A single-channel camera operation and maintenance diagnosis terminal and system

Abstract

The application relates to the technical field of video monitoring operation and maintenance and Internet of Things communication, in particular to a single-channel camera operation and maintenance diagnosis terminal and system. The terminal comprises a main control unit, a power module, a video network module and a wireless network module; the main control unit is a core control component of the terminal, is electrically connected with the power module, the video network module and the wireless network module respectively, and is used for realizing logical scheduling, data analysis and instruction interaction of the whole terminal; the single-channel camera operation and maintenance diagnosis terminal is one-to-one bound with a single monitoring camera; each terminal has an independent network communication protocol equipment number, and the equipment number and the device ID of the corresponding camera are associated and bound in a platform to complete a remote operation and maintenance platform which is deployed in the cloud or a local server and is used for receiving full-state data uploaded by the terminal, storing the data, visually displaying the data and giving an abnormal alarm. The application can reduce the workload of field operation and maintenance, improve fault recovery efficiency, and guarantee the independence and security of diagnosis data transmission.

Description

Technical Field

[0001] This invention relates to the fields of video surveillance operation and maintenance and Internet of Things communication technology, specifically to a single-channel camera operation and maintenance diagnostic terminal and system. Background Technology

[0002] The current operation and maintenance of video surveillance systems generally suffer from the following pain points: First, a large number of dispersed cameras lack lightweight dedicated monitoring nodes, making it impossible for maintenance personnel to monitor the power supply, network, and operating status of individual devices in real time. Fault detection is delayed, often requiring on-site troubleshooting, which is extremely inefficient. Second, traditional maintenance equipment is mostly centrally deployed, with one device connecting to multiple cameras, making it impossible to provide one-to-one dedicated service. This results in poor fault location accuracy and difficulty in distinguishing independent anomalies of individual devices. Third, the communication modules of existing monitoring equipment mostly use pluggable SIM cards, which are easily removed and stolen, and also occupy additional bandwidth of the cameras, affecting normal video stream transmission. Fourth, most devices lack the ability to trace anomalies on the power supply side, making it impossible to accurately identify camera power outage events and retain the last status message before the power outage, resulting in a lack of key evidence for fault tracing.

[0003] In existing technologies, monitoring solutions based on network communication protocols are mostly geared towards large-scale cluster devices. There is a significant gap in lightweight one-to-one maintenance terminals for single cameras. Furthermore, they cannot simultaneously integrate power supply diagnostics, bidirectional network diagnostics, anti-tampering IoT cards, and automatic reclosing functions, making it difficult to meet the refined maintenance needs of video surveillance scenarios. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies by providing a single-channel camera maintenance and diagnostic terminal and system. It enables a one-to-one maintenance mode where one terminal is dedicated to one camera, completely solving the problems of vague fault location and inability to accurately identify power outage time in traditional centralized maintenance equipment.

[0005] The present invention provides a single-channel camera maintenance and diagnostic terminal, comprising a main control unit, a power supply module, a video network module, and a wireless network module. The main control unit is the core control component of the terminal, and it is electrically connected to the power module, video network module and wireless network module respectively, and is used to realize the logical scheduling, data parsing and command interaction of the entire terminal. The power module is connected to 220V AC power at its input end and to a single camera under monitoring at its output end. It converts the input 220V AC power into 12V DC power to power the camera. The module integrates a voltage sampling circuit, a current sampling circuit, and a controllable reclosing relay. It can collect the voltage and current values ​​on the output side in real time. When a power supply abnormality is detected and the protection is triggered, the reclosing relay can be remotely commanded to restore the power supply. The input port of the video network module supports switchable optical or electrical port access, and the output port is an RJ45 network port connected to the receiving monitoring camera. The module integrates a link status detection unit and a lightweight Ping detection unit, which can autonomously diagnose network link connectivity, packet loss rate and latency. The network status data obtained from the diagnosis is directly uploaded to the main control unit and network status messages are uploaded through the wireless network module. The wireless network module is equipped with an IoT card for transmitting diagnostic status data from the operation and maintenance diagnostic terminal. The module establishes a long connection with the remote operation and maintenance platform based on the network communication protocol to realize the reporting of status data and the reception of platform commands.

[0006] As a further improvement of the present invention, it also includes a peripheral expansion module, which is electrically connected to the main control unit; the peripheral expansion module includes N switch input interfaces and N switch output interfaces, the switch inputs can be connected to external sensors to collect linkage status, and the switch outputs can realize remotely triggered external control actions.

[0007] As a further improvement of the present invention, the controllable reclosing relay is a time-delayed connection relay.

[0008] As a further improvement of the present invention, the main control unit has built-in state judgment logic. When the current sampling circuit detects that the output current is lower than the set threshold and lasts for more than 3 seconds, it immediately determines that the camera is in a power-off state, uploads a message, and the camera is malfunctioning. When the voltage sampling circuit detects that the voltage is 0, with the remaining power of the main control unit's own energy storage element, it uploads the last message marked with "power-off event" to the remote operation and maintenance platform through the wireless network module, thus completing the state retention at the moment of power failure.

[0009] As a further improvement of the present invention, the diagnostic terminal has built-in camera status interaction logic. The terminal sends an ONVIF protocol status query command to the camera through the RJ45 network port on the output side, remotely calls the status code inside the camera, and identifies the operating status of the camera. The status types include four categories: normal operation, video loss, hardware failure, and firmware abnormality.

[0010] As a further improvement of the present invention, the wireless network module uses a separate IoT card, which provides a dedicated independent channel for the terminal's diagnostic data transmission and is completely physically isolated from the camera's video service network.

[0011] The present invention discloses a single-channel camera operation and maintenance diagnosis system, wherein the single-channel camera dedicated operation and maintenance diagnosis terminal is bound one-to-one to a single monitoring camera. Each terminal has an independent network communication protocol device number, which is associated and bound with the corresponding camera's device ID within the platform.

[0012] As a further improvement of the present invention, a remote operation and maintenance platform is included. The remote operation and maintenance platform is deployed in the cloud or on a local server to receive full status data uploaded by the terminal, complete data storage, visualization display and abnormal alarm, and support remotely sending operation commands to the terminal for status query, controllable reclosing relay triggering and switch quantity control.

[0013] The beneficial effects of this invention are: 1. This invention realizes a one-to-one operation and maintenance mode where one terminal is dedicated to one camera, which completely solves the problem of ambiguous fault location in traditional centralized operation and maintenance equipment. All status data of a single camera are collected and uploaded independently, greatly improving the accuracy of operation and maintenance. 2. An independent diagnostic transmission channel is built using an independent IoT card, which does not occupy the video service bandwidth of the camera at all, ensuring the independence and security of diagnostic data transmission; 3. It realizes full-link diagnosis on the power supply side, can accurately identify camera power failure events, and complete the upload of the last message at the moment of power failure, solving the pain point of traditional operation and maintenance solutions that cannot trace the status at the moment of power failure; 4. Integrated automatic reclosing function, which can automatically attempt to restore power supply after the camera power supply is abnormal, greatly reducing the workload of on-site operation and maintenance and improving fault recovery efficiency; 5. The terminal has reserved switch input / output interfaces, which expands the device's linkage capabilities without increasing core costs and can adapt to the operation and maintenance needs of more monitoring scenarios. Attached Figure Description

[0014] Figure 1 This is a flowchart of the present invention. Detailed Implementation Example 1

[0015] The present invention provides a single-channel camera maintenance and diagnostic terminal, comprising a main control unit, a power supply module, a video network module, and a wireless network module. The main control unit is the core control component of the terminal. It uses a 32-bit microcontroller and establishes electrical connections with the power module, video network module, and wireless network module to realize the logic scheduling, data parsing, and command interaction of the entire terminal. The power module uses an AC-DC power module. Its input terminal is connected to 220V AC power, and its output terminal is connected to a single camera being monitored. It converts the input 220V AC power into 12V DC power to power the camera. The module integrates a voltage sampling circuit (NSI1311-DSWVR), a current sampling circuit (CC6900SO-2A, SOP-8), and a controllable reclosing relay. It can collect the voltage and current values ​​on the output side in real time. When a power supply abnormality is detected and the protection is triggered, the reclosing relay can be remotely commanded to restore the power supply. The video network module uses the RTL8367S-CG module, whose input port supports switchable optical or electrical port access, and the output port is an RJ45 network port connected to the receiving monitoring camera. The module integrates a link status detection unit and a lightweight Ping detection unit, which can autonomously diagnose network link connectivity, packet loss rate and latency. The network status data obtained from the diagnosis is directly uploaded to the main control unit, and network status messages are uploaded through the wireless network module. The wireless network module can be an EC801E mobile communication module, which is equipped with an IoT card for transmitting diagnostic status data of the operation and maintenance diagnostic terminal. It does not carry video traffic from the camera. The module establishes a long connection with the remote operation and maintenance platform based on the network communication protocol to realize the reporting of status data and the reception of platform commands. The controllable reclosing relay is a time-delay relay.

[0016] Furthermore, the diagnostic terminal also includes a peripheral expansion module, which is electrically connected to the main control unit. The peripheral expansion module includes N digital input interfaces and N digital output interfaces. The digital inputs can be connected to external sensors to collect linkage status data, and the digital outputs can realize remotely triggered external control actions. For example, the N digital inputs of the peripheral expansion module can be connected to door magnetic sensors or infrared sensors to collect the linkage status of the monitored scene, and the N digital outputs can remotely trigger external devices such as lights and alarms, realizing expanded control in the operation and maintenance scenario. Example 2

[0017] The present invention provides a single-channel camera operation and maintenance diagnosis system, which binds the single-channel camera dedicated operation and maintenance diagnosis terminal of Embodiment 1 to a single monitoring camera one-to-one. Each terminal has an independent network communication protocol device number, and the device ID of the corresponding camera is associated and bound within the platform. It also includes a remote operation and maintenance platform, which is deployed in the cloud or on a local server to receive all status data uploaded by the operation and maintenance terminal, complete the data storage, visualization display and anomaly alarm, and support remotely sending operation instructions to the terminal for status query, reclosing trigger and switch quantity control.

[0018] The voltage sampling circuit in the terminal power module of this system collects the output voltage through a voltage divider resistor, and the current sampling circuit completes current acquisition through a high-precision sampling resistor and an operational amplifier. The collected signals are input to the main control unit, which has built-in state judgment logic to perform logical judgment. When the current sampling circuit detects that the output current is lower than the set threshold and lasts for more than 3 seconds, it immediately determines that the camera is in a power-off state, uploads a message, and the camera is malfunctioning. When the voltage sampling circuit detects that the voltage is 0, with the remaining power of the main control unit's own energy storage element, it uploads the last message marked "power-off event" to the remote operation and maintenance platform through the wireless network module to complete the state retention at the moment of power failure. At the same time, when an overcurrent abnormality is detected, the main control unit triggers a relay to disconnect the power supply, and remotely attempts to close the circuit after 30 seconds to complete the reclosing logic.

[0019] The video network module is equipped with a 100 Mbps Ethernet chip. On the input side, it can be switched between optical SFP access and electrical port access via a DIP switch. On the output side, it is a standard RJ45 network port for connecting to the camera. The main control unit sends a Ping packet to the camera every 2 minutes to count the network packet loss rate and latency, and complete the network status diagnosis.

[0020] The network communication protocol communication module uses an independent carrier IoT channel to connect to the remote operation and maintenance platform, without intersecting with the camera's video service network.

[0021] The operation and maintenance diagnostic terminal supports a dual-mode status reporting mechanism. When the terminal is running normally, in the active reporting mode, the terminal uploads full status data to the remote operation and maintenance platform every 10 minutes. The data includes power supply voltage, power supply current, network link status, camera operating status, and the terminal's own online status. In the passive reporting mode, after receiving the status query command issued by the remote operation and maintenance platform, the operation and maintenance diagnostic terminal immediately returns the current real-time status data without waiting for the scheduled reporting cycle.

[0022] The diagnostic terminal has built-in camera status interaction logic. The terminal sends an ONVIF protocol status query command to the camera through the RJ45 network port on the output side, remotely calls the status code inside the camera, and identifies the camera's operating status. The status types include four categories: normal operation, video loss, hardware failure, and firmware abnormality.

[0023] The wireless network module uses a separate IoT card, providing a dedicated independent channel for terminal diagnostic data transmission, and is completely physically isolated from the camera's video service network.

[0024] This invention can automatically attempt to restore power after a camera power supply failure, significantly reducing the workload of on-site maintenance and improving fault recovery efficiency. It also completes the upload of the last message at the moment of power failure, allowing on-duty personnel to quickly judge and make decisions. Furthermore, it uses an independent IoT card to build an independent diagnostic transmission channel, ensuring the independence and security of diagnostic data transmission.

Claims

1. A single-channel camera maintenance and diagnostic terminal, characterized in that, Includes a main control unit, power supply module, video network module, and wireless network module: The main control unit is the core control component of the terminal, and it is electrically connected to the power module, video network module and wireless network module respectively, and is used to realize the logical scheduling, data parsing and command interaction of the entire terminal. The power module is connected to 220V AC power at its input end and to a single camera under monitoring at its output end. It converts the input 220V AC power into 12V DC power to power the camera. The module integrates a voltage sampling circuit, a current sampling circuit, and a controllable reclosing relay. It can collect the voltage and current values ​​on the output side in real time. When a power supply abnormality is detected and the protection is triggered, the controllable reclosing relay can be remotely commanded to restore power supply. The input port of the video network module supports switchable optical or electrical port access, and the output port is an RJ45 network port connected to the receiving monitoring camera. The module integrates a link status detection unit and a lightweight Ping detection unit, which can autonomously diagnose network link connectivity, packet loss rate and latency. The network status data obtained from the diagnosis is directly uploaded to the main control unit and network status messages are uploaded through the wireless network module. The wireless network module is equipped with an IoT card for transmitting diagnostic status data from the operation and maintenance diagnostic terminal. The module establishes a long connection with the remote operation and maintenance platform based on the network communication protocol to realize the reporting of status data and the reception of platform commands.

2. The single-channel camera maintenance and diagnostic terminal as described in claim 1, characterized in that... It also includes a peripheral expansion module, which is electrically connected to the main control unit; the peripheral expansion module includes N switch input interfaces and N switch output interfaces, the switch inputs can be connected to external sensors to collect linkage status, and the switch outputs can realize remotely triggered external control actions.

3. A single-channel camera maintenance and diagnostic terminal as described in claim 1, characterized in that... The reclosing relay is a time-delayed connection relay.

4. The single-channel camera maintenance and diagnostic terminal as described in claim 1, characterized in that: The main control unit has built-in status judgment logic. When the current sampling circuit detects that the output current is lower than the set threshold and lasts for more than 3 seconds, it immediately determines that the camera is in a power-off state, uploads a message, and the camera is malfunctioning. When the voltage sampling circuit detects that the voltage is 0, with the remaining power of the main control unit's own energy storage element, it uploads the last message marked "power-off event" to the remote operation and maintenance platform through the wireless network module, thus completing the state retention at the moment of power failure.

5. A single-channel camera maintenance and diagnostic terminal as described in claim 1, characterized in that: The diagnostic terminal has built-in camera status interaction logic. The terminal sends an ONVIF protocol status query command to the camera through the RJ45 network port on the output side, remotely calls the status code inside the camera, and identifies the camera's operating status. The status types include four categories: normal operation, video loss, hardware failure, and firmware abnormality.

6. The single-channel camera maintenance and diagnostic terminal as described in claim 1, characterized in that: The wireless network module uses a separate IoT card, providing a dedicated independent channel for terminal diagnostic data transmission, and is completely physically isolated from the camera's video service network.

7. A diagnostic system utilizing a single-channel camera maintenance and diagnostic terminal as described in any one of claims 1-6, characterized in that, The dedicated maintenance and diagnostic terminal for each single-channel camera is bound to a single surveillance camera on a one-to-one basis. Each terminal has an independent network communication protocol device number, which is associated and bound to the corresponding camera's device ID within the platform.

8. A single-channel camera maintenance and diagnostic system as described in claim 8, characterized in that... It includes a remote operation and maintenance platform, which is deployed in the cloud or on a local server. It is used to receive all the status data uploaded by the terminal, complete the data storage, visualization display and anomaly alarm, and support remotely sending operation commands to the terminal for status query, controllable reclosing relay triggering and switch quantity control.

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