Cascade control circuit and LED controller with same

Abstract

The utility model discloses a cascade control circuit which comprises an MOS tube, a relay, an input port and an output port, the output port is grounded, the input port is electrically connected with the relay, and the MOS tube is used as a switch to control the on-off of the relay. Starting and closing of the cascade control circuit can be controlled through the driving module and the communication module, so that on-off of the controller is achieved, and the application range is wide.

Description

Technical Field

[0001] The utility model belongs to the field of LED display screen control, and in particular relates to a cascade control circuit and an LED controller with the circuit. Background Art

[0002] LED display is one of the display devices, usually composed of multiple light-emitting diodes, which display characters, text, graphics, etc. by turning on and off the lights. Unlike other display devices, which are generally directly connected to control devices and input devices to receive input and display output, LED display is often used for outdoor large-screen display, usually through background control.

[0003] The existing controller has the following problems:

[0004] 1. The control mode of the existing controller is relatively single and cannot meet the needs of different users.

[0005] 2. With the popularity of ultra-large screens, multiple screens are usually spliced ​​together to form an ultra-large screen, but it is difficult to control multiple screens in a unified manner.

[0006] 3. The controllers are of different sizes, making installation inconvenient. Utility Model Content

[0007] The utility model solves the above problems by improving the circuit and the shell.

[0008] In order to solve the above problems existing in the prior art, the technical solution adopted by the utility model is:

[0009] A cascade control circuit comprises a MOS tube, a relay, an input port and an output port, wherein the output port is grounded, the input port is electrically connected to the relay, and the MOS tube is used as a switch to control the on and off of the relay.

[0010] An LED controller comprises a cascade control circuit, a control module, a switching unit and a power supply module;

[0011] The cascade control circuit, the power module and the on-off unit are electrically connected to the control module respectively;

[0012] The on-off unit is used to control the operation of the cascade control circuit;

[0013] The power supply module is used to supply power to the control module, the on-off unit and the cascade control circuit.

[0014] The utility model can control the start and close of the cascade control circuit through the driving module and the communication module, thereby realizing the switch of the controller, and has a wide application range.

[0015] The utility model can realize cascade control of multiple LED controllers through the network cable port. According to different network cable connection methods, it can be series cascade control or parallel cascade control.

[0016] Furthermore, the on-off unit includes a communication module, the communication module uses an SP3485EN chip, and the communication module is communicatively connected to a host computer.

[0017] Furthermore, the on-off unit includes a driving module, the driving module adopts an md7620 chip, and the driving module is used to control the operation of the relay in the cascade control circuit.

[0018] Furthermore, the cascade control circuit includes a MOS tube, a relay and two network cable interfaces, and the MOS tube serves as a switch to control the on and off of the relay.

[0019] Furthermore, it also includes a key module and a digital display tube, both of which are electrically connected to the control module. The key module is used to control the cascade control circuit, and the digital display tube is used to display the working status of the controller.

[0020] Furthermore, it also includes a shell, which is made of metal, the controller is grounded through the shell, and the shell is designed according to the size of the screen power supply. Since the shell adopts a standardized design, it is convenient to install the controller later.

[0021] The beneficial effects of the utility model are as follows: the utility model has the advantages of small size, light weight, and convenient installation. It is suitable for power supply control of 1-1000 square meters of LED display products, and can also be used for factory automation control, manual control, 433 remote control, 485 central control, collective control, wired control, multi-function card control, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a module block diagram of the utility model.

[0023] Figure 2 for Figure 1 Schematic diagram of the control module.

[0024] Figure 3 for Figure 1 Schematic diagram of the drive module.

[0025] Figure 4 for Figure 1 Schematic diagram of the communication module.

[0026] Figure 5 for Figure 1 Schematic diagram of the execution block in .

[0027] Figure 6 for Figure 1Schematic diagram of the power module.

[0028] Figure 7 for Figure 1 Schematic diagram of the middle button module.

[0029] Figure 8 for Figure 1 Schematic diagram of the indicator light.

[0030] Fig. 9 for Figure 1 Schematic diagram of the digital display tube.

[0031] Fig.10 It is a structural schematic diagram of the shell in the utility model.

[0032] Fig.11 It is a schematic diagram of the series cascade connection of the utility model.

[0033] Fig.12 It is a parallel cascade schematic diagram of the utility model. DETAILED DESCRIPTION

[0034] The utility model will be further described below in conjunction with the accompanying drawings and the accompanying drawings.

[0035] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0036] The terms “first”, “second”, “third”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0039] Embodiment 1:

[0040] like Figure 5As shown, a cascade control circuit includes a MOS tube, a relay, an input port and an output port, the output port is grounded, the input port is electrically connected to the relay, the MOS tube is used as a switch to control the on and off of the relay, and the input port and output port in the circuit are both network cable interfaces.

[0041] Embodiment 2:

[0042] like Figure 1 As shown, an LED controller includes a control module, a switching unit, a cascade control circuit and a power module;

[0043] The cascade control circuit, the power module and the on-off unit are electrically connected to the control module respectively;

[0044] The on-off unit is used to control the operation of the cascade control circuit;

[0045] The cascade control circuit includes a plurality of network cable ports;

[0046] The power supply module is used to supply power to the control module, the on-off unit and the cascade control circuit.

[0047] The utility model can control the start and close of the cascade control circuit through the driving module and the communication module, thereby realizing the switch of the controller, and has a wide application range.

[0048] The utility model can realize cascade control of multiple LED controllers through the network cable port. According to different network cable connection methods, it can be series cascade control or parallel cascade control.

[0049] The utility model has the advantages of small size, light weight, and convenient installation. It is suitable for power supply control of 1-1000 square meters LED display products, and can also be used for factory automation control, manual control, 433 remote control, 485 central control, collective control, wired control, multi-function card control, etc.

[0050] Embodiment 2:

[0051] On the basis of Example 1, Figure 2-6 As shown, the on-off unit includes a communication module, the communication module uses an SP3485EN chip, and the communication module is connected to the host computer for communication.

[0052] The host computer can be operated to control the control unit to work through the communication module.

[0053] The on-off unit includes a driving module, which uses an md7620 chip and is used to control the operation of a relay in a cascade control circuit.

[0054] The cascade control circuit includes a MOS tube, a relay and two network cable interfaces, and the MOS tube is used as a switch to control the on and off of the relay.

[0055] The power module adopts LM2596 chip, and the power module converts AC power into 12V and 3.3V for power supply.

[0056] The control module adopts the stc8h1k16 chip.

[0057] Figure 3 In the figure, com6 is a magnetic latching relay, 1 and 2 are coils, 3 and 4 are normally open contacts, connected to external terminals to control the on and off of the power.

[0058] Embodiment 3:

[0059] On the basis of Example 2, Figure 7-9 As shown, it also includes a key module and a digital display tube, both of which are electrically connected to the control module. The key module is used to control the cascade control circuit, and the digital display tube is used to display the working status of the controller.

[0060] The button module includes four buttons, namely closing, opening, remote control and address.

[0061] 1. When you press "Close" lightly, the closing light will light up, the opening light will go out and the equipment will be powered on.

[0062] 2. When you press "Open" lightly, the opening light will light up, the closing light will go out, and the equipment will be powered off.

[0063] It also includes an indicator light, which is used to display the working status of the controller.

[0064] The indicator lights include a closing indicator light, an opening indicator light and a learning indicator light.

[0065] The controller requires input of AC220v voltage, that is, the live wire, neutral wire, and shell grounding should be connected as required.

[0066] The controller output is 2 AC220V, and the power of each output is 3.6KW. (The output can connect 36 200w power supplies)

[0067] The controller needs to be operated by professionals. It should not be used in severe weather such as lightning, heavy rain, typhoon, etc. If there is any abnormality in the controller, it can be restarted only after professionals have eliminated the fault. The controller should not be placed in an open-air environment.

[0068] The temperature of the controller is -10℃—40℃, the working humidity is ≤40%, and the workload should not exceed 80% of the rated capacity. Long-term overload will reduce the service life of the controller.

[0069] Embodiment 4:

[0070] On the basis of Example 3, Fig.10 As shown, it also includes a shell, which is made of metal, and the controller is grounded through the shell.

[0071] The shell is designed according to the size of the screen power supply. Since the shell adopts a standardized design, it is convenient for the later installation of the controller. It can be more compatible with existing rental screens, floor tile screens, indoor and outdoor box screens, and is the same as the existing display screen power supply size (192mm*82mm*30mm).

[0072] Specific working principle:

[0073] When in use, the cascade control circuit is connected to the LED display screen via a network cable. By controlling the passage of the cascade control circuit, the operation of the entire controller can be controlled.

[0074] Specifically, the upper computer can be used to control through the communication module, can be controlled through the key module, or can be controlled through wireless control and a multi-function card. The key module mainly detects whether the installation is correct after the installation is completed.

[0075] When controlling display screens, each controller can control 36 display screens. If there are too many display screens, they can be controlled by multiple controllers, and multiple controllers can be connected in cascade.

[0076] Series cascade, such as Fig.11 As shown, connect the output port of the first controller to the input port of the second controller, connect the output port of the second controller to the input port of the third controller, and so on. After the master device issues a power-on command, all slaves start in sequence with a delay (this cascade mode is an overall delayed power on and off. Note: the devices cannot be controlled separately). It is suitable for starting a single large screen of 1-1000㎡ or more. 99 units can be cascaded.

[0077] Parallel cascade, such as Fig.12 As shown, connect the output port of the first controller to the output port of the second controller, connect the input port of the second controller to the input port of the third controller, and so on. After the master device issues a power-on command, all slaves can be started simultaneously or separately. Suitable for controlling multiple display screens. Cascade up to 99 units. (Can control 99 large screens)

[0078] The present utility model is not limited to the above-mentioned optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope defined by the claims of the present utility model fall within the protection scope of the present utility model.

Claims

1. A cascade control circuit, characterized in that: It includes a MOS tube, a relay, an input port and an output port, the output port is grounded, the input port is electrically connected to the relay, and the MOS tube is used as a switch to control the on and off of the relay.

2. An LED controller, comprising the cascade control circuit according to claim 1, characterized in that: It also includes a control module, a switching unit and a power module; The cascade control circuit, the power module and the on-off unit are electrically connected to the control module respectively; The on-off unit is used to control the operation of the cascade control circuit; The power supply module is used to supply power to the control module, the on-off unit and the cascade control circuit.

3. The LED controller according to claim 2, characterized in that: The on-off unit comprises a communication module, the communication module adopts an SP3485EN chip, and the communication module is connected to the host computer for communication.

4. The LED controller according to claim 2, characterized in that: The on-off unit includes a driving module, and the driving module adopts an md7620 chip.

5. The LED controller according to claim 3 or 4, characterized in that: It also includes a key module and a digital display tube, both of which are electrically connected to the control module. The key module is used to control the cascade control circuit, and the digital display tube is used to display the working status of the controller.

6. The LED controller according to claim 2, characterized in that: It also includes an indicator light, which is used to display the working status of the controller.

7. The LED controller according to claim 2, characterized in that: It also includes a shell, which is made of metal, and the controller is grounded through the shell.

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