A differential pulse output control module

Abstract

The utility model aims at providing a kind of differential pulse output control module with small system volume, high stability and expansibility and high output signal compatibility.The utility model includes processing control module and signal input output module, the processing control module is communicated with host computer, the signal input output module includes differential output unit, bidirectional digital input unit and bidirectional digital output unit, the differential output unit the bidirectional digital input unit and bidirectional digital output unit are all communicated with the processing control module connection, the differential output unit exports control signal to the actuator outside, the bidirectional digital input unit is connected with the control device outside electric signal, the bidirectional digital output unit is connected with the feedback device outside electric signal.The utility model is applied to the technical field of output control module.

Description

Technical Field

[0001] This invention relates to the technical field of output control modules, and particularly to a differential pulse output control module. Background Technology

[0002] To meet the demands of high-efficiency production and specific mechanical fields, such as machining centers, industrial robots, and high-precision 3D printers, multiple sets of drive mechanisms, such as stepper motors or servo motors, are required to work collaboratively to achieve high-precision machining operations, joint control, and coordinated motion. However, as the manufacturing industry moves towards intelligence and high precision, the requirements for motion control systems are constantly increasing, especially in areas such as multi-axis synchronous control, long-distance signal transmission, and complex control logic. Although existing technologies meet the needs of industrial control to some extent, some significant shortcomings remain. For example, most multi-channel control modules only support single-channel or dual-channel signal output. These modules typically rely on external drive circuits to expand their functionality, increasing system complexity and cost. For applications requiring four or more channels of control, these modules are inadequate and struggle to meet the demands of multi-axis synchronous control. Furthermore, the number and functionality of digital input and output ports are limited, failing to address complex control logic and system integration requirements. To meet the needs of multi-channel control, differential signal output, and rich digital input / output functions, existing systems typically require the combination of multiple modules and external components, increasing system size, weight, and cost. This diverse range of solutions not only increases the difficulty of design and maintenance, but also reduces the reliability and scalability of the system.

[0003] Therefore, a differential pulse output control module with small system size, high stability and scalability, and high output signal compatibility is needed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a differential pulse output control module with small system size, high stability and scalability and high output signal compatibility.

[0005] The technical solution adopted by this utility model is as follows: This utility model includes a processing control module and a signal input / output module. The processing control module communicates with a host computer. The signal input / output module includes a differential output unit, a bidirectional digital input unit, and a bidirectional digital output unit. The differential output unit, the bidirectional digital input unit, and the bidirectional digital output unit are all communicatively connected to the processing control module. The differential output unit outputs control signals to an external actuator. The bidirectional digital input unit is electrically connected to an external control device. The bidirectional digital output unit is electrically connected to an external feedback device.

[0006] As can be seen from the above scheme, the processing and control module is used to communicate with the host computer to obtain control commands and feedback status information. It also processes and decodes the control commands to control the differential output unit, the bidirectional digital input unit, and the bidirectional digital output unit to operate. The differential output unit is connected to the actuator, converting the single-ended signal output by the processing and control module into a differential signal and sending it to the actuator for execution. The I / O port of the processing and control module is connected to the bidirectional digital input unit, which, through connection to the control device, receives control signals from the operator using control buttons such as start / stop, direction, acceleration, and deceleration. The bidirectional digital output unit is connected to external feedback devices such as status indicator lights and alarm lights, and the processing and control module achieves status feedback through the bidirectional digital output unit.

[0007] In a preferred embodiment, the differential output unit includes a driver, a plurality of single-ended signal ports of the driver are connected to the processing control module, and a plurality of sets of differential signal ports of the driver are connected to an external actuator control terminal.

[0008] In a preferred embodiment, the bidirectional digital input unit includes a digital input receiver and a first digital isolator. Several input ports of the digital input receiver are connected to an external control device, several output ports of the digital input receiver are connected to the receiving ports of the processing control module, the control port of the first digital isolator is connected to the processing control module, and the output terminal of the first digital isolator is connected to the control port of the digital input receiver.

[0009] In a preferred embodiment, the bidirectional digital output unit includes a plurality of second digital isolators, the control ports of the plurality of second digital isolators are connected to the processing control module, and the output terminals of the plurality of second digital isolators are correspondingly connected to the control ports of an external feedback device.

[0010] In a preferred embodiment, the processing control module includes a communication unit, a processing unit, and an FPGA control unit. The communication unit is connected to a host computer, the processing unit is electrically connected to the communication unit, the FPGA control unit is connected to the processing unit via an isolator unit, and the differential output unit, the bidirectional digital input unit, and the bidirectional digital output unit are all electrically connected to the FPGA control unit. Attached Figure Description

[0011] Figure 1 This is a system block diagram of this utility model; Figure 2 This is the circuit schematic of the differential output unit; Figure 3 This is the circuit schematic of the bidirectional digital input unit; Figure 4 This is the circuit schematic of the bidirectional digital output unit; Figure 5 This is the circuit schematic of the FPGA control unit; Figure 6 This is the circuit schematic diagram of the communication unit. Detailed Implementation

[0012] like Figures 1 to 6 As shown, in this embodiment, the present invention includes a processing control module 1 and a signal input / output module 2. The processing control module 1 communicates with a host computer. The signal input / output module 2 includes a differential output unit 21, a bidirectional digital input unit 22, and a bidirectional digital output unit 23. The differential output unit 21, the bidirectional digital input unit 22, and the bidirectional digital output unit 23 are all communicatively connected to the processing control module 1. The differential output unit 21 outputs control signals to an external actuator. The bidirectional digital input unit 22 is electrically connected to an external control device. The bidirectional digital output unit 23 is electrically connected to an external feedback device.

[0013] In this embodiment, the processing control module 1 includes a communication unit 11, a processing unit 12, and an FPGA control unit 13. The communication unit 11 is connected to a host computer, the processing unit 12 is connected to the communication unit 11 by electrical signals, the FPGA control unit 13 is connected to the processing unit 12 by an isolator unit 14, and the differential output unit 21, the bidirectional digital input unit 22, and the bidirectional digital output unit 23 are all connected to the FPGA control unit 13 by electrical signals.

[0014] The communication unit 11 includes an ASIC integrated chip U701A / U701B of model LAN9253. The ASIC integrated chip U701A / U701B is connected to the host computer and communicates with the host computer using a coupler based on the EtherCAT protocol. The processing unit 12 includes a processing chip of model APM32F407RGT6, which performs rapid data processing on the input information received by the FPGA control unit 13 and feeds it back to the host computer through the communication unit 11. The FPGA control unit 13 includes a programmable logic chip U1101 of model GW2A-LV18. The programmable logic chip U1101 outputs three functional signals: A / B phase pulse mode, pulse + direction mode, and CW / CCW mode, thereby adapting to the drive of various actuators.

[0015] In this embodiment, the differential output unit 21 includes a driver U1201 of model MAX3030E. The four single-ended signal ports of the driver U1201 are connected to the FPGA control unit 13, and the four sets of differential signal ports of the driver U1201 are connected to the external actuator control terminal, sending differential signals to control its start. The external actuator, such as a servo motor, receives the control signals and performs the corresponding actions.

[0016] In this embodiment, the bidirectional digital input unit 22 includes a digital input receiver U1301 (model CA-IS3980P) and a first digital isolator U1302 (model CA-IS3211VBJ). Several input ports of the digital input receiver U1301 are connected to an external control device, and several output ports of the digital input receiver U1301 are connected to the receiving ports of the FPGA control unit 13. The control port of the first digital isolator U1302 is connected to a first field-effect transistor (FET). The FPGA control unit 13 is connected to the gate of the first FET, thereby controlling the output of the first digital isolator U1302 to be either the supply voltage or 0V. The output of the first digital isolator U1302 is connected to the COM port of the digital input receiver U1301. The COM port is connected to 24V or 0V, determining whether the digital input receiver U1301 operates in a current-source input mode or a current-sink input mode.

[0017] In this embodiment, the bidirectional digital output unit 23 includes two sets of second digital isolators of model CA-IS3211VBJ. The control ports of the two sets of second digital isolators are connected to the FPGA control unit 13, and the output terminals of the two sets of second digital isolators are connected to the control ports of external feedback devices. The FPGA control unit 13 controls the second digital isolators through corresponding second field-effect transistors, so that their corresponding outputs switch between sink current digital output and spool current digital output. The feedback device is a status indicator light or an alarm light.

[0018] Although the embodiments of this utility model are described with reference to actual solutions, they do not constitute a limitation on the meaning of this utility model. For those skilled in the art, modifications to the implementation schemes and combinations with other schemes based on this specification are obvious.

Claims

1. A differential pulse output control module, characterized in that: It includes a processing control module (1) and a signal input / output module (2). The processing control module (1) communicates with a host computer. The signal input / output module (2) includes a differential output unit (21), a bidirectional digital input unit (22), and a bidirectional digital output unit (23). The differential output unit (21), the bidirectional digital input unit (22), and the bidirectional digital output unit (23) are all connected to the processing control module (1). The differential output unit (21) outputs control signals to an external actuator. The bidirectional digital input unit (22) is electrically connected to an external control device. The bidirectional digital output unit (23) is electrically connected to an external feedback device.

2. The differential pulse output control module according to claim 1, characterized in that: The differential output unit (21) includes a driver (U1201), several single-ended signal ports of the driver (U1201) are connected to the processing control module (1), and several sets of differential signal ports of the driver (U1201) are connected to an external actuator control terminal.

3. The differential pulse output control module according to claim 1, characterized in that: The bidirectional digital input unit (22) includes a digital input receiver (U1301) and a first digital isolator (U1302). Several input ports of the digital input receiver (U1301) are connected to an external control device, several output ports of the digital input receiver (U1301) are connected to the receiving port of the processing control module (1), the control port of the first digital isolator (U1302) is connected to the processing control module (1), and the output terminal of the first digital isolator (U1302) is connected to the control port of the digital input receiver (U1301).

4. The differential pulse output control module according to claim 1, characterized in that: The bidirectional digital output unit (23) includes several second digital isolators. The control ports of the several second digital isolators are connected to the processing control module (1), and the output terminals of the several second digital isolators are connected to the control ports of external feedback devices.

5. A differential pulse output control module according to claim 1, characterized in that: The processing control module (1) includes a communication unit (11), a processing unit (12), and an FPGA control unit (13). The communication unit (11) is connected to the host computer. The processing unit (12) is electrically connected to the communication unit (11). The FPGA control unit (13) is connected to the processing unit (12) through an isolator unit (14). The differential output unit (21), the bidirectional digital input unit (22), and the bidirectional digital output unit (23) are all electrically connected to the FPGA control unit (13).

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