Extensible multipath relay control panel

Abstract

The utility model discloses an extensible multipath relay control panel, and relates to the relay control panel technology field, an input board is provided with an input power supply, a signal line and a first connector, and the input power supply and the signal line are electrically connected with the first connector; the relay control unit board comprises a second connector, a dial switch, a data selector chip and an expansion connector, the second connector is connected with the first connector, and the dial switch and the data selector chip are electrically connected with the second connector and the expansion connector; the dial switch is connected with the data selection chip and controls the data selection chip to communicate with specific signals in the signal line. According to the utility model, the multi-path relay control panel is modularized, unitized and standardized; when one relay unit control board is damaged, the control board can be replaced independently, and other relays are not affected. On the premise of selecting the input board, the multi-channel unit control board expansion supported by the input board can be realized. The corresponding relation between the signal and the relay can be set on the unit control board.

Description

Technical Field

[0001] The utility model relates to the technical field of relay control boards, in particular to an expandable multi-channel relay control board. Background Art

[0002] At present, most pin relays are fixed to the circuit board by welding. The life of the relay is limited by the number of times. For a circuit board with multiple relays welded, when one relay is damaged, the other relays can still work normally, but it is not convenient to replace the damaged relay. Usually, the entire circuit board is directly replaced. It is not flexible enough and increases the cost.

[0003] For some industrial control debugging scenarios, the number of relays required sometimes cannot be fully determined, and the number of relays will be added or reduced according to the progress of debugging. The existing multi-channel relay control boards on the market usually have a fixed number of relays. If the number needs to be increased, the relay control board needs to be replaced or additional relay control boards need to be added. For adding control boards, each additional channel requires the corresponding increase of the input power supply, resulting in complex wiring. If there is a large amount of redundancy in the control board selected at the beginning of debugging, although it can meet the expansion requirements, it may cause waste of resources and space.

[0004] For the existing multi-channel relay control boards, usually one input signal can only control one channel of relay and cannot be selected. If the correspondence between the switching signal and the relay is to be switched, only re-wiring can be done and it cannot be switched through configuration.

[0005] Therefore, an expandable multi-channel relay control board has become an urgent problem to be solved by people. Summary of the Utility Model

[0006] The purpose of the utility model is to provide an expandable multi-channel relay control board, which solves the problem of increased cost caused by the need to replace the entire relay control board when some relays of the welded multi-channel relay control board are damaged; solves the problem that the existing relay control board cannot be expanded; solves the problem that the matching relationship between the existing relay input signal and the relay is fixed and cannot be flexibly configured according to needs.

[0007] To solve the above technical problems, the technical solution provided by the utility model is: an expandable multi-channel relay control board, including an input board and a relay control unit board;

[0008] The input board is provided with an input power supply, a signal line and a first connector, and the input power supply and the signal line are both electrically connected to the first connector;

[0009] The relay control unit board includes a second connector, a DIP switch, a data selector chip, and an expansion connector. The second connector is connected to the first connector. The DIP switch and the data selector chip are both electrically connected to the second connector and the expansion connector. The DIP switch is connected to the data selection chip and controls the specific signals in the communication line.

[0010] Further, there are several communication lines, which are electrically connected to the first connector.

[0011] Further, there are several relay control unit boards, and each relay control unit board is connected to the second connector of the next relay control unit board through the expansion connector.

[0012] The advantages of the present utility model compared with the prior art are as follows: The present utility model modularizes, unitizes, and standardizes the multi-channel relay control board. If one relay unit control board is damaged, it can be replaced separately without affecting other channels of relays. It is expandable. On the premise of selecting the input board, the expansion of the multi-channel unit control boards supported by the input board can be realized. The corresponding relationship between the signals and the relays can be set on the unit control board. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of the input board of an expandable multi-channel relay control board of the present utility model.

[0014] Figure 2 is a schematic structural diagram of the relay control unit board of an expandable multi-channel relay control board of the present utility model.

[0015] Figure 3 is a schematic circuit diagram of the input board of an expandable multi-channel relay control board of the present utility model.

[0016] Figure 4 is a schematic circuit diagram of the relay control unit board of an expandable multi-channel relay control board of the present utility model.

[0017] As shown in the figure: 1. Input board, 2. Relay control unit board, 3. Input power supply, 4. Communication line, 5. First connector, 6. Second connector, 7. DIP switch, 8. Data selector chip, 9. Expansion connector. Detailed Embodiment

[0018] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are 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 should not be construed as a limitation to the present utility model.

[0019] In the description of the present utility model, the "first feature" and "second feature" may include one or more of such features. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0020] In the present utility model, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0021] The following further details a kind of expandable multi-channel relay control board of the present utility model with reference to the drawings.

[0022] Combined with the attached Figures 1-4 , the present utility model is introduced in detail.

[0023] An expandable multi-channel relay control board includes an input board 1 and a relay control unit board 2; an input power supply 3, a signal line 4 and a first connector 5 are provided on the input board 1, and the input power supply 3 and the signal line 4 are both electrically connected to the first connector 5; the relay control unit board 2 includes a second connector 6, a DIP switch 7, a data selector chip 8 and an expansion connector 9, the second connector 6 is connected to the first connector 5, and the DIP switch 7 and the data selector chip 8 are both electrically connected to the second connector 6 and the expansion connector 9; the DIP switch 7 is connected to the data selection chip and controls the specific signals in the signal line 4 to be connected.

[0024] Preferably, the signal line 4 has several paths and is electrically connected to the first connector 5.

[0025] Preferably, a plurality of relay control unit boards 2 are provided, and each relay control unit board 2 is connected to the second connector 6 of the next relay control unit board 2 through an expansion connector 9.

[0026] The specific implementation process of a multi-channel relay control board that can be expanded according to the present invention is as follows:

[0027] Combined with the attached Figures 1-4 In the present invention, the input board 1 (A) and multiple relay control unit boards 2 (B) are combined to achieve line expansion. The input board 1 includes an input power supply 3 (input VCC and GND), and 8 signal lines 4 (8 in this example, which can be increased). The relay control unit board 2 can be connected to the input board 1 through the first connector 5 (C). The other side of the relay control unit board 2 can continue to expand the relay control unit board 2 through the expansion connector 9 (C). Up to 8 control unit boards can be expanded in this embodiment.

[0028] The connector (C) plays a role in structural connection on the one hand and line connection on the other hand. That is, the VCC, GND, and each signal line 4 on the input board 1 will be transmitted to each relay control unit board 2. By setting the DIP switch 7 on the relay control unit board 2, the signal corresponding to the current relay is selected.

[0029] A feasible example is achieved through the 74HC151 data selector chip 8. Let the OFF of the DIP switch 7 be 0 and the ON be 1. When the three-bit DIP switch 7 outputs 000 in combination, it acts on the S0 - S2 of the data selector chip 8. At this time, the output IN_Sig of the selector is the first signal IN1. 000 corresponds to the first signal IN1, 001 corresponds to the second signal IN2, 010 corresponds to the third signal IN3... and so on, 111 corresponds to the eighth signal IN8. When expanding multiple relay control unit boards 2, the trigger signal selected by each relay control unit board 2 can be set as needed.

[0030] The above describes the present invention and its implementation manners. Such a description is not restrictive, and what is shown in the drawings is only one of the implementation manners of the present invention. The actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative work without departing from the creative purpose of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. An expandable multi-channel relay control board, characterized in that: It comprises an input board (1) and a relay control unit board (2); The input board (1) is provided with an input power supply (3), a signal line (4) and a first connector (5), and the input power supply (3) and the signal line (4) are both electrically connected to the first connector (5); The relay control unit board (2) comprises a second connector (6), a dip switch (7), a data selector chip (8) and an expansion connector (9); the second connector (6) is connected to the first connector (5); the dip switch (7) and the data selector chip (8) are both electrically connected to the second connector (6) and the expansion connector (9); the dip switch (7) is connected to the data selection chip and controls the specific signal in the communication signal line (4).

2. An expandable multi-channel relay control board according to claim 1, characterized in that: The signal line (4) is provided with a plurality of paths and is electrically connected to the first connector (5).

3. The expandable multi-channel relay control board according to claim 2, characterized in that: There are a plurality of relay control unit boards (2), and each relay control unit board (2) is connected to the second connector (6) of the next relay control unit board (2) via an expansion connector (9).

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