Switch board in explosion-proof and intrinsic safety type explosion-proof cabinet

Abstract

The utility model discloses a switch board in an explosion-proof and intrinsic safety type explosion-proof cabinet, which belongs to the technical field of explosion-proof and intrinsic safety, and comprises a switch main chip, an I2C expansion chip, two or more groups of power switches, two or more groups of optical modules, an I2C interface, a GPIO (General Purpose Input / Output) interface, a VCC interface and a DCDC (Direct Current to Direct Current) power supply conversion unit, the switch main chip is connected with the I2C expansion chip through an I2C interface; the I2C expansion chip is connected with the power switch through the GPIO interface; the power switch is correspondingly connected with the optical module through the VCC interface group; the DCDC power supply conversion unit is connected with the switch main chip, the I2C expansion chip, the power switch and the optical module. According to the utility model, through software, a power supply of an optical port which is not used by a user temporarily is turned off; before use, the power supply of the optical module is turned on through software, so that the stability of the whole equipment is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of explosion-proof and intrinsic safety, and particularly relates to a switchboard in a flameproof and intrinsically safe explosion-proof cabinet. Background Art

[0002] Generally, explosion-proof optical switches are installed in explosion-proof and intrinsically safe explosion-proof cabinets. The optical modules on the optical ports of the switches are also placed in explosion-proof cabinets. The optical modules will generate heat as long as they are powered on, regardless of whether data is transmitted or not. Moreover, the heat generated by the optical modules is particularly large. The explosion-proof cabinet is a closed shell, and it is difficult for the internal heat to dissipate. In addition, the explosion-proof shell is not convenient to open, and it is not allowed to open the explosion-proof shell with power on in hazardous areas. Therefore, unused optical modules will cause the temperature inside the explosion-proof cabinet to rise, affecting the stability of the system and reducing the life of components. Utility Model Content

[0003] In view of the above-mentioned defects of the prior art, the utility model proposes a switch board in a flameproof and intrinsically safe explosion-proof cabinet. The technical solution designed by the utility model includes:

[0004] The switch board includes: a switch main chip, an I2C expansion chip, two or more groups of power switches, two or more groups of optical modules, an I2C interface, a GPIO interface, a VCC interface and a DCDC power conversion unit;

[0005] The switch main chip is connected to the I2C expansion chip via an I2C interface;

[0006] The I2C expansion chip is connected to the power switch via the GPIO interface;

[0007] The power switch is connected to the optical module via the VCC interface group;

[0008] The DCDC power conversion unit is respectively connected to the switch main chip, the I2C expansion chip, the power switch and the optical module.

[0009] Preferably, the switch board further comprises an RS232 interface unit, which is used for the switch main chip to communicate with the industrial computer in the explosion-proof cabinet through the RS232 interface unit.

[0010] Preferably, the switch board further comprises a non-intrinsically safe electrical port unit, and is used for the switch main chip to communicate with an industrial computer in the explosion-proof cabinet through the non-intrinsically safe electrical port unit.

[0011] Preferably, the non-intrinsically safe electrical port unit is also used for the switch main chip to connect to the network device A in the explosion-proof cabinet through the non-intrinsically safe electrical port unit.

[0012] Preferably, the switch board further comprises an intrinsically safe isolated electrical port unit, and is used for connecting the switch board to a network device B outside the explosion-proof cabinet through the intrinsically safe isolated electrical port unit.

[0013] Preferably, the switch board further comprises a multi-way switch optical interface, and is used for the optical module to connect to the network device C outside the explosion-proof cabinet through the multi-way switch optical interface.

[0014] The beneficial effects of the utility model are as follows: the utility model proposes a solution for controlling the power switch of an optical module by software, and the power of an optical port that is not temporarily used by the user can be turned off through software (WEB or hyperterminal); before use, the power of the optical module is turned on through software, thereby improving the stability of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0017] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0018] Reference Figure 1 In the utility model: a switch board in a flameproof and intrinsically safe explosion-proof cabinet, the technical solution of the utility model design includes:

[0019] The switch board includes: a switch main chip, an I2C expansion chip, two or more groups of power switches, two or more groups of optical modules, an I2C interface, a GPIO interface, a VCC interface and a DCDC power conversion unit;

[0020] The switch main chip is connected to the I2C expansion chip through the I2C interface;

[0021] The I2C expansion chip is connected to the power switch through the GPIO interface;

[0022] The power switch is connected to the optical module through the VCC interface group;

[0023] The DCDC power conversion unit is respectively connected to the switch main chip, the I2C expansion chip, the power switch and the optical module.

[0024] Specifically, the DCDC power conversion unit is respectively connected to the switch main chip, the I2C expansion chip, the power switch and the optical module, and is used to supply power to the switch main chip, the I2C expansion chip, the power switch and the optical module respectively.

[0025] Preferably, the switch board further comprises an RS232 interface unit, which is used for the switch main chip to communicate with the industrial computer in the explosion-proof cabinet via the RS232 interface unit.

[0026] Specifically, the switch main chip communicates with the industrial computer in the explosion-proof cabinet through the RS232 interface unit, so that the user can configure the switch data parameters through the serial port on the computer.

[0027] Preferably, the switch board further comprises a non-intrinsically safe electrical port unit, which is used for the switch main chip to communicate with the industrial computer in the explosion-proof cabinet through the non-intrinsically safe electrical port unit.

[0028] Specifically, the main chip of the switch communicates with the industrial computer in the explosion-proof cabinet through the non-intrinsically safe electrical port unit, so that the user can log in to the WEBSERVER software system of the switch through the network on the computer, configure the switch data parameters, and configure the power supply of each group of optical modules to be turned on and off by logging in to the WEBserver software of the switch.

[0029] Preferably, the non-intrinsically safe electrical port unit is also used for the switch main chip to connect to the network device A in the explosion-proof cabinet through the non-intrinsically safe electrical port unit.

[0030] Specifically, the network device A includes but is not limited to an NVR monitoring host and an Ethernet to CAN converter.

[0031] Preferably, the switch board further comprises an intrinsically safe isolated electrical port unit, which is used for connecting the switch board to a network device B outside the explosion-proof cabinet through the intrinsically safe isolated electrical port unit.

[0032] Specifically, network device B includes but is not limited to IPC cameras and IP substations.

[0033] Preferably, the switch board further comprises a multi-channel switch optical interface, which is used for the optical module to connect to the network device C outside the explosion-proof cabinet through the multi-channel switch optical interface.

[0034] Specifically, the network device C includes but is not limited to a ring network switch, and devices and switches in a centralized control center.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A switchboard in a flameproof and intrinsically safe explosion-proof cabinet, characterized in that: The switch board includes: a switch main chip, an I2C expansion chip, two or more groups of power switches, two or more groups of optical modules, an I2C interface, a GPIO interface, a VCC interface and a DCDC power conversion unit; The switch main chip is connected to the I2C expansion chip via an I2C interface; The I2C expansion chip is connected to the power switch via the GPIO interface; The power switch is connected to the optical module via the VCC interface group; The DCDC power conversion unit is respectively connected to the switch main chip, the I2C expansion chip, the power switch and the optical module.

2. The switchboard in the explosion-proof and intrinsically safe explosion-proof cabinet according to claim 1 is characterized in that: The switch board also includes an RS232 interface unit, which is used for the switch main chip to communicate with the industrial computer in the explosion-proof cabinet through the RS232 interface unit.

3. The switchboard in the explosion-proof and intrinsically safe explosion-proof cabinet according to claim 1 is characterized in that: The switch board also includes a non-intrinsically safe electrical port unit, which is used for the switch main chip to communicate with the industrial computer in the explosion-proof cabinet through the non-intrinsically safe electrical port unit.

4. The switchboard in the flameproof and intrinsically safe explosion-proof cabinet according to claim 3 is characterized in that: The non-intrinsically safe electrical port unit is also used for the switch main chip to connect to the network device A in the explosion-proof cabinet through the non-intrinsically safe electrical port unit.

5. The switchboard in the explosion-proof and intrinsically safe explosion-proof cabinet according to claim 1 is characterized in that: The switch board also includes an intrinsically safe isolated electrical port unit, which is used for connecting the switch board to a network device B outside the explosion-proof cabinet through the intrinsically safe isolated electrical port unit.

6. The switchboard in the explosion-proof and intrinsically safe explosion-proof cabinet according to claim 1, characterized in that: The switch board also includes a multi-way switch optical interface, which is used for the optical module to connect to the network device C outside the explosion-proof cabinet through the multi-way switch optical interface.

Images