CN113947885A - Remote wireless control method applied to loading and unloading machine - Google Patents
Remote wireless control method applied to loading and unloading machine Download PDFInfo
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- CN113947885A CN113947885A CN202111559402.1A CN202111559402A CN113947885A CN 113947885 A CN113947885 A CN 113947885A CN 202111559402 A CN202111559402 A CN 202111559402A CN 113947885 A CN113947885 A CN 113947885A
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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
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/40—Arrangements in telecontrol or telemetry systems using a wireless architecture
Abstract
The invention discloses a remote wireless control method applied to a loading and unloading machine, and a remote wireless control system comprises the following steps: the remote operation station comprises front-end equipment and a portable console; the front-end equipment comprises an analog camera, video code conversion equipment, a wireless equipment box and an integrated controller, wherein a switch and a first wireless radio frequency module are arranged in the wireless equipment box, wired access of the video code conversion equipment and the integrated controller is provided, a portable console is provided with an integrated display screen, a control host and a second wireless radio frequency module, and system software is installed on the control host. According to the invention, the portable control console and the front-end equipment wirelessly transmit control and image signals to remotely control the reactor core assembly of the material loading and unloading machine, so that the risk of personnel and objects falling is reduced, the loading and unloading safety of the material loading and unloading machine of the nuclear power plant is improved, the occurrence of personnel radiation events is effectively avoided, and the safety of the material loading and unloading machine is improved.
Description
Technical Field
The invention relates to the field of control over a material loading and unloading machine of a nuclear power station, in particular to a remote wireless control method applied to the material loading and unloading machine.
Background
A handler is a key device for completing reactor refueling operations during shutdown and refueling of a nuclear power plant, which handles and transfers fuel assemblies between a reactor core and a fuel transfer device tipper (the plant side of the reactor).
The loading and unloading machine and the transfer device are large key devices of a nuclear island fuel operating system of a pressurized water reactor nuclear power station, through years of digestion, absorption, design, research and development work of our company, a second-generation full-automatic numerical control loading and unloading machine and a transfer device are successfully developed in 2011, are applied to the nuclear power engineering of the square-family mountain and the Hainan, are applied to Hualongyi after design optimization (Fuqing 5, 6 and K2K 3), and the control system adopts a T-CPU platform with the integrated motion control function of Siemens to realize position closed-loop control and achieve the international advanced level. Although the second generation of material handling machines has many improvements compared with the first generation, and the bilateral relay function developed by the transfer device on the hualong first project is more global initiative, for the traditional mode that the equipment operation mode depends on the operator to stand on the equipment for operation, the spherical camera added in the hualong first design improvement can provide the operator with a perfect observation visual angle, and improve the safety and reliability of the equipment during the material changing overhaul, but the irradiation harm to the operator from underwater, a grab device and an online sipping device cannot be avoided all the time. And the material loading and unloading machine and the transfer device are relatively independent and respectively controlled in a reactor plant, and the operation positions of the equipment are dispersed in two places. An interlocking signal is necessary between the loading and unloading machine and the transfer device, and the loading and unloading machine can remotely control the transfer device on the same side to automatically run and stop. During overhaul, before the water pool is not filled with water, the irradiation dose of the loading and unloading machine which is operated by standing on the trolley is higher, and a cliche needs to be laid. Operation on board after filling with water is also adversely affected by radiation and boric acid water spills. Therefore, realize loading and unloading machine and transfer device short distance remote control, possess profound meaning and necessity to improving personnel's safety aspect.
During the period of refueling overhaul, the safety of equipment and personnel is the first, and on the premise of ensuring that the equipment can safely complete the refueling operation, the reduction of the irradiation dose absorbed by an operator is the starting point of the research of the department and the research purpose, and is also the requirement clearly proposed by the owner. At present, the square-family mountain nuclear power unit has successfully completed 6 times of overhaul, the Hainan Changjiang nuclear power unit has completed 4 times of overhaul, and the irradiation dose of a reactor factory pool is much larger than that of a new power station (Hualong I, etc.), so that fuel operation related equipment of an in-service power station needs to replace a traditional operation mode through a remote control mode.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a remote wireless control method applied to a loading and unloading machine, which solves the problems of personnel and reactor core safety when the loading and unloading machine loads and unloads fuel assemblies in the prior art and improves the safety of the loading and unloading machine of a nuclear power station to load and unload the fuel assemblies.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a remote wireless control system for a handler, the remote wireless control system comprising: a remote station comprising a front-end device and a portable console; the front-end equipment comprises an analog camera, video code conversion equipment, a wireless equipment box and an integrated controller, wherein the wireless equipment box is internally provided with a switch and a first wireless radio frequency module and provides wired access for the video code conversion equipment and the integrated controller, the portable console integrates a display screen, a control host and a second wireless radio frequency module, and system software is installed on the control host;
the analog camera collects video signals of the loading and unloading machine and sends the video signals to the video coding conversion equipment, and the video coding conversion equipment codes the video signals and then sends the video signals to the portable control console through the first wireless radio frequency module and the second wireless radio frequency module;
the integrated controller collects signals of all sensors arranged at each position of the material loading and unloading machine, converts the signals into control signals and sends the control signals to the control host through the first wireless radio frequency module and the second wireless radio frequency module;
and the system software displays and controls the state of the material loading and unloading machine through the display screen according to the received various signals.
Further, as for the remote wireless control system applied to the material loading and unloading machine, the second wireless radio frequency module comprises two paths of wireless channels, wherein the first path is 2.4G wifi, and the second path is 5.8G wifi;
the second wireless radio frequency module comprises two paths of wireless channels, wherein the first path is 2.4G wifi, and the second path is 5.8G wifi;
the first wireless channel of the first wireless radio frequency module is connected with the first wireless channel of the second wireless radio frequency module and is responsible for transmitting control signals, and the second wireless channel of the first wireless radio frequency module is connected with the second wireless channel of the second wireless radio frequency module and is responsible for transmitting video signals.
Further, a remote wireless control system for a loader/unloader as described above, the system software comprising a graphical user interface and a controller program;
the graphical user interface runs on the display screen and is used for displaying the state of the material loading and unloading machine according to various received signals and sending a control instruction through the controller program;
the controller program runs on the control host and is used for acquiring, logically processing and operating various signals and then sending the signals to the graphical user interface for display;
the graphical user interface and the controller program are communicated through a TCP/IP protocol, and interaction of data acquisition and control instructions is realized.
Further, the video transcoding device is responsible for accessing at least 5 channels of analog video.
Further, the video transcoding device adopts a DS-7800 series XVR device of Haekwever.
Further, the remote wireless control system applied to the loading and unloading machine is characterized in that the analog camera adopts a DS-2AC40 series camera of Haocongwei vision.
Further, a remote wireless control system applied to a loading and unloading machine as described above, the remote wireless control system further includes:
the wireless network camera is connected with the integrated controller through a serial port and used for testing the high-definition digital access capability of the video code conversion equipment and unifying the system function of a software platform so as to be capable of seamlessly switching to high-definition video monitoring in the future;
and the directional antenna is connected with the integrated controller through a serial port.
Further, the remote wireless control system applied to the material loading and unloading machine is characterized in that the wireless equipment box is of a rack type structure.
Further, the remote wireless control system applied to the material handling machine uses the S7-300 platform to carry the PLC, the I/O module and the T-CPU for motion control, and is connected with the portable console through the short-distance wireless communication module to realize the function of remote control.
A remote wireless control method applied to a loading and unloading machine comprises the following steps:
s100, an analog camera collects video signals of the material loading and unloading machine and sends the video signals to video coding conversion equipment, and the video coding conversion equipment codes the video signals and then sends the video signals to a portable control console through a first wireless radio frequency module and a second wireless radio frequency module;
s200, the integrated controller collects signals of all sensors arranged at each position of the material loading and unloading machine, converts the signals into control signals and sends the control signals to the control host through the first wireless radio frequency module and the second wireless radio frequency module;
and S300, displaying and controlling the state of the material loading and unloading machine through a display screen by system software according to the received various signals.
The invention has the beneficial effects that: according to the invention, the control and image signals are wirelessly transmitted through the portable control console and the front-end equipment, and the reactor core assembly of the material loading and unloading machine is remotely controlled, so that the risk of personnel and objects falling is reduced, the loading and unloading safety of the material loading and unloading machine of the nuclear power plant is improved, the occurrence of personnel radiation events is effectively avoided, and the safety of the material loading and unloading machine is improved.
Drawings
Fig. 1 is a schematic structural diagram of a remote wireless control system applied to a loading and unloading machine according to an embodiment of the present invention;
FIG. 2 is a block diagram of a remote wireless control concept provided in an embodiment of the present invention;
FIG. 3 is a schematic diagram of a remote wireless control system according to an embodiment of the present invention;
fig. 4 is a schematic flowchart of a remote wireless control method applied to a material handling machine according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems solved, the technical solutions adopted, and the technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be further described in detail with reference to the accompanying drawings.
As shown in fig. 1, an embodiment of the present invention provides a remote wireless control system for a material handling machine, including: a remote operation station, which comprises a front-end device 1 and a portable control console 2; the front-end equipment 1 comprises a video analog camera 11, a video code conversion device 12, a wireless equipment box 13 and an integrated controller 14, wherein a switch and a first wireless radio frequency module are arranged in the wireless equipment box 13, wired access of the video code conversion device 12 and the integrated controller 14 is provided, and the wireless equipment box 13 adopts a rack type structure. The portable console 2 is integrated with a display screen 21, a control host 22 and a second radio frequency module 23, and system software is installed on the control host 22. The portable console 2 can be equipped with an independent power supply as needed to meet the temporary manipulation requirements.
In the embodiment of the invention, as shown in fig. 2, an analog camera collects video signals of a loading and unloading machine and sends the video signals to a video coding conversion device, and the video coding conversion device codes the video signals and sends the video signals to a portable control console through a first wireless radio frequency module and a second wireless radio frequency module; the integrated controller collects signals of all sensors arranged at each position of the loading and unloading machine, converts the signals into control signals and sends the control signals to the control host through the first wireless radio frequency module and the second wireless radio frequency module; and the system software displays and controls the state of the material loading and unloading machine through the display screen according to the received various signals.
In the embodiment of the present invention, as shown in fig. 3, the second wireless radio frequency module includes two wireless channels, the first channel is 2.4G wifi, and the second channel is 5.8G wifi; the second wireless radio frequency module comprises two paths of wireless channels, wherein the first path is 2.4G wifi, and the second path is 5.8G wifi; the first wireless channel of the first wireless radio frequency module is connected with the first wireless channel of the second wireless radio frequency module and is responsible for transmitting control signals, and the second wireless channel of the first wireless radio frequency module is connected with the second wireless channel of the second wireless radio frequency module and is responsible for transmitting video signals. The portable control console is wirelessly interconnected with the wireless equipment box at the front end through the wireless radio frequency module, the portable control console is interconnected with the integrated controller through 2.4G wifi all the way, and is responsible for transmitting control signals, and the portable control console is interconnected with the video coding conversion equipment through 5.8G wifi all the way and is responsible for transmitting video signals. The system software is installed on the control host computer, carries out integrated control and display on video signals, mainly provides control and video monitoring functions, and integrates the control and video monitoring on a uniform software platform. The directional antenna is used for a matched wireless equipment box. In order to avoid the fault of a WIFI signal and improve the reliability, a virtual carrier sense mechanism and a TDMA (time division multiple access) technology can be introduced, meanwhile, a pre-reservation mechanism is designed on the basis of a TDMA scheduling mechanism, if the retransmission times in the last scheduling link are not used completely, the rest unused retransmission time is reserved to the next link to be transmitted in advance, the unused retransmission time in the link which is transmitted successfully is reserved to the next link to be scheduled in advance, the transmission time of the next link to be scheduled is increased, the reliability of data transmission is improved, meanwhile, the inter-frame interval of the TDMA network is shortened to improve the priority of the TDMA network, and finally, the purpose of improving the reliability of wireless communication is achieved. Frequency modulation technology can also be adopted to improve the secrecy and the anti-interference performance of WIFI network communication. The functions of the method are mainly to improve fading, communication quality of a mobile platform and the like. The specific measure is that the carrier frequency of the signals transmitted by the two parties of the transceiver is discretely changed according to a preset rule, namely the carrier frequency used in the communication is randomly jumped under the control of a pseudo-random change code.
In the embodiment of the invention, the system software comprises a graphical user interface and a controller program; the graphical user interface runs on the display screen and is used for displaying the state of the material loading and unloading machine according to the received various signals and sending a control instruction through a controller program; the controller program runs on the control host and is used for acquiring, logically processing and operating various signals and then sending the signals to the graphical user interface for display; the graphical user interface and the controller program are communicated through a TCP/IP protocol to realize the interaction of data acquisition and control instructions. In particular, the graphical user interface runs on an industrial tablet computer (portable console) based on an x86 system, and realizes the display and control of the equipment state. The controller program is mainly used for collecting, logically processing and calculating various signals such as encoder signals, load sensor signals and the like of the material loading and unloading machine.
In the embodiment of the invention, the video code conversion equipment is responsible for accessing at least 5 paths of analog videos. Specifically, 2 paths of video ball machines, 2 paths of large and small car cameras and 1 path of underwater camera video signals are digitally encoded through video encoding conversion equipment, wirelessly transmitted to a portable control console through a network, and decoded and displayed through a software platform. The functionality of the video transcoding device should meet at least 5-way analog video access requirements while having the capability to be extended to meet future requirements for extension to digital video. Therefore, the DS-7800 series XVR of Haekang is adopted as a video conversion device, and the DS-7800 series is a new generation four-mixing coaxial high-definition XVR of Haekawei. The product is compatible with multiple coaxial high-definition specifications such as HDTVI, AHD and the like, and can be randomly accessed to HDTVI, AHD, analog and network signals; any number of analog channels can be forbidden and converted into IP channels, and the double functions of DVR and NVR are achieved. And a plurality of IT high and new technologies are adopted, so that independent high-definition monitoring can be realized locally, and a set of powerful safety precaution system can be formed by networking. In the invention, the analog camera is used for testing the video function of the system, and in order to facilitate the test, a high-definition camera is adopted, the resolution ratio is above 700 lines, and the high-definition camera has a pan-tilt function and can be remotely controlled. The DS-2AC40 series camera adopting Haicanwei vision has smaller volume and can be widely applied to places needing large-range high-definition monitoring and having no light and weak light.
In the embodiment of the present invention, the remote wireless control system further includes: and the wireless equipment comprises a wireless network camera and an antenna, is connected with the FPGA through a serial port, and is used for transmitting a control command sent by the GUI interface to the portable console, receiving an input signal from the field equipment, transmitting the input signal to the controller for logic calculation and transmitting a camera signal. Specifically, the wireless network camera is connected with the integrated controller through a serial port and is used for testing the high-definition digital access capability of the video code conversion equipment and unifying the system functions of a software platform so as to be capable of seamlessly switching to high-definition video monitoring in the future; and the directional antenna is connected with the integrated controller through a serial port. The antenna is matched with a wireless equipment box for use, and a directional antenna is adopted for reducing the interference to other unnecessary areas (without wifi coverage) as much as possible and concentrating transmission energy. The front-end equipment is connected with the loading and unloading machine controller through a serial port and used for receiving a control command sent by a human-computer interface of the compiling console and transmitting the control command to the controller for logic calculation. And also for the transmission of camera signals.
In the embodiment of the invention, the wireless receiver at one side of the loading and unloading machine receives and amplifies the transmitted signal, and simultaneously demodulates a level signal and sends the level signal to the integrated controller for processing. The wireless remote control technology can save the cost of cables and wiring and save the use of trays and cable ducts. The portable operating platform comprises a processor with industrial floating point operation, a 4-slot or 8-slot chassis and a hot-pluggable industrial I/O module.
The loading and unloading machine uses the S7-300 platform to carry a PLC, an I/O module and a T-CPU (Technology-CPU) for motion control, and can be connected with a portable operation table through a short-distance wireless communication module to realize the function of remote control. The portable control console is provided with a human-computer interface for remotely controlling the loading and unloading machine and the transfer device, and the interface comprises soft buttons with control functions, state feedback and other information.
According to the invention, through the reliability design of wireless communication, a set of complete control system with wireless transmission of control signals and video acquisition signals is further designed. Compared with the traditional design that the operation is directly carried out by sitting above the trolley of the material loading and unloading machine, the brand new wireless control method avoids the radiation hazard of operators and the risk of falling articles, and improves the safety of the material loading and unloading machine of the nuclear power station.
The invention has the following advantages:
(1) the remote control function and application of the refueling equipment are oriented, a remote operation station is arranged beside a refueling pool to control two refueling equipment, the two equipment are remotely controlled at the same place by means of short-distance wireless or wired communication technology, data are received and displayed, an instruction is sent out at high speed and reliably, and meanwhile, the functions of a closed-circuit television system of a loading and unloading machine are integrated, and high-quality video images are transmitted. The two devices are operated and integrated, so that the efficiency and the comfort can be improved, and the radiation dose of personnel can be reduced. The interference problem of the wireless communication technology in the nuclear island factory building can be fully analyzed.
(2) The remote operation station is used as a separable part of a control console of the loading and unloading machine, and is integrally transported during refueling and overhaul. The control system of the material loading and unloading machine adopts an advanced embedded system based on a processor and an FPGA, the anti-interference capability of signals is analyzed, and the reaction speed of the equipment under various working conditions is analyzed. When the reactor works in a reactor factory building, the remote operation station is controlled by adopting a wireless remote control working mode. The transfer device cancels the original control console, and necessary indicator lamps, digital display meters and buttons are reserved on the control cabinet. And meanwhile, the cost of cables, trays and wiring is saved.
(3) The function of embedding the closed circuit television system in the graphical user interface is realized, and a special display screen of the closed circuit television is cancelled. From the perspective of personnel allocation and workload, the difficulty degree of researching and developing a GUI program of an upper computer and a program source code of a lower computer based on a LabVIEW platform is analyzed, and the method mainly comprises a control strategy, a motion control algorithm, real-time fault diagnosis and the like.
(4) The problem of mutual interference between a wireless communication technology and other communication equipment of a nuclear island factory building is solved.
(5) The integration of the wired communication technology, the communication delay minimization, the local interface and the closed circuit television system is realized.
According to another aspect of the embodiments of the present invention, there is also provided a remote wireless control method applied to a loading and unloading machine, as shown in fig. 4, including:
s100, an analog camera collects video signals of a loading and unloading machine and sends the video signals to video coding conversion equipment, and the video coding conversion equipment codes the video signals and sends the video signals to a portable control console through a first wireless radio frequency module and a second wireless radio frequency module;
s200, the integrated controller collects signals of all sensors arranged at each position of the loading and unloading machine, converts the signals into control signals and sends the control signals to the control host through the first wireless radio frequency module and the second wireless radio frequency module;
and S300, displaying and controlling the state of the material loading and unloading machine through the display screen by the system software according to the received various signals.
It should be noted that the method of the present invention and the aforementioned system belong to the same inventive concept, and detailed descriptions of specific embodiments are omitted.
It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.
Claims (10)
1. A remote wireless control system applied to a material handling machine, characterized in that the remote wireless control system comprises: a remote station comprising a front-end device and a portable console; the front-end equipment comprises an analog camera, video code conversion equipment, a wireless equipment box and an integrated controller, wherein the wireless equipment box is internally provided with a switch and a first wireless radio frequency module and provides wired access for the video code conversion equipment and the integrated controller, the portable console integrates a display screen, a control host and a second wireless radio frequency module, and system software is installed on the control host;
the analog camera collects video signals of the loading and unloading machine and sends the video signals to the video coding conversion equipment, and the video coding conversion equipment codes the video signals and then sends the video signals to the portable control console through the first wireless radio frequency module and the second wireless radio frequency module;
the integrated controller collects signals of all sensors arranged at each position of the material loading and unloading machine, converts the signals into control signals and sends the control signals to the control host through the first wireless radio frequency module and the second wireless radio frequency module;
and the system software displays and controls the state of the material loading and unloading machine through the display screen according to the received various signals.
2. The remote wireless control system applied to the loading and unloading machine of claim 1, wherein the second wireless radio frequency module comprises two wireless channels, the first channel is 2.4G wifi, the second channel is 5.8G wifi;
the second wireless radio frequency module comprises two paths of wireless channels, wherein the first path is 2.4G wifi, and the second path is 5.8G wifi;
the first wireless channel of the first wireless radio frequency module is connected with the first wireless channel of the second wireless radio frequency module and is responsible for transmitting control signals, and the second wireless channel of the first wireless radio frequency module is connected with the second wireless channel of the second wireless radio frequency module and is responsible for transmitting video signals.
3. The remote wireless control system applied to the loading and unloading machine according to claim 1, wherein the system software comprises a graphical user interface and a controller program;
the graphical user interface runs on the display screen and is used for displaying the state of the material loading and unloading machine according to various received signals and sending a control instruction through the controller program;
the controller program runs on the control host and is used for acquiring, logically processing and operating various signals and then sending the signals to the graphical user interface for display;
the graphical user interface and the controller program are communicated through a TCP/IP protocol, and interaction of data acquisition and control instructions is realized.
4. The remote wireless control system applied to the loading and unloading machine of claim 1, wherein the video transcoding device is responsible for accessing at least 5 channels of analog video.
5. The remote wireless control system applied to the loading and unloading machine of claim 4, wherein the video transcoding device adopts a DS-7800 series XVR device of Haekwever.
6. The remote wireless control system applied to the loading and unloading machine as claimed in claim 1, wherein the analog camera is a DS-2AC40 series camera of Haekwever.
7. The remote wireless control system applied to a loading and unloading machine according to claim 1, characterized in that the remote wireless control system further comprises:
the wireless network camera is connected with the integrated controller through a serial port and used for testing the high-definition digital access capability of the video code conversion equipment and unifying the system function of a software platform so as to be capable of seamlessly switching to high-definition video monitoring in the future;
and the directional antenna is connected with the integrated controller through a serial port.
8. The remote wireless control system for the loading and unloading machine according to any one of claims 1-7, wherein the wireless equipment box is of a rack-mounted structure.
9. The remote wireless control system applied to the loading and unloading machine according to any one of claims 1 to 7, wherein the loading and unloading machine uses a platform S7-300 to carry a PLC, an I/O module and a T-CPU for motion control, and is connected with the portable console through a short-distance wireless communication module to realize the function of remote control.
10. A remote wireless control method applied to a loading and unloading machine, which is applied to the remote wireless control system applied to the loading and unloading machine of any one of claims 1-9, characterized in that the remote wireless control method comprises the following steps:
s100, an analog camera collects video signals of the material loading and unloading machine and sends the video signals to video coding conversion equipment, and the video coding conversion equipment codes the video signals and then sends the video signals to a portable control console through a first wireless radio frequency module and a second wireless radio frequency module;
s200, the integrated controller collects signals of all sensors arranged at each position of the material loading and unloading machine, converts the signals into control signals and sends the control signals to the control host through the first wireless radio frequency module and the second wireless radio frequency module;
and S300, displaying and controlling the state of the material loading and unloading machine through a display screen by system software according to the received various signals.
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| US20040135879A1 (en) * | 2003-01-03 | 2004-07-15 | Stacy Marco A. | Portable wireless indoor/outdoor camera |
| CN202679517U (en) * | 2011-12-26 | 2013-01-16 | 武汉珞珈天铭电气科技有限公司 | Outdoor operation safety monitoring system |
| CN206842899U (en) * | 2017-06-05 | 2018-01-05 | 包斌 | A kind of derrick crane console mode operating system |
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