Centralized power supply system for urban rail transit monitoring equipment

Abstract

The invention relates to a centralized power supply system for urban rail transit monitoring equipment. The centralized power supply system comprises a central processing unit, a control module, a power supply module and a power supply detection module, the central processing unit is connected with the control module and the power supply detection module, the control module is connected with the power supply module, and the power supply module is connected with the power supply detection module; the power supply module comprises a plurality of independent power supply units, and each power supply unit is used for providing power for multiple paths of monitoring equipment; the power supply detection module is used for acquiring an electric signal of a power supply parameter for supplying power to the monitoring equipment by the power supply module and feeding back the electric signal to the central processing unit; the central processing unit is used for controlling the control module according to the electric signal, and the control module controls the working state of the independent power supply unit in the power supply module so as to adjust the power supply parameters of each monitoring device.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply for video surveillance equipment in urban rail transit scenarios, and in particular to a centralized power supply system for urban rail transit surveillance equipment. Background Art

[0002] Urban rail transit is the backbone of the urban public transportation system and an important part of the city's comprehensive transportation system. With the rapid increase in operating mileage and the continuous expansion of the network scale, the pressure on the safe operation of urban rail transit is increasing.

[0003] An important part of the security system of urban rail transit is video surveillance equipment, which is usually composed of cameras and other devices distributed at multiple points. In the application of video surveillance equipment, in order to reduce the difficulty and cost of engineering wiring, a power supply will be used to centrally power the video surveillance equipment at each point. For example, the video surveillance equipment of the monitoring system can be divided into several groups, and multiple video surveillance equipment in each group can be centrally powered by the same power adapter.

[0004] During the study, it was found that the return path of the load working current of any video surveillance device to the power adapter may flow directly from the analog video surveillance device to the power adapter through the power ground, or it may first flow to the video ground of the video receiving device, and then flow from the video receiving device through other video surveillance devices before returning to the power adapter. In other words, current return may randomly flow through the video receiving device in the monitoring system. If any video surveillance device is installed on a common ground, the interference generated on the video ground will generate cross-over power between the video surveillance devices, thereby affecting the service life of the video surveillance equipment.

[0005] Therefore, how to suppress the impact on the service life of the equipment due to the through power of the centrally powered video surveillance equipment has become a technical problem to be solved in the prior art. Summary of the invention

[0006] The present invention provides a centralized power supply system for urban rail transit monitoring equipment, which can suppress the power-through problem of video monitoring equipment in a centralized power supply scenario, thereby extending the service life of the video monitoring equipment in the urban rail transit security system.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] In a first aspect, the present application provides a centralized power supply system for urban rail transit monitoring equipment, comprising: a central processing unit, a control module, a power supply module and a power supply detection module; the central processing unit is connected to the control module and the power supply detection module, the control module is connected to the power supply module, and the power supply module is connected to the power supply detection module;

[0009] The power supply module includes a plurality of independent power supply units, each of which is used to provide power for multiple monitoring devices;

[0010] The power supply detection module is used to obtain an electrical signal of a power supply parameter of the power supply module for supplying power to the monitoring device, and feed the electrical signal back to the central processing unit;

[0011] The central processing unit is used to control the control module according to the electrical signal, and the control module controls the working state of the independent power supply unit in the power supply module, thereby adjusting the power supply parameters of each monitoring device.

[0012] In one implementation, the power supply unit in the power supply module includes a power conversion device for converting the mains power into a power supply format required by the monitoring device.

[0013] In one implementation, the power supply unit and the monitoring devices are in a many-to-many connection relationship, so that when one power supply unit fails, all monitoring devices can still obtain power supply.

[0014] In one implementation, the electrical signal of the power supply parameter includes a voltage and / or current signal.

[0015] In one implementation, the central processing unit is used to compare the voltage and / or current signal with a reference value, and control the control module according to the comparison result.

[0016] In one implementation, the control module is used to control the working state of each independent power supply unit in the power supply module through a switch circuit and / or a circuit selector.

[0017] In one implementation, the power supply detection module is integrated inside the power supply module.

[0018] In one implementation, it also includes: a communication module connected to the central processor, used to transmit the power supply parameters of the power supply module for powering the monitoring device to an external remote end; and / or obtain a remote control signal to control the power supply module.

[0019] In a second aspect, a centralized power supply method for urban rail transit monitoring equipment is provided, which is used in the power supply system described in the first aspect, and the method includes:

[0020] Acquire an electrical signal of a power supply parameter of the power supply module for the monitoring device, and feed the electrical signal back to the central processor;

[0021] The control module is controlled according to the electrical signal, and the control module controls the working state of the independent power supply unit in the power supply module, thereby adjusting the power supply parameters of each monitoring device.

[0022] The technical solution of the present invention obtains the electrical signal of the power supply parameter of the monitoring device provided by the power supply module, and feeds it back to the central processing unit. The central processing unit controls the control module according to the electrical signal, and the control module controls the working state of the independent power supply unit in the power supply module, thereby adjusting the power supply parameters of each monitoring device. It can suppress the power-through problem of the video surveillance device in the centralized power supply scenario, thereby extending the service life of the video surveillance equipment in the urban rail transit security system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a module schematic diagram of a centralized power supply system for urban rail transit video surveillance equipment in an embodiment of the present application;

[0024] In the figure: 1. Communication module, 2. Central processing unit, 3. Power supply detection module, 4. Control module, 5. Power supply module. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0026] In view of the defects and problems of the prior art, a centralized power supply system for urban rail transit monitoring equipment is provided, comprising: a central processing unit, a control module, a power supply module and a power supply detection module; the central processing unit is connected to the control module and the power supply detection module, the control module is connected to the power supply module, and the power supply module is connected to the power supply detection module; wherein the power supply module comprises a plurality of independent power supply units, each of which is used to provide power for multiple monitoring devices; the power supply detection module is used to obtain an electrical signal of a power supply parameter of the power supply module for powering the monitoring device, and feed the electrical signal back to the central processing unit; the central processing unit is used to control the control module according to the electrical signal, and the control module controls the working state of the independent power supply unit in the power supply module, thereby adjusting the power supply parameters of each monitoring device.

[0027] In the embodiment of the present application, the power supply unit in the power supply module includes a power conversion device for converting the mains power into the power supply format required by the monitoring device. The power supply unit and the monitoring device are connected in a many-to-many relationship, so that if one power supply unit fails, all monitoring devices can still obtain power.

[0028] In one embodiment of the present application, the power supply parameter is specifically a voltage signal. The power supply detection module is used to obtain the power supply voltage of the power supply module for powering the monitoring device. The central processing unit compares the voltage signal with the reference value voltage and controls the control module according to the comparison result. The control module is used to control the working state of each independent power supply unit in the power supply module through a switch circuit or a circuit selector.

[0029] exist Figure 1 In a more detailed embodiment, the structure and working principle of the above centralized power supply system are explained.

[0030] like Figure 1 As shown, a centralized power supply system for urban rail transit monitoring equipment is provided, including a power supply module 5 for providing power to video monitoring equipment in different areas of the urban rail transit field; a power supply detection module 3 arranged in and connected to the power supply module 5 for detecting the power supply status of the power supply module 5; a central processing unit 2 and a control module 4, the control module 4 is connected to the central processing unit 2 and the power supply module 5, and the central processing unit 2 can control the working status of the power supply module 5 through the control module 4 through the feedback of the power supply detection module 3; a communication module 1, arranged in and connected to the central processing unit 2, can communicate over long distances to realize remote control of the power supply module. Safe and stable power supply to video monitoring equipment is realized.

[0031] The working principle of the embodiment of the present application is as follows:

[0032] The power supply module includes multiple independent power supply units. One power supply unit can support the power supply requirements of multiple video surveillance devices. The damage of a power supply unit will not affect the use of the entire device.

[0033] The central processor 5, as the core module of the centralized power supply system of the urban rail transit video monitoring equipment, can be configured as an FPGA module or a single-chip microcomputer module or a customized DSP chip module with a built-in setting program.

[0034] The power supply detection module 3 is used to detect the voltage and current values ​​of the power supply of the video surveillance device and output voltage and current detection signals to the central processor 5. The central processor 5 receives the detection signal and compares it with the reference voltage to grasp the power supply status of the video surveillance device in real time.

[0035] The central processor 5 receives the real-time data from the power supply detection module and analyzes and processes the current and voltage values ​​of the power supply cables. When the voltage and current values ​​of the camera are in normal working state, the monitoring state is maintained continuously; when the voltage and current values ​​of the camera are in abnormal working state, the communication module sends out an alarm signal, controls the power supply of the camera to be disconnected, and adjusts the power supply unit of the camera to realize the operation of the equipment in a safe and stable working environment.

[0036] The communication module 1 can receive the real-time data analyzed by the central processor and send it to the remote device. At the same time, it can accept the control instructions sent from the remote end to remotely control the power supply module.

[0037] In the several embodiments provided by the present invention, it should be understood that the disclosed method can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the above units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0038] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (Processor) to perform some steps of the above-mentioned method of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0039] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A centralized power supply system for urban rail transit monitoring equipment, characterized in that: include: A central processing unit, a control module, a power supply module and a power supply detection module; the central processing unit is connected to the control module and the power supply detection module, the control module is connected to the power supply module, and the power supply module is connected to the power supply detection module; The power supply module includes a plurality of independent power supply units, each of which is used to provide power for multiple monitoring devices; The power supply detection module is used to obtain an electrical signal of a power supply parameter of the power supply module for supplying power to the monitoring device, and feed the electrical signal back to the central processing unit; The central processing unit is used to control the control module according to the electrical signal, and the control module controls the working state of the independent power supply unit in the power supply module, thereby adjusting the power supply parameters of each monitoring device.

2. The centralized power supply system for urban rail transit monitoring equipment according to claim 1 is characterized in that: The power supply unit in the power supply module includes a power conversion device for converting the mains power into the power supply format required by the monitoring device.

3. The centralized power supply system for urban rail transit monitoring equipment according to claim 2 is characterized in that: The power supply units and the monitoring devices are in a many-to-many connection relationship, so that when one power supply unit fails, all monitoring devices can still obtain power supply.

4. The centralized power supply system for urban rail transit monitoring equipment according to claim 1 is characterized in that: The electrical signal of the power supply parameter includes a voltage and / or current signal.

5. The centralized power supply system for urban rail transit monitoring equipment according to claim 3 is characterized in that: The central processing unit is used to compare the voltage and / or current signal with a reference value and control the control module according to the comparison result.

6. The centralized power supply system for urban rail transit monitoring equipment according to claim 5 is characterized in that: The control module is used to control the working state of each independent power supply unit in the power supply module through a switch circuit and / or a circuit selector.

7. The centralized power supply system for urban rail transit monitoring equipment according to claim 1 is characterized in that: The power supply detection module is integrated inside the power supply module.

8. The centralized power supply system for urban rail transit monitoring equipment according to claim 1 is characterized in that: Also includes: The communication module connected to the central processing unit is used to transmit the power supply parameters used by the power supply module to supply power to the monitoring device to an external remote end; and / or obtain a remote control signal to control the power supply module.

9. A centralized power supply method for urban rail transit monitoring equipment, characterized in that: For the power supply system according to claim 1, the method comprises: Obtain the electrical signal of the power supply parameter of the power supply module for the monitoring device, and feed the electrical signal back to the central processing unit; The control module is controlled according to the electrical signal, and the control module controls the working state of the independent power supply unit in the power supply module, thereby adjusting the power supply parameters of each monitoring device.

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