Circuit board for collecting and controlling multiple paths of signals

Abstract

The utility model belongs to the technical field of circuit boards, and discloses a circuit board for collecting and controlling multipath signals, which comprises a PCB (printed circuit board) main board, and a collecting module, a debugging module, a communication module, a power supply interface and an output control module which are arranged on the PCB main board, the acquisition module comprises a main control chip mounted in the middle of the PCB mainboard, a signal acquisition terminal mounted on one side of the PCB mainboard and a plurality of high-speed optocouplers; the output control module comprises a plurality of power relays which are electrically connected with output pins of the main control chip respectively, and the output pin of each relay is electrically connected with a relay output port; and the power supply chip is electrically connected with the power supply interface. The signal acquisition and control circuit board supports the signal acquisition of eight channels, the acquired signal can support the range of 5V-24V, and the output control also supports the output of eight channels. Most requirements in an industrial environment are met by adopting a power relay; and the Darlington tube chip also improves the driving capability.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit board technical field, concretely relates to a kind of multi-channel signal acquisition and control's circuit board. BACKGROUND

[0002] Signal acquisition is a kind of more common requirement in industrial control, and in actual work, signal acquisition is carried out, and then analyzed and processed, to meet the requirements of different environments.Control circuit board often needs to control output according to different requirements, and signal acquisition and control constitute the most important part in industrial control.

[0003] At present, in industrial control, with the continuous enhancement of function, the quantity and quality of signal acquisition have also been significantly improved, and the traditional acquisition board has not many acquisition quantities, and the signal quality is not optimized, in addition, the control board is connected using flat cable, which obviously increases the complexity of connection.

[0004] Therefore, a kind of multi-channel signal acquisition and control's circuit board is developed to solve the above problems. UTILITY MODEL CONTENT

[0005] The utility model solves the technical problem to provide a kind of 8-way signal acquisition's multi-channel signal acquisition and control circuit board.

[0006] The utility model solves the technical problem and adopts the technical scheme: a kind of multi-channel signal acquisition and control's circuit board, including PCB mainboard, installation on the acquisition module of PCB mainboard, debugging module, communication module, power supply interface, output control module;The acquisition module includes the main control chip installed in the middle of PCB mainboard, signal acquisition terminal and multiple high-speed optocouplers installed in one side of PCB mainboard, the signal acquisition terminal is output pin and is electrically connected with the input pin of high-speed optocoupler, and the output pin of high-speed optocoupler is electrically connected with the input pin of main control chip;The output control module includes multiple power relays electrically connected with the output pin of main control chip, and the output pin of each relay is electrically connected with relay output port, and relay output port can export the output pin of all power relays, to facilitate connection and test;It further includes power chip electrically connected with power supply interface.

[0007] Further, the output control module further includes Darlington tube chip, the input pin of Darlington tube chip is electrically connected with the output pin of main control chip, and the output pin of Darlington tube chip is electrically connected with power relay.

[0008] Further, the debugging module includes interface and serial port conversion chip installed on the edge of PCB mainboard, the interface is electrically connected with serial port conversion chip, and the serial port conversion chip is electrically connected with main control chip.

[0009] Further, the communication module comprises a 485 chip, a signal isolation module electrically connected with the 485 chip, an output pin of the signal isolation module electrically connected with the main control chip, and a 485 signal interface electrically connected with an input pin of the 485 chip.

[0010] Further, the communication module comprises a 485 chip, a signal isolation module electrically connected with the 485 chip, an output pin of the signal isolation module electrically connected with the main control chip, and a 485 signal interface electrically connected with an input pin of the 485 chip.

[0011] Further, the communication module comprises a 485 chip, a signal isolation module electrically connected with the 485 chip, an output pin of the signal isolation module electrically connected with the main control chip, and a 485 signal interface electrically connected with an input pin of the 485 chip.

[0012] The signal acquisition and control circuit board of the utility model supports 8 channels of signal acquisition, and the acquisition signal can support 5V-24V range, and the output control also supports 8-way output.

[0013] The power relay meets most requirements in industrial environment, and the Darlington tube chip also increases driving capacity.

[0014] The signal acquisition and control of the utility model support 485 protocol communication, meet the connection with other controllers such as PLC, and can also be used for separate debugging, and increase the flexibility of the product. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is structure schematic view of the utility model;

[0016] Marked as: 1, PCB mainboard;2, main control chip;3, high-speed optocoupler;4, signal acquisition terminal;5, Darlington tube chip;6, power relay;7, relay output;8, interface;9, serial port conversion chip;10, 485 signal interface;11, 485 chip;12, signal isolation module;13, isolation power module;14, power supply interface;15, power supply chip. DETAILED DESCRIPTION

[0017] The utility model is further explained in connection with the drawings and specific implementation.

[0018] As Figure 1The utility model discloses a kind of multi-channel signal acquisition and control circuit board shown, including PCB mainboard 1, installation on PCB mainboard 1 Acquisition module, debugging module, communication module, power supply interface 14, output control module;It further includes the power supply chip 15 electrically connected with power supply interface 14.Acquisition module includes the main control chip 2 installed in the middle of PCB mainboard 1, signal acquisition terminal 4 and multiple high-speed optocoupler 3 installed in one side of PCB mainboard 1, signal acquisition terminal 4 is output pin respectively with the input pin of high-speed optocoupler 3 electrically connected, and the output pin of high-speed optocoupler 3 is electrically connected with the input pin of main control chip 2;The circuit board of the utility model uses multi-channel signal acquisition, and 8 are designed in high-speed optocoupler 3.In industrial environment, different voltage signals will be used, commonly used are 5V, 12V, 24V etc., and main control chip 2 cannot bear high voltage, in the embodiment, the form of high-speed optocoupler 3 is selected to carry out acquisition, can avoid the problem of control chip due to excessively high voltage, high-speed optocoupler 3 can also avoid signal delay, and can ensure that signal change is basically synchronous.Power supply interface 14 can input 4.5V-40V wide voltage, and after input voltage passes through DC-DC power supply chip 15, 5V power required by system can be obtained, to ensure that system runs stably.

[0019] On the basis, output control module includes multiple power relays 6 respectively with the output pin of main control chip 2 electrically connected, and the output pin of each relay is electrically connected with relay output 7, and power relay 6 can meet the demand of most voltage and current in industrial control environment, and relay output 7 can lead out the output of all power relays 6, to facilitate connection and test;Output control module further includes darlington tube chip 5, and the input pin of darlington tube chip 5 is respectively electrically connected with the output pin of main control chip 2, and the output pin of darlington tube chip 5 is respectively electrically connected with power relay 6.Power relay 6 is easy to produce spark when closing, which can cause damage to the pin of main control chip 2, in order to avoid this situation, darlington tube chip 5 is used between main control chip 2 and power relay 6, effectively solve the damage to the pin of main control chip 2 due to spark of power relay 6, and darlington tube chip 5 can also increase driving capacity.

[0020] On the basis, debugging module includes interface 8 installed on the side of PCB mainboard 1, serial port conversion chip 9, and interface 8 is electrically connected with serial port conversion chip 9, and serial port conversion chip 9 is electrically connected with main control chip 2.The No.6, No.7 pin of serial port conversion chip 9 is respectively connected with the No.30, No.31 pin of main control chip 2, and the No.1, No.2 pin of serial port conversion chip 9 is respectively connected with type-c interface 8.In the interface 8 in the embodiment, type-c interface 8 is adopted, type-c interface 8 is convenient for independent development and debugging in application, and when using, the product can be connected to independently designed software for debugging, to increase the flexibility of product.

[0021] On the basis of the above, the communication module comprises a 485 chip 11, a signal isolation module 12 electrically connected with the 485 chip 11, an output pin of the signal isolation module 12 electrically connected with the main control chip 2, and a 485 signal interface 10 electrically connected with an input pin of the 485 chip 11. Further, an isolation power supply module 13 is provided for separately supplying power to the 485 chip 11, so as to ensure the stability of the 485 chip 11 during operation. The use of the signal isolation module 12 can ensure that the signal of the 485 chip 11 is not disturbed by noise in the industrial environment during transmission, and ensure the integrity and accuracy of the signal transmission information during the communication process. At the same time, because the 485 signal interface 10 is configured, the matching software can be accessed for real-time testing, and the user can adjust according to the actual needs, so as to ensure the applicability of the product in use.

[0022] On the basis of the above, further comprising resistors, capacitors and other components required for circuit connection.

[0023] The above-described specific embodiments further specifically describe the purpose, technical solutions and advantages of the utility model, and it should be understood that the above-described specific embodiments are merely specific embodiments of the utility model and are not intended to limit the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A circuit board for multiplexed signal acquisition and control, characterized by: Including PCB mainboard, the acquisition module, debugging module, communication module, power supply interface, output control module installed on the PCB mainboard, the acquisition module includes the main control chip installed in the middle of the PCB mainboard, the signal acquisition terminal installed on one side of the PCB mainboard and a plurality of high-speed optocouplers, the signal acquisition terminal is output pin respectively with the input pin of high-speed optocoupler electric connection, the output pin of high-speed optocoupler and the input pin of main control chip electric connection, the output control module includes a plurality of power relays respectively with the output pin of main control chip electric connection, the output pin of each relay and the relay output port electric connection, the relay output port can export the output of all power relays, convenient for connection and test, still include the power supply chip with the power supply interface electric connection.

2. A circuit board for multiplexed signal acquisition and control as recited in claim 1, wherein: The output control module further includes Darlington tube chip, the input pin of Darlington tube chip is respectively connected with the output pin of main control chip, the output pin of Darlington tube chip is respectively connected with power relay.

3. A circuit board for multiplexed signal acquisition and control as recited in claim 1, wherein: The debugging module includes the interface installed on the edge of the PCB mainboard, the serial port conversion chip, the interface is connected with the serial port conversion chip, and the serial port conversion chip is connected with the main control chip.

4. A circuit board for multiplexed signal acquisition and control as recited in claim 1, wherein: The communication module includes 485 chip, signal isolation module connected with 485 chip, output pin of signal isolation module is connected with main control chip, 485 signal interface connected with 485 chip input pin.

5. A multi-channel signal acquisition and control circuit board as defined in claim 4, wherein: the plurality of signal acquisition and control circuit boards are connected in series to form a multi-channel signal acquisition and control circuit board. Still include the isolation power module for the separate power supply of 485 chip. ​ 6. A circuit board for multiplexed signal acquisition and control as defined in claim 1, wherein: The number of high-speed optocouplers is 8.

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