Digital controller

Abstract

A digital controller comprises a case and a main board, and is characterized in that the main board is provided with a main control module, a multi-path input control module, a multi-path output control module and a plurality of control output interfaces; the multi-path input control module comprises a plurality of control keys, and the control keys are connected with the main control module and are configured to send level signals to the main control module every time the control keys are touched, so that the states of the control output interfaces corresponding to the control keys are switched; each control key is provided with a state display lamp; the multi-path output control module comprises a plurality of relays in one-to-one pairing with the control output interfaces and a relay driving circuit for driving the relays, and the relay driving circuit is controlled by the main control module; the common end of the relay is connected with one pin of the control output interface, the normally closed end is connected with the other pin of the control output interface, and the normally open end is connected with the signal source.

Description

Technical Field

[0001] The utility model relates to broadcasting equipment, in particular to a digital controller. Background Art

[0002] Digital controllers are devices used in broadcast systems. Their primary function is to control devices and sound sources within each zone based on on-site needs. For example, they manage device power and enable and disable devices in each zone. To cope with multiple zones and the numerous devices within them, digital controllers require multiple control output interfaces and buttons to control the output status of each interface. In existing technology, the main control CPU allocates a pin for each button to receive its level signal. This large number of buttons strains CPU pin resources, while the limited number of available CPU pins limits the number of control output interfaces, necessitating optimization. Utility Model Content

[0003] This utility model proposes a digital controller, the purpose of which is to provide a multi-zone control output interface, so that users can easily manage each control output interface. It is specifically achieved through the following technical means:

[0004] A digital controller includes a chassis and a mainboard, wherein the mainboard is provided with a main control module, a multi-channel input control module, a multi-channel output control module and a plurality of control output interfaces;

[0005] The multi-channel input control module includes a plurality of control buttons, each of which is connected to the main control module and configured to send a level signal to the main control module each time it is pressed, so as to switch the state of the control output interface corresponding to the control button; each control button is equipped with a status indicator light;

[0006] The multi-channel output control module includes multiple relays paired one-to-one with each control output interface, and a relay drive circuit that drives the relay, and the relay drive circuit is controlled by the main control module; the common end of the relay is connected to one pin of the control output interface, the normally closed end is connected to the other pin of the control output interface, and the normally open end is connected to the signal source.

[0007] In one or more embodiments of the present invention, the relay driving circuit includes a transistor, a base of the transistor is connected to the main control module, a collector of the transistor is connected to the electromagnetic part of the relay, and an emitter of the transistor is grounded.

[0008] In one or more embodiments of the present invention, the main control module includes a CPU; the multiple control buttons are divided into two groups, wherein each control button in one group is connected to a DC source to send a high-level signal to the corresponding pin of the CPU when it is touched, and each control button in the other group is connected to a ground terminal to send a ground signal to the corresponding pin of the CPU when it is touched; and a CPU pin is shared by a control button connected to the DC source and a control button connected to the ground terminal.

[0009] In one or more embodiments of the present invention, the mainboard is provided with a power supply module, which includes a mains power interface, a filtering unit, a power switch, a transformer for converting 220V mains power into 24V AC power, and a power supply circuit for rectifying the 24V AC power into a DC+24V DC voltage.

[0010] In one or more embodiments of the present invention, the mainboard is further provided with a cascade network port 485 communication module for cascading networking between digital controllers of the same model.

[0011] In one or more embodiments of the present invention, the mainboard is further provided with an external network port 485 communication module for control networking between digital controllers of different models.

[0012] In one or more embodiments of the present invention, the mainboard is further provided with an address code selection module for configuring the address of the current device.

[0013] In one or more embodiments of the present invention, the mainboard is further provided with a plurality of control input interfaces, which are connected to the main control module and are used for external devices to send control signals to the main control module to switch the state of the corresponding control output interface.

[0014] Compared with the existing technology, the advantages of this utility model are reflected in: providing a rich control output interface, the user only needs to use the control buttons on the chassis panel to manage the status of each control output interface to meet the opening and closing requirements of each partition device. At the same time, considering the problem of CPU pin resource constraints, this patent has multiplexed the connection pins of the CPU for the control buttons, with one pin corresponding to two control buttons. By detecting the rising / falling edge of the level signal to distinguish the touch status of the control button, the CPU pin resource configuration is optimized, which can realize the control of more partitions and reduce CPU costs. It has better economic, practical and technical advantages and is suitable for promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of the intelligent partitioner (front).

[0016] Figure 2 This is a structural diagram of the intelligent partitioner (back).

[0017] Figure 3 This is the principle block diagram of the intelligent partitioner.

[0018] Figure 4 This is the circuit schematic diagram of the intelligent partitioner.

[0019] Figure 5 This is the wiring diagram of the main control module CPU and input control module of the intelligent partitioner.

[0020] Figure 6 This is the schematic diagram of the relay drive circuit of the intelligent partitioner.

[0021] Figure 7 This is a circuit board diagram of the intelligent partitioner. DETAILED DESCRIPTION

[0022] The following is combined with Figures 1 to 7 , further describe this application plan:

[0023] A digital controller includes a chassis and a mainboard, wherein the mainboard is provided with a power module 1, a main control module 2, a multi-channel input control module 3, a multi-channel output control module 4 and 16 control output interfaces 5;

[0024] The power supply module 1 includes a mains power interface 11, a filter unit 12, a power switch 13, a transformer 14 for converting 220V mains power into 24V AC power, and a power supply circuit 15 for rectifying the 24V AC power into a DC+24V DC voltage;

[0025] The multi-channel input control module 3 includes 16 control buttons 31, which are connected to the main control module 2 and configured to send a level signal to the main control module 2 each time it is pressed, so as to switch the state of the control output interface 5 corresponding to the control button 31. Each control button 31 is equipped with a status indicator light 32.

[0026] The multi-channel output control module 4 includes 16 relays 41 paired one by one with each control output interface 5, and a relay drive circuit 42 for driving the relay 41, and the relay drive circuit 42 is controlled by the main control module 2; the common end of the relay 41 is connected to one pin of the control output interface 5, the normally closed end is connected to the other pin of the control output interface 5, and the normally open end is connected to the signal source, and the signal source is a DC+24V voltage signal provided by the power supply module 1; thus, the user can manually control the corresponding area of ​​the 16 outputs to control the output of a DC+24V voltage signal or a dry contact signal; at the same time, the status indicator light 32 is connected to the main control module 2, which indicates the current output status of the corresponding control output interface 5 (for example, green indicates dry contact signal output, and red indicates DC+24V voltage signal output) by changing the light color or on and off changes of the status display light 32.

[0027] The present invention provides a variety of control output interfaces 5. The user only needs to use the control buttons 31 on the chassis panel to manage the status of each control output interface 5 to meet the opening and closing requirements of each partition device.

[0028] Furthermore, the relay drive circuit 42 includes a transistor, the base of which is connected to the main control module, the collector of which is connected to the electromagnetic part of the relay 41, and the emitter of which is grounded; the CPU drives the electromagnetic part of the relay 41 to turn on / off through the current amplification effect of the transistor, thereby realizing the switching of the connecting line.

[0029] The main control module 2 includes a CPU, and the multiple control buttons 5 are divided into two groups, wherein each control button 5 in one group (group A) is connected to a DC source VCC to send a high-level signal to the corresponding pin of the CPU when it is touched, and each control button 5 in the other group (group B) is connected to a ground terminal GND to send a ground signal to the corresponding pin of the CPU when it is touched; and a control button connected to the DC source (i.e., a control button in group A) and a control button connected to the ground terminal (i.e., a control button in group B) jointly reuse a CPU pin; for example, button SW1 and button SW9 are jointly connected to pin 1 of the CPU. Through the multiplexing design on pin 1 of the CPU: by detecting the rising / falling edge of the level signal to distinguish the touch status of the control button 5, the problem of CPU pin resource shortage is solved, the CPU pin resource configuration is optimized, more partitioned control can be achieved and CPU cost can be reduced, and it has better economy, practicality and technicality.

[0030] Furthermore, the mainboard is also provided with a cascade network port 485 communication module 6, which is used for cascade networking between digital controllers of the same model, realizing cascade control between machines of the same model to form a large multi-channel digital control function.

[0031] Furthermore, the mainboard is also provided with an external network port 485 communication module 7, which is used for control networking between digital controllers of different models, and realizes the communication control between machines of different models to form a large digital control system.

[0032] Furthermore, the mainboard is also provided with an address code selection module 8 for configuring the address of the current device, so as to achieve the function of non-duplication and non-interference of addresses when large-scale multi-channel digital control functions are formed between machines of the same model.

[0033] Furthermore, the main board is also provided with 16 control input interfaces 9, each control input interface 9 corresponds one-to-one to each control output interface 5; the control input interface 9 is connected to the main control module 2, and is used for the external device to send a control signal to the main control module 2 to switch the state of the control output interface 5 corresponding to the control.

[0034] The above preferred embodiments should be regarded as examples of the implementation methods of the present application scheme. Any technical deductions, replacements, improvements, etc. that are identical or similar to the present application scheme or made based on it should be regarded as within the scope of protection of this patent.

Claims

1. A digital controller, comprising a chassis and a motherboard, characterized in that: The mainboard is provided with a main control module, a multi-channel input control module, a multi-channel output control module and a plurality of control output interfaces; The multi-channel input control module includes a plurality of control buttons, each of which is connected to the main control module and configured to send a level signal to the main control module each time it is pressed, so as to switch the state of the control output interface corresponding to the control button; each control button is equipped with a status indicator light; The multi-channel output control module includes multiple relays paired one-to-one with each control output interface, and a relay drive circuit that drives the relay, and the relay drive circuit is controlled by the main control module; the common end of the relay is connected to one pin of the control output interface, the normally closed end is connected to the other pin of the control output interface, and the normally open end is connected to the signal source.

2. The digital controller according to claim 1, characterized in that: The signal source is a DC+24V voltage signal.

3. The digital controller according to claim 1, characterized in that: The relay drive circuit includes a transistor, a base of the transistor is connected to the main control module, a collector of the transistor is connected to the electromagnetic part of the relay, and an emitter of the transistor is grounded.

4. The digital controller according to claim 1, characterized in that: The main control module includes a CPU; the multiple control buttons are divided into two groups, wherein each control button in one group is connected to a DC source so as to send a high-level signal to a corresponding pin of the CPU when the control button is touched, and each control button in the other group is connected to a ground terminal so as to send a ground signal to a corresponding pin of the CPU when the control button is touched; and a CPU pin is shared by a control button connected to the DC source and a control button connected to the ground terminal.

5. The digital controller according to claim 1, characterized in that: The mainboard is provided with a power supply module, which includes a mains power interface, a filtering unit, a power switch, a transformer for converting 220V mains power into 24V AC power, and a power supply circuit for rectifying the 24V AC power into a DC+24V DC voltage.

6. The digital controller according to claim 1, characterized in that: The mainboard is also provided with a cascade network port 485 communication module for cascading networking between digital controllers of the same model.

7. The digital controller according to claim 1, characterized in that: The mainboard is also provided with an extranet port 485 communication module for control networking between digital controllers of different models.

8. The digital controller according to claim 1, characterized in that: The mainboard is also provided with an address code selection module for configuring the address of the current device.

9. The digital controller according to claim 1, characterized in that: The mainboard is also provided with a plurality of control input interfaces, which are connected to the main control module and are used for external devices to send control signals to the main control module to switch the state of the corresponding control output interface.

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