off button.
When the low voltage power-on button is activated, the weather radar signal processor sends a low voltage power-on code to the transmitter.
When the high-voltage power-on button is started, the weather radar signal processor sends a high-voltage power-on code to the transmitter.
When the modulated power-on button is activated, the weather radar signal processor sends a modulated power-on code to the transmitter.
When the low-voltage power-off button is started, the weather radar signal processor sends a low-voltage power-off code to the transmitter.
When the high-voltage power-off button is started, the weather radar signal processor sends a high-voltage power-off code to the transmitter.
When the modulation power-off button is started, the weather radar signal processor sends a modulation power-off code to the transmitter.
On the initial transmitter power-on operation interface, the low-voltage power-on button is effective, and the high-voltage power-on button, the modulation power-on button, the low-voltage power-off button, the high-voltage power-off button and the modulation power-off button are all ineffective.
And starting a low-voltage power-on button, and after the low-voltage power-on is completed and a preset time passes, starting the high-voltage power-on button and the low-voltage power-off button to be effective and the low-voltage power-on button to be ineffective.
When the low-voltage power-off button is started, the transmitter is powered off at low voltage; when the high voltage power-up button is activated, the low voltage power-down button is deactivated.
When the high voltage power-up is completed, the modulation power-up button and the high voltage power-off button start to be effective, and the high voltage power-up button is not effective.
When the high-voltage power-off button is started, the transmitter is powered off at high voltage; when the modulated power-on button is activated, the high voltage power-off button is deactivated.
When the modulation power-on is completed, the modulation power-off button is active and the modulation power-on button is inactive.
When the modulation power-off button is actuated, the transmitter modulates power-off.
And the upper computer completes power-on protection of the meteorological radar transmitter.
Claims (4)
1. A power-on protection method of a weather radar transmitter is characterized by comprising the following specific steps:
first step of building a test control system
A test control system comprising: the system comprises an initialization module, a network communication module, a working mode control module, a transmitter power-on module and a transmitter power-on protection module;
the function of the initialization module is as follows: the resetting of the high-speed data acquisition card, the initialization of an operation interface and the self-checking of a meteorological radar system are completed;
the network communication module has the functions of: the full duplex mode realizes the control of sending and receiving of data through Ethernet;
the function of the working mode control module is as follows: generating a meteorological radar transmitting signal waveform and a time sequence control parameter, and controlling the meteorological radar to work in a preset mode;
the power-up module of the transmitter has the functions of: generating a predetermined control code required for powering up the transmitter to the signal processor;
the power-on protection module of the transmitter has the functions of: strictly controlling the power-on sequence, power-on time and power-off sequence of the transmitter;
the second step is that the initialization module completes the resetting of the high-speed data acquisition card, the initialization of the operation interface and the self-checking of the meteorological radar system
The initialization module firstly sets the upper computer in a default state; the initialization module sends a self-checking command to the meteorological radar signal processor through the Ethernet, after the meteorological radar signal processor receives the command, the meteorological radar signal processor sends the self-checking command to the servo mechanism and the internal calibration equipment through the communication interface, meanwhile, the meteorological radar starts internal self-checking, and a self-checking result is displayed on an operation interface of an upper computer;
thirdly, the network communication module realizes the control of sending and receiving data
The network communication module adopts ethernet to realize the data transmission between meteorological radar signal processor and the host computer, and data include: control commands and scientific data;
the network communication module sets a local IP address of the upper computer, a local port value of the upper computer and a port value of the meteorological radar signal processor, the upper computer sends a communication request, and the meteorological radar signal processor receives an instruction to judge a check code and complete control command sending; when the upper computer is correctly connected with the interface state of the meteorological radar signal processor and the check code is correct, communication receiving is completed;
the fourth step is that the working mode control module controls the working time sequence and the working mode of the meteorological radar
The transmitting waveform of the weather radar adopts a mode that pulse pressure is compatible with narrow pulse, and the working mode control module controls the weather radar signal processor to forward signals for analog output so as to complete the control of the working mode of the weather radar;
the working mode control module controls the meteorological radar signal processor to send a time sequence control signal and a switch level signal to the meteorological radar, and the time sequence control signal and the switch level signal use pulse repetition frequency as a reference to complete control of the working time sequence of the meteorological radar;
the fifth step is that the power-on module of the transmitter generates the appointed code of the power-on control of the transmitter
The transmitter power-on control module generates power-on control code comprising: a low voltage power-up code, a high voltage power-up code, a modulated power-up code, a low voltage power-down code, a high voltage power-down code, and a modulated power-down code; the transmitter power-up module sends the power-up control code to the weather radar signal processor;
sixth step, the power-on protection module of transmitter controls the power-on sequence, power-on time and power-off sequence of transmitter
The transmitter power-on operation interface is provided with a low-voltage power-on button, a high-voltage power-on button, a modulation power-on button, a low-voltage power-off button, a high-voltage power-off button and a modulation power-off button;
when the low-voltage power-on button is started, the weather radar signal processor sends a low-voltage power-on code to the transmitter;
when the high-voltage power-on button is started, the weather radar signal processor sends a high-voltage power-on code to the transmitter;
when the modulation power-on button is started, the weather radar signal processor sends a modulation power-on code to the transmitter;
when the low-voltage power-off button is started, the meteorological radar signal processor sends a low-voltage power-off code to the transmitter;
when the high-voltage power-off button is started, the meteorological radar signal processor sends a high-voltage power-off code to the transmitter;
when the modulation power-off button is started, the meteorological radar signal processor sends a modulation power-off code to the transmitter;
on an initial transmitter power-on operation interface, a low-voltage power-on button is effective, and a high-voltage power-on button, a modulation power-on button, a low-voltage power-off button, a high-voltage power-off button and a modulation power-off button are all ineffective;
starting a low-voltage power-on button, and after the low-voltage power-on is completed and a preset time passes, enabling a high-voltage power-on button and a low-voltage power-off button to be effective and disabling the low-voltage power-on button;
when the low-voltage power-off button is started, the transmitter is powered off at low voltage; when the high-voltage power-on button is started, the low-voltage power-off button is invalid;
after the high-voltage power-up is completed, the modulation power-up button and the high-voltage power-off button start to be effective, and the high-voltage power-up button is invalid;
when the high-voltage power-off button is started, the transmitter is powered off at high voltage; when the modulation power-on button is started, the high-voltage power-off button is invalid;
after modulation power-on is completed, the modulation power-off button is effective, and the modulation power-on button is ineffective;
when the modulation power-off button is actuated, the transmitter modulates power-off.
2. The power-on protection method for the weather radar transmitter as claimed in claim 1, wherein in the third step, the network communication module uses 100M ethernet to implement data transmission between the weather radar signal processor and the upper computer.
3. The power-on protection method for weather radar transmitter as claimed in claim 1, wherein in the fourth step, the weather radar signal processor forwards the analog output signal at a rate of 200 MHz.
4. A test control system characterized by comprising: the system comprises an initialization module, a network communication module, a working mode control module, a transmitter power-on module and a transmitter power-on protection module;
the function of the initialization module is as follows: the resetting of the high-speed data acquisition card, the initialization of an operation interface and the self-checking of a meteorological radar system are completed;
the network communication module has the functions of: the full duplex mode realizes the control of sending and receiving of data through Ethernet;
the function of the working mode control module is as follows: generating a meteorological radar transmitting signal waveform and a time sequence control parameter, and controlling the meteorological radar to work in a preset mode;
the power-up module of the transmitter has the functions of: generating a predetermined control code required for powering up the transmitter to the signal processor;
the power-on protection module of the transmitter has the functions of: strictly controlling the power-on sequence, power-on time and power-off sequence of the transmitter;
the initialization module completes the resetting of the high-speed data acquisition card, the initialization of an operation interface and the self-checking of the meteorological radar system:
the initialization module firstly sets the upper computer in a default state; the initialization module sends a self-checking command to the meteorological radar signal processor through the Ethernet, after the meteorological radar signal processor receives the command, the meteorological radar signal processor sends the self-checking command to the servo mechanism and the internal calibration equipment through the communication interface, meanwhile, the meteorological radar starts internal self-checking, and a self-checking result is displayed on an operation interface of an upper computer;
the network communication module realizes the control of data sending and receiving:
the network communication module adopts ethernet to realize the data transmission between meteorological radar signal processor and the host computer, and data include: control commands and scientific data;
the network communication module sets a local IP address of the upper computer, a local port value of the upper computer and a port value of the meteorological radar signal processor, the upper computer sends a communication request, and the meteorological radar signal processor receives an instruction to judge a check code and complete control command sending; when the upper computer is correctly connected with the interface state of the meteorological radar signal processor and the check code is correct, communication receiving is completed;
the working mode control module controls the working time sequence and the working mode of the meteorological radar:
the transmitting waveform of the weather radar adopts a mode that pulse pressure is compatible with narrow pulse, and the working mode control module controls the weather radar signal processor to forward signals for analog output so as to complete the control of the working mode of the weather radar;
the working mode control module controls the meteorological radar signal processor to send a time sequence control signal and a switch level signal to the meteorological radar, and the time sequence control signal and the switch level signal use pulse repetition frequency as a reference to complete control of the working time sequence of the meteorological radar;
the transmitter power-up module generates a designated code for power-up control of the transmitter:
the transmitter power-on control module generates power-on control code comprising: a low voltage power-up code, a high voltage power-up code, a modulated power-up code, a low voltage power-down code, a high voltage power-down code, and a modulated power-down code; the transmitter power-up module sends the power-up control code to the weather radar signal processor;
the power-on protection module of the transmitter controls the power-on sequence, power-on time and power-off sequence of the transmitter:
the transmitter power-on operation interface is provided with a low-voltage power-on button, a high-voltage power-on button, a modulation power-on button, a low-voltage power-off button, a high-voltage power-off button and a modulation power-off button;
when the low-voltage power-on button is started, the weather radar signal processor sends a low-voltage power-on code to the transmitter;
when the high-voltage power-on button is started, the weather radar signal processor sends a high-voltage power-on code to the transmitter;
when the modulation power-on button is started, the weather radar signal processor sends a modulation power-on code to the transmitter;
when the low-voltage power-off button is started, the meteorological radar signal processor sends a low-voltage power-off code to the transmitter;
when the high-voltage power-off button is started, the meteorological radar signal processor sends a high-voltage power-off code to the transmitter;
when the modulation power-off button is started, the meteorological radar signal processor sends a modulation power-off code to the transmitter;
on an initial transmitter power-on operation interface, a low-voltage power-on button is effective, and a high-voltage power-on button, a modulation power-on button, a low-voltage power-off button, a high-voltage power-off button and a modulation power-off button are all ineffective;
starting a low-voltage power-on button, and after the low-voltage power-on is completed and a preset time passes, enabling a high-voltage power-on button and a low-voltage power-off button to be effective and disabling the low-voltage power-on button;
when the low-voltage power-off button is started, the transmitter is powered off at low voltage; when the high-voltage power-on button is started, the low-voltage power-off button is invalid;
after the high-voltage power-up is completed, the modulation power-up button and the high-voltage power-off button start to be effective, and the high-voltage power-up button is invalid;
when the high-voltage power-off button is started, the transmitter is powered off at high voltage; when the modulation power-on button is started, the high-voltage power-off button is invalid;
after modulation power-on is completed, the modulation power-off button is effective, and the modulation power-on button is ineffective;
when the modulation power-off button is actuated, the transmitter modulates power-off.
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