General language bus interface remote I / O module system and use method thereof

Abstract

The invention relates to the technical field of signal transmission, in particular to a universal language bus interface remote I / O module system and a use method thereof. The analog quantity module and the digital quantity module are used for collecting analog signals or digital signals from various sensors and devices, the analog signals comprise an analog quantity input system, an I / O analog quantity output system and a Modbus network module, and the Modbus network module is used for a communication network to transmit data to a control center to be processed and controlled. And the digital quantity module comprises a digital quantity input system, a digital quantity output system and a Modbus network module which is used for transmitting data to a control center for processing and controlling through a communication network. According to the technical scheme, data and control signals are transmitted through a wireless or wired network, the usage amount of cables is reduced, and the cable cost is reduced; and remote monitoring and control functions can be realized through remote control, and the number of on-site monitoring equipment is reduced, so that the equipment investment is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of signal transmission, and in particular to a universal language bus interface remote I / O module system and a use method thereof. Background Art

[0002] With the continuous development of industrial automation, enterprises have higher and higher requirements for monitoring and control of production processes. Traditional on-site monitoring and control methods have many shortcomings, such as scattered monitoring points, difficult data collection, and untimely transmission of control instructions. These problems have seriously restricted the improvement of industrial automation levels.

[0003] Existing technology, remote I / O technology is a technology that realizes the data acquisition and control functions of field equipment through remote communication. By introducing remote I / O technology, the data acquisition and control functions of field equipment can be integrated into the remote I / O module, and then the data is transmitted to the control center through the communication network for processing and control; currently the accuracy of data acquisition and the speed of control instruction transmission are not fast enough.

[0004] Therefore, it is necessary to design a universal language bus interface remote I / O module system to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a universal language bus interface remote I / O module system to overcome the above-mentioned deficiencies in the current prior art.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A universal language bus interface remote I / O module system includes an analog quantity module and a digital quantity module for collecting analog signals or digital signals from various sensors and devices, and a power supply. The analog signal includes an analog quantity input system, an I / O analog quantity output system, and a Modbus network module for transmitting data to a control center for processing and control via a communication network. The digital quantity module includes a digital quantity input system, a digital quantity output system, and a Modbus network module for transmitting data to a control center for processing and control via a communication network.

[0008] Preferably, the analog input system includes an IO analog input and output module for receiving analog signals, a signal amplification circuit module for amplifying transmission signals, an A / D conversion circuit module for converting analog signal data, and an analog signal input microcontroller for receiving and transmitting analog signals.

[0009] Preferably, the analog signal input single chip microcomputer is also connected to an optical coupler isolation module.

[0010] Preferably, the I / O analog output system includes an analog output microcontroller for receiving data from the analog input system, a D / A conversion module for converting common mode into analog quantity, an analog output signal amplification module for amplifying the analog signal converted by the D / A conversion module, and an I / O analog output module for outputting the analog signal to a control system or a data processing center.

[0011] Preferably, the digital quantity input system includes an IO digital quantity input module for receiving digital signals, a digital quantity input microcontroller for receiving digital quantity data and sending digital quantity data, and a digital quantity optocoupler isolation module for protecting the transmission of the digital quantity input microcontroller.

[0012] Preferably, the digital output system includes a digital output microcontroller for receiving digital data transmitted by an IO digital input module in a Modbus network, a digital output optocoupler isolation module for protecting the digital output microcontroller transmission, and an I / O digital output module for outputting digital data to a control system or a data processing center.

[0013] A method for using a universal language bus interface remote I / O module system, characterized in that: an IO analog quantity input and output module transmits a signal to a signal amplification circuit module, and an analog-to-digital conversion A / D conversion circuit module converts a differential mode into a common mode as the input of an analog-to-digital conversion chip MAX1270, and after the analog-to-digital conversion is performed into a digital quantity, the analog quantity signal is transmitted to an analog quantity input microcontroller through an optical coupler, and the analog quantity signal input microcontroller receives the digital quantity data and sends it to a Modbus network module, and at the same time, the optical coupler is isolated and protected to realize analog quantity conversion input; in analog quantity output, the Modbus network module transmits data and transmits the signal to the analog quantity output microcontroller through an optical coupler. The microcontroller is converted into analog quantity by the D / A conversion module digital-to-analog chip MAX525, amplified by the analog output signal amplifier module operational amplifier LM348, and then output by the analog output module; the IO digital input module transmits the received signal to the digital optical coupling isolation module and the digital input microcontroller, and the digital input microcontroller receives the digital analog data and sends it to the data receiving and sending on the Modbus network, and at the same time, the optical coupling isolation protection is provided; in the digital output, the Modbus network writes data to transmit the signal to the digital output microcontroller, and after passing through the digital output optical coupling isolation module, it is output by the I / O digital output module.

[0014] The beneficial effects of the present invention are: the technical solution of the present invention transmits data and control signals through wireless or wired networks, reducing the use of cables and lowering cable costs; remote monitoring and control functions can be achieved through remote control, reducing the number of on-site monitoring equipment, thereby saving equipment investment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of a bus interface remote I / O module system of a universal language of the present invention;

[0016] In the figure: 1. IO analog input and output module; 2. Signal amplification circuit module; 3. A / D conversion circuit module; 4. Analog signal input microcontroller; 5. Modbus network module; 7. Analog output microcontroller; 8. D / A conversion module; 9. Analog output signal amplification module; 10. I / O analog output module; 11. IO digital input module; 12. Digital optocoupler isolation module; 13. Digital input microcontroller; 16. Digital output microcontroller; 17. Digital output optocoupler isolation module; 18. I / O digital output module. DETAILED DESCRIPTION

[0017] Reference Figure 1 , a universal language bus interface remote I / O module system, which includes an analog quantity module and a digital quantity module for collecting analog signals or digital signals from various sensors and devices, and a power supply;

[0018] The analog signal includes an analog input system, an I / O analog output system, and a Modbus network module 5 for transmitting data to a control center for processing and control over a communication network;

[0019] The analog quantity input system comprises an IO analog quantity input and output module 1 for receiving analog signals, a signal amplifying circuit module 2 for amplifying transmission signals, an A / D conversion circuit module 3 for converting analog signal data, and an analog quantity signal input single chip computer 4 for receiving and transmitting analog signals;

[0020] The A / D conversion circuit module 3 converts the differential mode into the common mode as the input of the analog-to-digital conversion chip MAX1270;

[0021] In order to improve the transmission protection of the analog signal input single chip microcomputer 4, the analog signal input single chip microcomputer 4 is also connected to an optical coupler isolation module.

[0022] The IO analog input and output module 1 transmits the signal to the signal amplification circuit module 2, and the differential mode is converted into the common mode through the analog-to-digital conversion circuit module 3, which serves as the input of the analog-to-digital conversion chip MAX1270. After the analog-to-digital conversion is completed, the analog signal is transmitted to the analog signal input microcontroller 4 through the optical coupler. The analog signal input microcontroller 4 receives the digital data and sends it to the Modbus network module 5. At the same time, the optical coupler is isolated and protected to realize the analog conversion input;

[0023] The I / O analog output system includes an analog output microcontroller 7 for receiving data from the analog input system, a D / A conversion module 8 for converting a common mode into an analog quantity, an analog output signal amplifying module 9 for amplifying the analog quantity signal converted by the D / A conversion module 8, and an I / O analog output module 10 for outputting the analog quantity signal to a control system or a data processing center;

[0024] In analog output, the Modbus network module 5 transmits data and transmits the signal to the analog output microcontroller 7 through the optical coupler, and after being converted into analog quantity by the digital-to-analog chip MAX525 of the D / A conversion module 8, it is amplified by the analog output signal amplifier module 9, the operational amplifier LM348, and then output by the analog output module 10;

[0025] The digital quantity module includes a digital quantity input system, a digital quantity output system and a Modbus network module used for transmitting data to a control center for processing and control via a communication network;

[0026] The digital quantity input system includes an IO digital quantity input module 11 for receiving digital signals, a digital quantity input microcontroller 13 for receiving digital quantity data and sending digital quantity data, and a digital quantity optical coupling isolation module 12 for protecting the transmission of the digital quantity input microcontroller 13;

[0027] The IO digital quantity input module 11 transmits the received signal to the digital quantity optical coupling isolation module 12 and the digital quantity input single chip computer 13. The digital quantity input single chip computer 13 receives the digital quantity analog quantity data and sends it to the data receiving and transmitting on the Modbus network, and the optical coupling isolation protection is provided at the same time.

[0028] The digital quantity output system includes a digital quantity output microcontroller 16 for receiving digital data transmitted by the IO digital quantity input module 11 in the Modbus network, a digital quantity output optocoupler isolation module 17 for protecting the digital quantity output microcontroller 16 transmission, and an I / O digital quantity output module 18 for outputting digital quantity data to a control system or a data processing center;

[0029] In digital output, the Modbus network writes data to transmit the signal to the digital output microcontroller 16, passes through the digital output optocoupler isolation module 17, and is then output by the I / O digital output module 18.

[0030] This system can accurately collect analog or digital signals from various sensors and equipment. These signals may include process parameters such as temperature, pressure, flow, liquid level, and the switch status of the equipment. By collecting these data in real time, enterprises can understand the production status more accurately and provide a basis for subsequent decision-making;

[0031] The collected data is transmitted to the control system or data processing center through a high-speed bus or network, realizing real-time data sharing and centralized management. This data transmission method greatly improves the efficiency and accuracy of data processing.

[0032] The benefits of the present invention are that the technical solution of the present invention transmits data and control signals through wireless or wired networks, which reduces the use of cables and reduces cable costs; remote monitoring and control functions can be achieved through remote control, reducing the number of on-site monitoring equipment, thereby saving equipment investment.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A universal language bus interface remote I / O module system, characterized in that: It includes analog modules and digital modules for collecting analog signals or digital signals from various sensors and devices, as well as a power supply. The analog signal includes an analog input system, an I / O analog output system, and a Modbus network module for transmitting data through a communication network to a control center for processing and control. The digital module includes a digital input system, a digital output system, and a Modbus network module for transmitting data through a communication network to a control center for processing and control.

2. The universal language bus interface remote I / O module system according to claim 1, characterized in that: The analog input system includes an IO analog input and output module for receiving analog signals, a signal amplification circuit module for amplifying transmission signals, an A / D conversion circuit module for converting analog signal data, and an analog signal input microcontroller for receiving and transmitting analog signals.

3. The universal language bus interface remote I / O module system according to claim 2, characterized in that: The analog signal input single chip microcomputer is also connected to an optical coupler isolation module.

4. The universal language bus interface remote I / O module system according to claim 1, characterized in that: The I / O analog output system includes an analog output microcontroller for receiving data from the analog input system, a D / A conversion module for converting common mode into analog quantity, an analog output signal amplification module for amplifying the analog signal converted by the D / A conversion module, and an I / O analog output module for outputting the analog signal to a control system or a data processing center.

5. The universal language bus interface remote I / O module system according to claim 1, characterized in that: The digital quantity input system comprises an IO digital quantity input module for receiving digital signals, a digital quantity input single chip microcomputer for receiving digital quantity data and sending digital quantity data, and a digital quantity optical coupling isolation module for protecting the transmission of the digital quantity input single chip microcomputer.

6. The universal language bus interface remote I / O module system according to claim 1, characterized in that: The digital output system includes a digital output microcontroller for receiving digital data transmitted by an IO digital input module in a Modbus network, a digital output optocoupler isolation module for protecting the digital output microcontroller transmission, and an I / O digital output module for outputting digital data to a control system or a data processing center.

7. The method for using a universal language bus interface remote I / O module system according to claims 1-6, characterized in that: The IO analog input and output module transmits the signal to the signal amplification circuit module, and the differential mode is converted into common mode through the analog-to-digital conversion A / D conversion circuit module as the input of the analog-to-digital conversion chip MAX1270. After the analog-to-digital conversion is completed, it is transmitted to the analog signal input microcontroller through the optical coupler. The analog signal input microcontroller receives the digital data and sends it to the Modbus network module. At the same time, the optical coupler is isolated and protected to realize analog conversion input; in the analog output, the Modbus network module transmits data and transmits the signal to the analog output microcontroller through the optical coupler. After the D / A conversion module digital-analog core After the MAX525 is converted into analog quantity, it is amplified by the analog output signal amplifier module LM348 and then output by the analog output module; the IO digital input module transmits the received signal to the digital optical coupling isolation module and the digital input microcontroller, and the digital input microcontroller receives the digital analog data and sends it to the data transceiver on the Modbus network, and at the same time, the optical coupling isolation protection is provided; in the digital output, the Modbus network writes data to transmit the signal to the digital output microcontroller, and after passing through the digital output optical coupling isolation module, it is output by the I / O digital output module.

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