Novel civil air defense and three-proofing control device

Abstract

The utility model discloses a novel civil air defense three-proofing control device, which is characterized in that three state instructions of clean ventilation, poison filtering ventilation and isolated ventilation, which are sent by an upper computer of a civil air defense ventilation mode control box and are received from an RS485 twisted-pair communication bus, are transmitted to an RS485 twisted-pair communication bus through a programmable controller; an action program of a civil air defense tail end control box-lower computer is compiled, and is downloaded to a control loop of each electric actuating mechanism, so as to control the opening and closing of a civil air defense fan, a civil air defense air valve and a civil air defense sewage pump; and meanwhile, operation state parameters of each electric actuating mechanism are fed back to a civil air defense ventilation mode control box-an upper computer, a civil air defense three-proofing control device and a civil air defense tail end control box-a lower computer through an RS485 twisted-pair communication bus, so that the whole control closed loop of the civil air defense control system is completed.

Description

Technical Field

[0001] The utility model relates to a new type of civil air defense three-proof control device, specifically to a civil air defense control system. It transmits control signals through an RS485 twisted pair communication bus, and uses a programmable controller to program the operation logic of civil air defense electric actuators, realizing a device for automatic control of civil air defense ventilation modes. Background Art

[0002] The current civil air defense control system consists of a civil air defense ventilation mode control box - the upper computer, a civil air defense terminal control box - the lower computer, and N electric actuators (such as civil air defense fans, civil air defense dampers, civil air defense sewage pumps) controlled by them. Usually, for a certain instruction sent by the civil air defense ventilation mode control box - the upper computer, it is executed by N electric actuators. Then, to ensure that each instruction is executed without interference, the upper computer needs to pull N groups of communication lines to the corresponding control circuits of the terminal control box - the lower computer. Moreover, the more electric actuators controlled by the terminal control box - the lower computer, the more lines need to be pulled, resulting in a higher cost for wire laying. And the more lines there are in the system, the greater the probability of system failures. Content of the Utility Model

[0003] The technical solution adopted by the utility model is: a new type of civil air defense three-proof control device, including an air switch, a programmable controller, and a digital signal distribution terminal arranged inside the control device. It receives digital signals from the civil air defense ventilation mode control box - the upper computer through a 2×1.5 2 RS485 twisted pair communication bus. The programmable controller therein programs according to the operation logic of civil air defense electric actuators, and the programmed program is transmitted to each control circuit of the civil air defense terminal control box - the lower computer through the RS485 twisted pair communication bus to complete various actions of each electric actuator downstream. Because it is only connected by a 2×1.5 2 RS485 twisted pair communication bus throughout the process, the laying quantity of system signal lines is greatly reduced, and the usage amount of signal lines is only one-tenth, or even one-twentieth of the original. The installation cost is significantly reduced.

[0004] The feature of the utility model also lies in that because each control unit is connected by an RS485 twisted pair communication bus, the laying quantity of signal lines between each control unit is greatly reduced. Due to fewer wirings, the failure probability drops linearly, improving the reliability of the system.

[0005] The feature of the utility model also lies in that the civil air defense three-proof control device adopts a programmable controller, which can customize the control logic programming according to on-site requirements, realizing scientific configuration and flexible connection, so that the action sequence, action time, action amplitude, etc. of each electric actuator meet the on-site control requirements.

[0006] The features of the present utility model further lie in that it includes a civil air defense ventilation mode control box - host computer, an RS485 twisted pair communication bus, a civil air defense three-proof control device, a civil air defense terminal control box - slave computer, a power line, a civil air defense fan, a civil air defense air valve, and a civil air defense sewage pump. Signals are transmitted among them through the RS485 twisted pair communication bus. The power supply for the civil air defense fan, the civil air defense air valve, and the civil air defense sewage pump is supplied by the power line sent out by the civil air defense terminal control box - slave computer. The system operation program is provided by the programmable logic controller in the civil air defense three-proof control device. The signal communication among each control unit follows the modbus protocol.

[0007] The features of the present utility model further lie in that the civil air defense three-proof control device, the civil air defense ventilation mode control box - host computer, the civil air defense terminal control box - slave computer, the civil air defense fan, the civil air defense air valve, and the civil air defense sewage pump communicate with each other, rely on the RS485 twisted pair communication bus to communicate with each other, and follow the modbus protocol.

[0008] The features of the present utility model further lie in that the civil air defense three-proof control device is provided with a programmable logic controller.

[0009] The beneficial effects of the present utility model are as follows: Simplify the control signal transmission path, reduce the number of signal line installations to one-twentieth to one-fiftieth of the previous length, and greatly reduce the project cost. Due to the significant reduction in the number of signal lines installed, the reliability of the civil air defense control system has increased significantly. Description of the Drawings

[0010] Appendix Figure 1 It is a schematic diagram of the implementation structure of a civil air defense three-proof control device of the present utility model.

[0011] Among them: 1. Civil air defense ventilation mode control box - host computer, 2. RS485 twisted pair communication bus,

[0012] 3. Civil air defense three-proof control device, 4. Civil air defense terminal control box - slave computer, 5. Power line,

[0013] 6. Civil air defense fan, 7. Civil air defense air valve, 8. Civil air defense sewage pump Specific Embodiment

[0014] The present utility model will be described in detail below in conjunction with the drawings and specific embodiments.

[0015] The present utility model is improved on the basis of the old civil air defense control system, signal system, and wiring system:

[0016] 1. The RS485 twisted pair communication bus (2) serially connects the civil air defense ventilation mode control box - host computer (1), the civil air defense three-proof control device (3), the civil air defense terminal control box - slave computer (4), the civil air defense fan (6), the civil air defense air valve (7), and the civil air defense sewage pump (8).

[0017] 2. The civil air defense terminal control box - the lower computer (4) sends the power supply to the civil air defense fan (6), civil air defense air valve (7), and civil air defense sewage pump (8) through the power line (5).

[0018] 3. At the same time, the operating parameters and operating status of the civil air defense fan (6), civil air defense air valve (7), and civil air defense sewage pump (8) are also fed back to the civil air defense terminal control box - the lower computer (4), civil air defense triple protection control device (3), and civil air defense ventilation mode control box - the upper computer (1) through the RS485 twisted pair communication bus (2).

[0019] The working process of the utility model is as follows:

[0020] The civil air defense ventilation mode control box - the upper computer (1) issues instructions for clean ventilation, filtered gas ventilation, and isolated ventilation to the civil air defense triple protection control device (3) through the RS485 twisted pair communication bus (2) according to the current actual situation of the control system. The programmable controller in the civil air defense triple protection control device (3) has previously programmed the operating program according to the on-site control requirements and the logical relationship between the control instructions. During the system operation, according to the programmed program, switch instructions are sent to the secondary control circuits of each electric actuator in the civil air defense terminal control box - the lower computer (4). The civil air defense fan (6), civil air defense air valve (7), and civil air defense sewage pump (8) complete the corresponding switch actions according to the superior control instructions, achieving the control objectives pre-designed by the civil air defense control system. At the same time, various operating data of each electric actuator are respectively fed back to the civil air defense terminal control box - the lower computer (4), civil air defense triple protection control device (3), and civil air defense ventilation mode control box - the upper computer (1) through the RS485 twisted pair communication bus (2), completing the closed-loop control process of the civil air defense control system. In the entire civil air defense control system, the civil air defense ventilation mode control box - the upper computer (1), civil air defense triple protection control device (3), civil air defense terminal control box - the lower computer (4), civil air defense fan (6), civil air defense air valve (7), and civil air defense sewage pump (8) communicate with each other following the modbus protocol.

Claims

1. A new type of civil air defense three-defense control device, characterized by Including civil air defense ventilation mode control box - host computer (1), RS485 The twisted pair communication bus (2), the civil air defense three-defense control device (3), the civil air defense terminal control box--the lower computer (4), the power line (5), the civil air defense fan (6), the civil air defense damper (7), the civil air defense sewage pump (8), the signals of each other are transmitted through the RS485 twisted pair communication bus (2), the power supply of the civil air defense fan (6), the civil air defense damper (7), and the civil air defense sewage pump (8) is supplied by the power line (5) issued by the civil air defense terminal control box--the lower computer (4), the system operation program is provided by the programmable controller in the civil air defense three-defense control device (3), and the signal communication between each control unit follows the modbus protocol.

2. A novel civil defense three-defense control device according to claim 1, characterized in that The civil air defense three-defense control device (3), the civil air defense ventilation mode control box - the upper computer (1), the civil air defense terminal control box - the lower computer (4), the civil air defense fan (6), the civil air defense valve (7), and the civil air defense sewage pump (8) communicate with each other, rely on the RS485 twisted pair communication bus (2) to communicate with each other, and follow the modbus protocol.

3. A novel civil defense three-defense control device according to claim 1, characterized in that The civil air defense three-defense control device (3) is provided with a programmable controller.

Images