169 results about "Ethernet communication" patented technology

This invention provides a method, apparatus, electronic device, and readable storage medium for redundancy control in ring network communication, relating to the field of vehicle-mounted communication. The method includes: controlling nodes in the vehicle-mounted ring network system to detect abnormal Ethernet link states and broadcast these states via CAN communication; a master control node can determine whether to switch redundant links based on the relevant link abnormal states of each node; if switching is required, a switching control message is broadcast via CAN communication; and each node can adjust its port settings based on the switching control message. By implementing Ethernet link detection and redundant link switching control based on Ethernet communication itself, and by integrating the functions of determining whether to switch links based on abnormal link states and broadcasting switching control messages into the master control node, the requirements for nodes other than the master control node are reduced. This lowers the hardware resource requirements of the vehicle-mounted ring network communication redundancy control scheme compared to existing solutions, making it simpler, easier to implement, and more usable.

The invention relates to the technical field of Ethernet communication and digital information transmission, and discloses an Ethernet-based time synchronization acquisition method, device and equipment and a medium, and the method comprises the steps: obtaining initial network time based on a network time protocol and a precise time protocol; recovering the synchronous clock signal from the Ethernet physical layer signal and generating a trigger pulse signal aligned with a second boundary to generate second-level reference time; the trigger pulse signal and the synchronous clock signal are used for executing high-frequency counting accumulation to generate nanosecond-level fine time; performing frequency division processing on the synchronous clock signal based on the sampling rate configuration parameter to obtain a sampling driving clock; the analog-to-digital conversion unit is triggered at the effective jump edge of the sampling driving clock to sample and latch nanosecond-level fine time to generate a sampling timestamp, and the sampling timestamp is output in combination with sampling data. According to the method, time recovery, time refinement and sampling time locking are realized through a unified time base, so that sampling action and time counting are accurately aligned, and the data synchronization precision and consistency of distributed acquisition nodes are improved.

The invention provides an Ethernet communication test method, device, system, equipment and medium, and relates to the technical field of rail transit, the method comprises the following steps: after an Ethernet communication link between display equipment and a train control unit is established, receiving a first input signal of a user on a communication control interface of the display equipment; sending a first input signal to the train control unit through the switch, and receiving response data from the train control unit; the response data is determined by the train control unit according to the communication identifier to be inquired and the first offset parameter; analyzing the response data to obtain an original byte sequence, a bit-level analysis result and a physical meaning, and displaying the original byte sequence, the bit-level analysis result and the physical meaning on a data monitoring interface of the display equipment; performing real-time verification on the response data, marking abnormal data and recording an abnormal occurrence moment; and generating a first test result based on the exception data, the exception occurrence moment and the response data. According to the scheme, the accuracy of network display screen interface troubleshooting and port consistency testing is effectively improved.

The embodiment of the invention provides a method, a device and a computer readable medium for automatically measuring service interruption time of point-to-point or multi-point Ethernet service during path switching. In the method, a first device detects a continuity loss defect (dLOC) based on a CCM set to determine a first timestamp indicating a start of a service interrupt and a second timestamp indicating an end of the service interrupt. The first device then sends the first timestamp and the second timestamp to the second device. The second device determines a service interruption time of the multipoint Ethernet service based on the at least one first timestamp and the at least one second timestamp received from the plurality of first devices. Alternatively, the apparatus detects a continuity loss defect (dLOC) or a remote defect indication defect (dRDI) based on the CCM set, and determines a first timestamp indicating a start of the service interruption, and a second timestamp indicating an end of the service interruption, thereby determining a service interruption time for the multipoint Ethernet service.

The utility model discloses a control system for a wet-method pulverizing production line, which relates to the technical field of mechanical pulverizing equipment and comprises an industrial personal computer and an industrial router connected with the industrial personal computer through Ethernet communication. The jaw crusher control component, the cone crusher control component, the transfer stock bin control component, the double-roller flour mill control component, the vibrating screen control component, the separating tower control component, the magnetic separator control component, the second dewatering screen control component and the first conveying belt control component are connected with the industrial router through Ethernet communication. A first conveying belt control component, a second conveying belt control component, a third conveying belt control component, a fourth conveying belt control component, a first conveying pump control component and a water spraying device control component; the device has the characteristics that the device is convenient to operate and control, one-key start, one-key stop and one-key sudden stop of the whole line can be realized, and the operation data of the whole line can be automatically stored; the device is matched with a wet-method pulverizing production line and is suitable for preparing mineral powder such as quartz sand powder, dolomite powder and calcium carbonate powder.

The invention provides an industrial field instrument communication system, an industrial field instrument and a communication method thereof. The industrial field instrument communication system comprises: a processing unit for processing sensor data and generating a main process variable; the analog output module is connected with the processing unit and used for converting the main process variable into an analog current signal of a first specification and outputting the analog current signal to a two-wire system current loop; the HART modulation-demodulation module is used for superposing a low-frequency FSK digital signal on the analog current signal; the digital communication module is connected with the processing unit and comprises a physical layer adaptation unit, and the physical layer adaptation unit is used for supporting at least two Ethernet physical layer standards with different electrical specifications and rates; wherein the analog current signal and the Ethernet digital communication signal of the digital communication module can be simultaneously and independently transmitted on respective physical media. The industrial field instrument communication system disclosed by the invention can be compatible with Ethernet communication while reserving the existing infrastructure.

The invention discloses an Ethernet communication system based on MicroBlaze and a data transmission method. The system comprises a MicroBlaze processor, an Ethernet UDP (User Datagram Protocol) stack module, a cross-clock domain transmission module, an AXI-Stream FIFO (First In First Out) module and a composite bit width conversion module. The MicroBlaze drives each module through an AXI bus, intervention of a DDR controller and DMA is not needed, deviation between a processor clock and an Ethernet clock is eliminated through asynchronous FIFO, and data integrity and transmission stability are ensured; and the composite bit width conversion module adopts a five-stage pipeline processing architecture and is used for synchronously realizing splitting and merging of 32-bit and 8-bit Ethernet data, zero value filling and data alignment. The invention constructs a DMA / DDR-free architecture with less resource occupation and low transmission delay, realizes stable and reliable Ethernet transmission on an FPGA platform, and is suitable for the field of industrial control with strict real-time requirements.

The application provides a vehicle-mounted Ethernet communication plug-in. The plug-in comprises an MCU unit, a switching chip, a PHY chip, a high-speed signal connector and a power connector. The MCU unit is configured to configure and manage the switching chip. The switching chip is connected with the PHY chip, the high-speed signal connector and the power connector, and is configured to provide at least two gigabit Ethernet interfaces and at least nine first hundred megabit Ethernet interfaces. One of the two gigabit Ethernet interfaces provides DC48V standard POE power supply externally through the power connector, and the other one of the two gigabit Ethernet interfaces is connected with a vehicle-mounted main control unit through the high-speed signal connector. The at least nine first hundred megabit Ethernet interfaces are respectively connected with one service unit through the high-speed signal connector.

The utility model discloses a communication protocol conversion board and a train control system, and the communication protocol conversion board comprises an Ethernet communication interface module which receives coded data transmitted by a train control master control module through an Ethernet interface and uploads track circuit state data to the train control master control module; the CAN communication interface module is used for acquiring CAN data of two CAN buses of the track circuit equipment through two CAN interfaces and sending two pieces of state inquiry data to the track circuit equipment; the main control logic module is used for receiving the coded data, generating two identical state inquiry data according to the coded data, sending the two identical state inquiry data to the CAN communication interface module, converting the received first CAN data and second CAN data into track circuit state data, storing the track circuit state data in a first buffer, and sending the track circuit state data to a second buffer when the coded data is received in the next period; and sending the track circuit state data stored in the first buffer to a train control master control module. According to the invention, network port resources of the train control master control module can be saved, and the real-time performance and the high efficiency of track circuit state data response are improved.

This invention discloses an FPGA-based visible light Ethernet rate-adjustable communication method and system, relating to the field of visible light communication equipment technology. It includes: an off-chip PHY chip, a MAC core, and an FPGA rate conversion and flow control module connected sequentially. The FPGA rate conversion and flow control module is connected to both an FPGA transmit control module and an FPGA receive control module. The FPGA transmit control module and the FPGA receive control module are connected to transceiver circuits, which are then connected to an LED and a photodiode, respectively. This invention addresses the need for visible light-Ethernet communication interface conversion, deeply integrating visible light communication with Ethernet access technology, while simultaneously solving the problem of the traditional single rate of visible light Ethernet, thus broadening the application scenarios of visible light communication.

The application discloses a vehicle-mounted Ethernet centralized data management system and method, relates to the technical field of vehicle-mounted Ethernet communication based on a time-sensitive network, and comprises an ECU identification module, a current parameter analysis module, a historical parameter analysis module and a parameter screening module.The ECU identification module is used for extracting ECU units.The current parameter analysis module is used for obtaining the mention rate and the importance of each basic parameter according to the ECU units, and obtaining a first parameter probability.The historical parameter analysis module is used for extracting the query rate and the modification rate of historical parameters, and obtaining a second parameter probability.The parameter screening module is used for obtaining target basic parameters according to the first parameter probability and the second parameter probability.The shortcut entry module is used for obtaining network entries according to parameter entries, and setting shortcut entries according to the network entries.The entity structure generation module is used for generating a distributed data entity structure.The application has the effect of improving the efficiency and accuracy of parameter query and modification of the vehicle-mounted Ethernet in a test development process.

The application relates to the technical field of computers, in particular to a computer assembly teaching device; the computer assembly teaching device comprises a microcontroller and a power supply control and detection circuit, a base detection circuit, a memory bar detection circuit, a hard disk detection circuit, a fan detection circuit, a PCIEX detection circuit, an Ethernet communication circuit, a USB detection circuit, a front panel output signal control circuit and a detection result output circuit connected with the microcontroller; the computer assembly teaching device is connected with an assembled computer device, the computer assembly teaching device realizes automatic detection of the assembly situation of each main component of a computer mainboard, the process of detecting whether computer assembly is completed by relying on manpower is saved, the computer assembly situation is judged through a final output voltage signal, and the reason for assembly failure is accurately obtained.

The invention discloses a daisy chain type temperature intelligent instrument communication method and system based on an advanced physical layer. A communication method combining the advanced physical layer and a daisy chain topological structure is adopted and applied to a temperature intelligent instrument in the process industry. Collected data and fault data and state data of the intelligent instrument are communicated with the outside through an industrial Ethernet based on an APL, large-scale temperature instrument Ethernet communication in the process industry is realized by adopting a communication medium of the APL, and each instrument in an industrial field is connected with other instruments through an interface of a daisy chain. By adopting the APL instrument, long-distance high-speed communication can be supported, the utilization rate of the acquired data can be improved, the convenience of instrument operation and maintenance can be enhanced, and the defects that the communication content is limited, more meaningful data cannot be transmitted and the use efficiency of the data acquired by the intelligent instrument is reduced due to the fact that the conventional intelligent instrument can only adopt low-speed communication are effectively changed.

The utility model relates to the technical field of fiber bragg grating demodulation, in particular to a multichannel high-speed fiber bragg grating demodulation device, which comprises an optical path module and an electric signal module, the optical path module comprises a tunable laser unit, a PLC (programmable logic controller) unit and a plurality of FBG (fiber bragg grating) sensors, the PLC unit comprises an optical splitter and a plurality of couplers, the electric signal module comprises a main control unit, a photoelectric conversion unit, a DC / DC unit, a 485 communication unit and an Ethernet communication unit, optical signals emitted by the tunable laser unit pass through an optical splitter and a multi-path coupler and then enter an FBG sensor, light is reflected by a grating and then is connected to a photodiode through the coupler, and the photoelectric conversion unit is connected to the Ethernet communication unit. And after photoelectric conversion, AD conversion and peak searching algorithm processing, the optical wavelength is demodulated. According to the utility model, a chip-level data acquisition design is adopted, the scanning speed of the demodulator is improved, fusion with a field system is facilitated through the 485 communication unit, and a heterogeneous system of the master control unit and the FPGA unit is adopted, so that the edge computing capability is enhanced.

The present disclosure relates to a coordinator Ethernet node for an Ethernet communication system, the coordinator Ethernet node comprising: an interface for coupling to a shared medium of the Ethernet communication system, wherein the coordinator Ethernet node is configured to transmit a first beacon via the interface and to trigger a first arbitration period by transmitting the first beacon, and wherein the coordinator Ethernet node is configured to transmit a second beacon via the interface and to trigger a second arbitration period by transmitting the second beacon after the end of the first arbitration period, wherein each arbitration cycle comprises an associated field for a coordinator Ethernet node and each follower Ethernet node of the Ethernet network, referred to as a TO field, representing a transmission opportunity of the respective Ethernet node, and wherein at least one of the arbitration cycles comprises another field for diagnosing the shared medium, referred to as a diagnostic field. The disclosure also relates to a method for a coordinator Ethernet node.

The utility model discloses a high -speed radio frequency frequency hopping sequence reverse analysis device, including ethernet communication interface physical drive module, central processing module, ASIC hardware IO array trigger aggregation processing module, CANFD subnet communication interface physical drive module, ASIC hardware FIFO cluster array cache module and cluster type radio frequency front end scanning module, ethernet communication interface physical drive module is connected with central processing module, and central processing module is connected with ASIC hardware IO array trigger aggregation processing module, CANFD subnet communication interface physical drive module, ASIC hardware FIFO cluster array cache module and cluster type radio frequency front end scanning module respectively, and cluster type radio frequency front end scanning module is connected with ASIC hardware IO array trigger aggregation processing module, CANFD subnet communication interface physical drive module and ASIC hardware FIFO cluster array cache module respectively. The utility model solves the technical problem that the single function of existing communication device and the wireless frequency hopping communication function detection of unable to realize.

The invention is suitable for the technical field of high-speed Ethernet communication, and provides a data unloading and frame reconstruction optimization method and system for a high-speed Ethernet, and the method comprises the steps: packaging to-be-transmitted data into a UDP frame in an FPGA, calculating a checksum, and forming a complete UDP frame; packaging the UDP frame into an IP data packet, then packaging the IP data packet into an Ethernet frame, and controlling splicing of the frames; the packaged Ethernet frame is cached in a Frame FIFO (First In First Out); the format is further converted through a data format conversion module; scrambling the data, and carrying out serial transmission; at a receiving end, descrambling the received data and converting the format; analyzing the Ethernet frame layer by layer through a receiving state machine, and separating IP data or ARP data; the IP data are further analyzed, and UDP data are extracted and transmitted to the data processing module; according to the invention, the Ethernet transmission rate can be greatly improved, and the dependence on hardware is reduced.

The application discloses a vehicle body control network communication signal automatic test method and system, comprising: analyzing a vehicle-mounted CAN network database file, extracting CAN bus, message ID, message name and signal name information, and generating a signal file; based on the signal file and a signal sending configuration file configured for each test signal, constructing a message sending queue through a priority queue and a real-time thread, sending a trigger CAN signal to a first to-be-tested hardware device based on the queue, triggering a second to-be-tested hardware device to run an Ethernet communication protocol executable file to send a trigger Ethernet signal to the first to-be-tested hardware device, receiving and recording response signals and time stamps of the to-be-tested hardware device; and analyzing signal values and communication timing and generating a test report. The application realizes automatic test, accurately coordinates multiple bus signal cooperation, forms a complete test closed loop, improves test efficiency and reliability, and is suitable for communication test of a vehicle body control multiple bus fusion architecture.

The application provides a lithium battery protection plate activation device and method in the technical field of lithium battery formation and capacity grading, which comprises a host computer, an Ethernet communication module, a main control chip and a plurality of optocoupler on-off modules; one end of the Ethernet communication module is connected with the host computer, and the other end is connected with the main control chip; the main control chip is connected with each optocoupler on-off module; the Ethernet communication module comprises an Ethernet chip U30, a resistor R16, a resistor R129, a capacitor C10, a capacitor C165, a capacitor C166, a capacitor C167, a capacitor C173, a capacitor C174 and a crystal oscillator Y4. The application has the advantages that the activation efficiency of the lithium battery protection plate is greatly improved.

The invention relates to the technical field of vehicle lamp detection, and discloses a method for carrying out batch light function test verification on vehicle lamps by using a WIOTa network, and the method comprises the steps: a PC control center module which has the Ethernet communication capability and is used for initiating a test process, issuing a test instruction, receiving and storing test data, carrying out the comparative analysis of the test data, and automatically generating a test report; the WloTa gateway module comprises a WloTa main node and a plurality of WloTa sub-nodes; and the WloTa main node is connected with the PC control center module through the Ethernet, and communicates with the plurality of WloTa sub-nodes through a WloTa wireless protocol. According to the method for carrying out batch light function test verification on the vehicle lamps by using the WIOTa network, a WIOTa wireless network architecture and a hierarchical networking design are adopted, and centralized instruction issuing and data processing of a PC control center are combined, so that batch automatic test of large-scale vehicle lamps is realized, and the defects of low efficiency and poor consistency of traditional manual or semi-automatic test are overcome.

This invention discloses a radar housing with an Ethernet connector and a robotic arm for injection molding therein, belonging to the field of radar housings and robotic arm equipment. The device includes a housing and a composite interface module; the housing has an internal cavity for accommodating radar circuit components; the composite interface module is disposed on the housing and is used for electrical communication with the radar circuit components; wherein, the composite interface module integrates an Ethernet communication interface for data transmission and a low-voltage wiring harness interface for power and signal transmission, and both the Ethernet communication interface and the low-voltage wiring harness interface are electrically connected to the radar circuit components in the internal cavity. This invention achieves a high degree of integration of the radar interface through the integrated design of the composite interface module, which has the advantages of greatly simplifying the housing structure, reducing sealing points, and improving overall sealing reliability and space utilization.

This utility model belongs to the field of communication technology, specifically disclosing a multi-network data acquisition device, which includes a main control module and a data processing module and a communication module electrically connected to the main control module; the main control module is electrically connected to a USB power supply circuit, which drives the main control module to work; the data processing module includes a data acquisition unit and a data storage unit, the data acquisition unit is used to acquire external data and output the external data to the main control module, and the data storage unit is used to store the external data output by the main control module; the communication module is used to transmit external data to a remote data platform, and the communication module includes an Ethernet communication unit and a 4G communication unit; thus, this utility model can adapt to various network environments and can still work normally even when the 4G network is unavailable or has insufficient coverage.

The invention provides a vehicle-mounted Ethernet communication method and a vehicle-mounted module, the method is applied to the vehicle-mounted module, and the method comprises the following steps: a first processor obtains initial data, and adds a data category label for the initial data; sending the initial data to a second processor; the initial data comprises an initial routing rule and / or initial configuration parameters of the vehicle-mounted Ethernet switch; the second processor receives the initial data, generates a first instruction according to the initial data, and sends the first instruction to the third processor; the first instruction comprises a processing instruction field and an instruction parameter field; and the third processor receives the first instruction, executes the instruction processing field in the first instruction, and processes the instruction parameter field. Based on the method, the vehicle-mounted Ethernet switch can be managed and configured in a data issuing mode, and the operation is simple, convenient and flexible.

The invention provides a negotiation method for realizing Ethernet cable state detection, which relates to the technical field of Ethernet communication, and comprises the following steps that: home terminal equipment simultaneously and sequentially sends a plurality of quick connection pulse sequences to opposite terminal equipment on four pairs of Ethernet cables of a twisted pair, when the four pairs of Ethernet cables are judged to be normal according to the monitored quick connection pulse sequences sent by the opposite-end equipment, enabling a muti-giga rate mode and establishing a link with the opposite-end equipment; and when at least two pairs of Ethernet cables are normal, starting the two pairs of cables to realize a 1G rate mode, and selecting the two pairs of normal Ethernet cables to establish a link with opposite-end equipment. The method has the advantages that when it is detected that four pairs of cables are not all normal but at least two pairs of normal cable pairs exist, the strategy of a 1G rate mode is achieved by opening the two pairs of cables, damaged cable pairs are avoided, the normal cable pairs are selected to establish a 1Gbps link, and the bandwidth provided by the normal cable pairs is used to the maximum extent.

The invention provides an automatic testing method and device, a storage medium and electronic equipment, and is applied to the technical field of vehicle Ethernet communication. The method comprises the following steps: constructing a test topology according to a test specification, connecting each controller with test equipment according to the topology, configuring test information, and establishing a test database containing a tested object and equipment configuration information; and running an automatic test project based on the database, obtaining a test case set selected by a user, and automatically matching the corresponding target test environment and equipment according to a case label. And calling each test device in the target environment, testing the tested object according to the configuration information, performing data processing after an execution result is obtained, and generating a test report. Through the flexibly configured test topology and database, unified management and scheduling of various test resources are realized, multi-scene automatic test is supported, and the test process is effectively simplified.

The utility model discloses a railway passenger station lost and found intelligent equipment, lost and found intelligent equipment includes lost deposit cabinet and integrative detection box and main control casing, is provided with main control casing at the top of detection box, the lost deposit cabinet is divided and presents a plurality of small storage box and a plurality of big storage box, is provided with electronic lock respectively on the switch door body of small storage box and big storage box, the left side or the right side of detection box is provided with detection identification and places the mouth, is provided with article identification subassembly in the inside top of detection identification and places the mouth, is provided with main control ware, memory, ethernet communication module and wireless communication module in the inside of main control casing, is provided with touch -control display screen at the front of main control casing, the scanner and voice input module of touch -control display screen upper and lower two sides. The utility model can store and claim operation to lost article fast, and the accuracy and efficiency of lost article search and claim have been improved greatly.

This utility model discloses a communication device with dynamic bandwidth physical isolation for Ethernet, including a main control circuit and a communication circuit. The main control circuit and the communication circuit are connected to realize external network communication. The communication circuit is connected to an isolation circuit, which includes a photoelectric conversion chip M1. Its optical signal input pin is connected to an external fiber optic network to receive optical signals, and its electrical signal output pin is connected to the communication circuit to output electrical signals. This device constructs a physical isolation channel through the photoelectric conversion chip, and uses optical signal transmission to achieve physical layer isolation of Ethernet communication, effectively blocking network attacks and data leakage paths. The dynamic bandwidth characteristic can adaptively adjust bandwidth allocation according to transmission needs, improving network resource utilization. It is suitable for scenarios with high requirements for network security and bandwidth stability, such as finance and government, providing a physical isolation solution for Ethernet communication that combines security and flexibility.

The application discloses a communication conversion device and a communication system, and relates to the technical field of communication signal conversion. The application comprises a conversion substrate, a core substrate, an Ethernet communication module, a CAN bus communication module and a control module. The core substrate is electrically connected with the conversion substrate through a COMe connector. The Ethernet communication module is arranged on the conversion substrate and comprises at least two Ethernet communication interfaces. The CAN bus communication module is arranged on the conversion substrate and comprises at least two CAN bus communication interfaces. The control module is arranged on the core substrate, a first end of the control module is in communication connection with the Ethernet communication module through the COMe connector, and a second end of the control module is electrically connected with the CAN bus communication module through the COMe connector. The number of the Ethernet communication interfaces corresponds to the number of the CAN bus communication interfaces. The control module is configured to isolate the communication channels between the Ethernet communication interfaces in a first communication mode and to conduct the communication channels between the Ethernet communication interfaces in a second communication mode. The application aims to improve the reliability of the device when converting Ethernet communication and CAN communication.

The invention provides a concrete crack detection method and system based on multi-modal sensing and deep learning, and the method comprises the steps: inputting collected multi-source heterogeneous data to a data fusion correction module, and carrying out the processing through time synchronization, space alignment, feature fusion and environment compensation, and obtaining the corrected crack feature information; the crack three-dimensional modeling module constructs and outputs a three-dimensional model of the concrete internal crack and characteristic parameters of the three-dimensional model based on the output corrected crack characteristics; a unified time reference and a space coordinate system are established through a space-time synchronization mechanism of a GPS synchronous clock and Ethernet communication, alignment of SH ultrasonic, optical fiber strain and millimeter wave radar data under the same space-time reference system is achieved, and joint expression of multi-modal features in a unified semantic space is achieved on the basis. And meanwhile, the influence of environmental factors on a detection result is effectively reduced in combination with a dynamic environment compensation mechanism, so that high-precision and stable detection of the internal cracks of the concrete is realized.

The utility model relates to the technical field of mining safety monitoring equipment, in particular to a sealed mining intrinsic safety type camera with image analysis, which comprises a mounting bracket, a camera shell and a camera main body, the mounting bracket is movably connected with the camera shell, the camera shell is movably sleeved with the camera main body, and the camera main body is movably sleeved with the camera shell. The camera shell structurally comprises a shell body, and a bottom plate mounting block is fixedly connected to the middle of the lower surface of the shell body; according to the mining intrinsic safety type anti-fatigue analysis camera, the camera is independently assembled through the camera lens, the light supplementing plate, the PCB mounting bracket, the power supply communication board, the AI algorithm board and the Ethernet communication isolation board, so that a connected structure designed on a camera shell is avoided; furthermore, the convenience of assembly and maintenance between the camera shell and the camera main body is improved, meanwhile, the sealing performance and the heat dissipation performance of a product are considered, and the failure rate in the traditional installation and use process is reduced.