Method and device for preventing secondary startup of industrial personal computer

Abstract

The invention relates to the technical field of industrial control, and particularly discloses a method and device for preventing secondary startup of an industrial personal computer, and the method comprises the steps: enabling a first relay and a second relay to be in a release state before the industrial personal computer is powered on for the first time; the industrial personal computer is powered on for the first time through the first relay in the release state; after the industrial personal computer is started, the second relay is controlled to be closed through a pair of I / O interfaces of the industrial personal computer; the actuation of the first relay is controlled through the actuated second relay, and the power supply to the industrial personal computer is controlled by the actuated second relay; and after the industrial personal computer is turned off, the second relay is released, and the first relay is kept in a pull-in state for preventing the industrial personal computer from being turned on again. According to the invention, only two relays are required to be matched with the industrial personal computer to prevent secondary startup after the industrial personal computer is shut down, and only after the whole industrial control system is shut down, the circuit can be powered on and restarted again, so that the circuit is simple in implementation mode and high in reliability, and the software and hardware overhead for preventing secondary startup of the industrial personal computer is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial control, and in particular to a method and a device for preventing an industrial computer from being turned on a second time. Background Art

[0002] Industrial machines are usually composed of multiple electrical subsystems, and there are sequence requirements for turning the machine on and off, otherwise system errors will occur and a restart will be required.

[0003] In order to prevent industrial machines from being turned on again, the existing technology usually uses electronic circuits or single-chip circuits to implement power supply control functions. This requires complex circuit design and the DC power supply required by the electronic circuit, and may also require software programming. The circuit is complex, the cost is high, and the reliability is poor.

[0004] Therefore, a safe, reliable, simple to control, and low-cost method to prevent the secondary startup of industrial computers is desired.

[0005] Based on this technical background, the present invention proposes a method and device for preventing an industrial computer from being turned on a second time. Summary of the invention

[0006] In view of the shortcomings of the prior art, the present invention proposes a method and device for preventing an industrial computer from being powered on a second time. The method only requires two relays to cooperate with the industrial computer to prevent the industrial computer from being powered on a second time after being powered off. Only after the entire industrial control system is shut down can it be powered on again and restarted. The circuit is simple to implement and has high reliability, saving the software and hardware overhead for preventing the industrial computer from being powered on a second time.

[0007] In order to achieve the above object, the first aspect of the present invention provides a method for preventing an industrial computer from being turned on again, comprising:

[0008] Before the industrial computer is powered on for the first time, both the first relay and the second relay are in the released state;

[0009] Powering on the industrial computer for the first time through the first relay in a released state;

[0010] When the industrial computer is turned on, the second relay is controlled to be attracted through a pair of I / O interfaces of the industrial computer;

[0011] Controlling the first relay to be attracted by the attracted second relay, and controlling the supply of power to the industrial computer by utilizing the attracted second relay;

[0012] When the industrial computer is shut down, the second relay is released and the first relay remains in the energized state, so as to prevent the industrial computer from being turned on again.

[0013] A second aspect of the present invention provides a device for preventing an industrial computer from being turned on again, which is used in the above method, and comprises:

[0014] The industrial computer is provided with a pair of I / O interfaces and a pair of AC input ports;

[0015] The first relay is in a released state before the industrial computer is powered on for the first time, and the industrial computer is powered on for the first time in the released state. When the industrial computer is turned off, the first relay remains in a closed state to prevent the industrial computer from being turned on again;

[0016] The second relay is in a released state before the industrial computer is powered on for the first time, is in an attracted state when the industrial computer is turned on, and controls the first relay to be attracted and to supply power to the industrial computer, and is in a released state when the industrial computer is turned off.

[0017] The technical effects of the present invention include:

[0018] The method for preventing an industrial computer from being powered on again proposed in the present invention only requires two relays to cooperate with the industrial computer to prevent the industrial computer from being powered on again after being powered off. Only after the entire industrial control system is shut down can it be powered on again and restarted. The circuit is simple to implement and has high reliability, saving software and hardware overhead for preventing the industrial computer from being powered on again.

[0019] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present invention.

[0021] Figure 1 The present invention is a flowchart of a method for preventing an industrial computer from being turned on again.

[0022] Figure 2 The present invention provides a circuit structure diagram of a specific implementation of the device for preventing an industrial computer from being turned on a second time.

[0023] Description of reference numerals:

[0024] K1-first relay, K2-second relay, L-live wire, N-neutral wire, L1-live wire power supply end of industrial computer, AC220V-220V alternating current. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein.

[0026] In the present invention, unless otherwise specified, the directional words used, such as "upper and lower", generally refer to the upper and lower parts of the device in normal use, and "inside and outside" refer to the outline of the device. In addition, the terms "first, second, third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first, second, third" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0027] The present invention provides a method for preventing an industrial computer from being turned on again. Figure 1 As shown, including:

[0028] Before the industrial computer is powered on for the first time, the first relay K1 and the second relay K2 are both in the released state;

[0029] The industrial computer is powered on for the first time through the first relay K1 in the released state;

[0030] When the industrial computer is turned on, the second relay K2 is controlled to be closed through a pair of I / O interfaces of the industrial computer;

[0031] The first relay K1 is controlled to be closed by the closed second relay K2, and the closed second relay K2 is used to control the power supply to the industrial computer;

[0032] When the industrial computer is turned off, the second relay K2 is released and the first relay K1 remains in the energized state to prevent the industrial computer from being turned on again.

[0033] In the present invention, only two relays are needed to cooperate with the industrial computer to prevent the industrial computer from being restarted again after being shut down. Only after the entire industrial control system is shut down can it be powered on again and restarted. The circuit implementation method is simple and the reliability is high, which saves the software and hardware expenses for preventing the industrial computer from being restarted twice.

[0034] According to the present invention, it also includes:

[0035] When the industrial control system where the industrial computer is located is shut down, the industrial computer is restored to the state before the initial power-on, and the first relay K1 and the second relay K2 are restored to the released state.

[0036] According to the present invention, the industrial computer is powered by alternating current.

[0037] According to the present invention, the voltage of the alternating current is 220V.

[0038] According to the present invention, the first relay K1 is a single-pole double-throw switch;

[0039] The second relay K2 is a double-pole double-throw switch;

[0040] The single-pole end of the single-pole double-throw switch and the double-pole end of the double-pole double-throw switch are both electrically connected to the live wire L of the alternating current;

[0041] One end of the double-throw terminal of the single-pole double-throw switch is electrically connected to one end of the double-throw terminal of the double-pole double-throw switch, and the other end is electrically connected to the other end of the double-throw terminal of the double-pole double-throw switch.

[0042] Preferably, one control terminal of the single-pole double-throw switch is electrically connected to the neutral line N of the alternating current, and the other control terminal is electrically connected to one of the double-throw terminals of the single-pole double-throw switch;

[0043] One control end of the double-pole double-throw switch is electrically connected to one of the pair of I / O interfaces, and the other control end is electrically connected to the other of the pair of I / O interfaces.

[0044] The present invention also provides a device for preventing the industrial computer from being turned on again in the above method, such as Figure 2 As shown, including:

[0045] The industrial computer is provided with a pair of I / O interfaces and a pair of AC input ports;

[0046] The first relay K1 is in a released state before the industrial computer is powered on for the first time, and the industrial computer is powered on for the first time in the released state. When the industrial computer is turned off, the first relay K1 remains in a closed state to prevent the industrial computer from being turned on again.

[0047] The second relay K2 is in a released state before the industrial computer is powered on for the first time. When the industrial computer is turned on, it is in an attracted state and controls the first relay K1 to be attracted and supply power to the industrial computer. When the industrial computer is turned off, it is in a released state.

[0048] According to the present invention, it also includes:

[0049] The industrial control system has an industrial computer installed therein. When the industrial control system is shut down, the industrial computer is restored to the state before the initial power-on, and the first relay K1 and the second relay K2 are restored to the released state.

[0050] According to the present invention, the industrial computer is powered by an alternating current of 220V;

[0051] The first relay K1 is a single-pole double-throw switch;

[0052] The second relay K2 is a double-pole double-throw switch;

[0053] The single-pole end of the single-pole double-throw switch and the double-pole end of the double-pole double-throw switch are both electrically connected to the live wire L of the alternating current;

[0054] One end of the double-throw terminal of the single-pole double-throw switch is electrically connected to one end of the double-throw terminal of the double-pole double-throw switch, and the other end is electrically connected to the other end of the double-throw terminal of the double-pole double-throw switch.

[0055] According to the present invention, one control terminal of the single-pole double-throw switch is electrically connected to the neutral line N of the alternating current, and the other control terminal is electrically connected to one of the double-throw terminals of the single-pole double-throw switch;

[0056] One control end of the double-pole double-throw switch is electrically connected to one of the pair of I / O interfaces, and the other control end is electrically connected to the other I / O interface of the pair of I / O interfaces;

[0057] One of the double-throw terminals of the single-pole double-throw switch is electrically connected to one of the pair of AC input ports;

[0058] The other of the pair of AC input ports is electrically connected to a neutral line N of alternating current power.

[0059] The present invention will be described in more detail below through specific embodiments.

[0060] Example 1

[0061] This embodiment provides a device to prevent an industrial computer from being turned on again. Figure 2 As shown, including:

[0062] The industrial computer is provided with a pair of I / O interfaces and a pair of AC input ports;

[0063] The first relay K1 is in a released state before the industrial computer is powered on for the first time, and the industrial computer is powered on for the first time in the released state. When the industrial computer is turned off, the first relay K1 remains in a closed state to prevent the industrial computer from being turned on again.

[0064] The second relay K2 is in a released state before the industrial computer is powered on for the first time. When the industrial computer is powered on, it is in a closed state and controls the first relay K1 to close and supply power to the industrial computer. When the industrial computer is powered off, it is in a released state.

[0065] The industrial control system has an industrial computer installed therein. When the industrial control system is turned off, the industrial computer is restored to the state before the initial power-on, and the first relay K1 and the second relay K2 are restored to the released state.

[0066] In this embodiment, the industrial computer is powered by 220V AC power;

[0067] The first relay K1 is a single-pole double-throw switch;

[0068] The second relay K2 is a double-pole double-throw switch;

[0069] The single-pole end of the single-pole double-throw switch and the double-pole end of the double-pole double-throw switch are both electrically connected to the live wire L of the alternating current;

[0070] One end of the double-throw terminal of the single-pole double-throw switch is electrically connected to one end of the double-throw terminal of the double-pole double-throw switch, and the other end is electrically connected to the other end of the double-throw terminal of the double-pole double-throw switch;

[0071] In this embodiment, one control terminal of the single-pole double-throw switch is electrically connected to the neutral line N of the alternating current, and the other control terminal is electrically connected to one of its double-throw terminals;

[0072] One control end of the double-pole double-throw switch is electrically connected to one of the pair of I / O interfaces, and the other control end is electrically connected to the other I / O interface of the pair of I / O interfaces;

[0073] One of the double-throw terminals of the single-pole double-throw switch is electrically connected to one of the pair of AC input ports;

[0074] The other of the pair of AC input ports is electrically connected to a neutral line N of alternating current power.

[0075] like Figure 1 As shown, this embodiment provides a method for preventing an industrial computer from being powered on a second time, which specifically includes the following steps:

[0076] Before the industrial computer is powered on for the first time, the coils of the first relay K1 and the second relay K2 are not powered on and are not attracted; after the industrial computer is powered on, the first relay K1 supplies power to the industrial computer;

[0077] After the industrial computer is turned on, the second relay K2 is energized through a pair of I / O interfaces, and the second relay K2 causes the first relay K1 to be energized; at this time, the industrial computer is powered by the second relay K2;

[0078] When the industrial computer is shut down, the second relay K2 is released, the first relay K1 remains energized, and the industrial computer is without power supply, preventing the industrial computer from being turned on again. Only when the entire industrial control system is shut down and powered on again will it be restored to the initial state and turned on. The opening and closing states of the first relay K1 and the second relay K2 are shown in Table 1, where L1 is the live wire power supply end of the industrial computer.

[0079] Table 1 Opening and closing status of the first relay K1 and the second relay K2

[0080] Action\Result K1 K2 L1 First power on: release release powered by Industrial computer startup: Pull-in Pull-in powered by Industrial control shutdown: Pull-in release Power outage

[0081] The method for preventing an industrial computer from being powered on a second time proposed in an embodiment of the present invention only requires two relays to cooperate with the industrial computer to prevent the industrial computer from being powered on a second time after being powered off. Only after the entire industrial control system is shut down can it be powered on again and restarted. The circuit is simple to implement and has high reliability, saving the software and hardware overhead for preventing the industrial computer from being powered on a second time.

[0082] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A method for preventing an industrial computer from being turned on again, characterized in that: include: Before the industrial computer is powered on for the first time, both the first relay and the second relay are in the released state; Powering on the industrial computer for the first time through the first relay in a released state; When the industrial computer is turned on, the second relay is controlled to be attracted through a pair of I / O interfaces of the industrial computer; Controlling the first relay to be attracted by the attracted second relay, and controlling the supply of power to the industrial computer by using the attracted second relay; When the industrial computer is shut down, the second relay is released and the first relay remains in the energized state, so as to prevent the industrial computer from being turned on again.

2. The method according to claim 1, characterized in that Also includes: When the industrial control system where the industrial computer is located is shut down, the industrial computer is restored to the state before the initial power-on, and the first relay and the second relay are restored to the released state.

3. The method according to claim 1, characterized in that The industrial computer is powered by alternating current.

4. The method according to claim 3, characterized in that The voltage of the alternating current is 220V.

5. The method according to claim 3, characterized in that: The first relay is a single-pole double-throw switch; The second relay is a double-pole double-throw switch; The single-pole end of the single-pole double-throw switch and the double-pole end of the double-pole double-throw switch are both electrically connected to the live wire of the alternating current; One end of the double-throw end of the single-pole double-throw switch is electrically connected to one end of the double-throw end of the double-pole double-throw switch, and the other end is electrically connected to the other end of the double-throw end of the double-pole double-throw switch.

6. The method according to claim 5, characterized in that One control end of the single-pole double-throw switch is electrically connected to the neutral line of the alternating current, and the other control end is electrically connected to one of the double-throw ends of the single-pole double-throw switch; One control end of the double-pole double-throw switch is electrically connected to one of the pair of I / O interfaces, and the other control end is electrically connected to the other of the pair of I / O interfaces.

7. A device for preventing an industrial computer from being turned on again, characterized in that: include: The industrial computer is provided with a pair of I / O interfaces and a pair of AC input ports; The first relay is in a released state before the industrial computer is powered on for the first time, and the industrial computer is powered on for the first time in the released state. When the industrial computer is turned off, the first relay remains in a closed state to prevent the industrial computer from being turned on again; The second relay is in a released state before the industrial computer is powered on for the first time, is in an attracted state when the industrial computer is turned on, and controls the first relay to be attracted and to supply power to the industrial computer, and is in a released state when the industrial computer is turned off.

8. The device according to claim 7, characterized in that Also includes: The industrial control system has the industrial computer arranged therein. When the industrial control system is shut down, the industrial computer is restored to the state before the initial power-on, and the first relay and the second relay are restored to the released state.

9. The device according to claim 8, characterized in that The industrial computer is powered by an alternating current of 220V; The first relay is a single-pole double-throw switch; The second relay is a double-pole double-throw switch; The single-pole end of the single-pole double-throw switch and the double-pole end of the double-pole double-throw switch are both electrically connected to the live wire of the alternating current; One end of the double-throw end of the single-pole double-throw switch is electrically connected to one end of the double-throw end of the double-pole double-throw switch, and the other end is electrically connected to the other end of the double-throw end of the double-pole double-throw switch.

10. The device according to claim 9, characterized in that One control end of the single-pole double-throw switch is electrically connected to the neutral line of the alternating current, and the other control end is electrically connected to one of the double-throw ends of the single-pole double-throw switch; One control end of the double-pole double-throw switch is electrically connected to one of the pair of I / O interfaces, and the other control end is electrically connected to the other of the pair of I / O interfaces; One of the double-throw terminals of the single-pole double-throw switch is electrically connected to one of the pair of AC input ports; The other of the pair of AC input ports is electrically connected to a neutral line of the alternating current.

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