CN113791569A - Analog acquisition slave station system based on EtherCAT bus - Google Patents
Analog acquisition slave station system based on EtherCAT bus Download PDFInfo
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- CN113791569A CN113791569A CN202111358389.3A CN202111358389A CN113791569A CN 113791569 A CN113791569 A CN 113791569A CN 202111358389 A CN202111358389 A CN 202111358389A CN 113791569 A CN113791569 A CN 113791569A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
Abstract
The invention discloses an analog quantity acquisition slave station system based on an EtherCAT bus, which comprises: the system comprises an analog quantity acquisition module, a main controller module, a network communication module and a power supply module; the analog quantity acquisition module is used for acquiring 16 paths of analog quantity voltage signals of +/-10V; the main controller module and the analog quantity acquisition module perform data transmission through a 16-bit parallel bus; transmitting the voltage data signal to the network communication module through the SPI interface; the network communication module converts the voltage data signal into an EtherCAT bus data signal and exchanges data with a master station or a slave station controller on an EtherCAT bus network; the power supply module is used for providing power supply for the slave station system. The slave station system has the advantages of simple circuit, wide application range, low cost, high reliability and the like.
Description
Technical Field
The invention relates to an analog quantity acquisition system, in particular to an analog quantity acquisition slave station system based on an EtherCAT bus.
Background
In the field of industrial control, more and more factories are being automated and unmanned. A large number of automated control devices are required in these plants, and a large number of sensors are installed in these devices to detect displacement, pressure, temperature, and the like. The output signal of the above sensor is mostly an analog signal, and basically divided into two modes of voltage output and current output. In the current factory automation production line, a central controller performs centralized control and scheduling on the devices on the whole production line, and all the devices are used as slave station systems of the central controller and transmit various sensor data to the central controller through a bus network. Most slave station systems in the current market are supplied by foreign manufacturers, are high in price and high in maintenance cost, and have great influence on upgrading and modification of a production line. Meanwhile, in the field of robot control systems, a large number of force sensors are required to be configured in robot application, high requirements are provided for the volume weight and the power consumption of analog input acquisition slave station systems, and the conventional design at present is difficult to meet the requirements.
Disclosure of Invention
The invention aims to: aiming at the requirements of data exchange between the sensor output analog signals and a central controller by adopting a bus network in the field of industrial control and robot control systems, the analog quantity acquisition slave station system based on the EtherCAT bus network has the advantages of simple circuit, wide application range, low cost, high reliability and the like.
The technical scheme adopted by the invention is as follows:
an analog quantity acquisition slave station system based on an EtherCAT bus comprises: the analog quantity acquisition module 10, the main controller module 20, the network communication module 30 and the power supply module 40; the analog quantity acquisition module 10 is used for acquiring 16 paths of analog quantity voltage signals of +/-10V; the main controller module 20 and the analog quantity acquisition module 10 perform data transmission through a 16-bit parallel bus; and transmits the voltage data signal to the network communication module 30 through the SPI interface; the network communication module 30 converts the voltage data signal into an EtherCAT bus data signal, and exchanges data with a master station or a slave station controller on the EtherCAT bus network; the power supply module 40 is configured to provide power for the slave station system.
In another aspect of the present invention, the analog quantity acquisition module 10 includes a first connector XS1 and an analog-to-digital conversion chip U1; the first connector XS1 is connected with 16 paths of +/-10V analog quantity voltage signals to be acquired; the analog-to-digital conversion chip U1 is used to convert the collected analog voltage signal into a digital voltage signal, and simultaneously performs data transmission with the main controller module 20 through a 16-bit data bus.
In another scheme of the invention, the first connector XS1 has 32 pins in total, odd pins are connected with the collected 16 paths of analog quantity signals input at +/-10V, and even pins are connected with GND.
In another aspect of the present invention, the master controller module 20 includes a microcontroller U2; the microcontroller U2 is connected to the analog quantity acquisition module 10 through a 16-bit data bus and to the network communication module 30 through an SPI interface.
In another aspect of the present invention, the master controller module 20 further includes a configuration interface J1, the configuration interface J1 is used to program the microcontroller U2.
In another aspect of the present invention, the network communication module 30 includes a slave station controller U3, the slave station controller U3 being configured to convert voltage data signals received from the master controller module 20 into EtherCAT bus signals.
In another aspect of the present invention, the network communication module 30 further includes a memory chip U4, a network transformer chip U5 and U6, the memory chip U4 is used to store configuration information of the slave station controller U3, and the network transformer chip U5 and U6 are used to receive EtherCAT bus signals converted by the slave station controller U3 and exchange data with the master station/other slave stations in the network.
In another aspect of the present invention, the network communication module 30 further includes a second connector XS2 and a third connector XS3, and the second connector XS2 is an input interface of an EtherCAT bus; the third connector XS3 is an output interface of an EtherCAT bus.
In another aspect of the present invention, the power module 40 includes a power chip U7 and a power chip U8, and the power chip U7 converts an input 6V-26V power into + 5V; the power chip U8 converts the +5V voltage to + 3.3V.
In another embodiment of the present invention, the power module 40 further includes a fourth connector XS4, and the fourth connector XS4 is connected to an externally input 6V-26V power supply.
In summary, the invention provides a slave station system composed of an analog quantity acquisition module, a master controller module, a network communication module and a power supply module, aiming at the requirement of data exchange between the sensor output analog signals and a central controller by adopting a bus network in the field of industrial control, and has the following remarkable advantages:
1. the invention has simple circuit, less used components and small occupied space, and effectively reduces the occupied space of an industrial control system compared with the prior slave station system.
2. The EtherCAT bus network is adopted, the data transmission rate is high, the performance is reliable and stable, and large-scale system cascade can be carried out in various automatic production lines, robot control and environments needing real-time bus network data transmission.
3. The invention can simultaneously collect 16 paths of analog quantity signals output by +/-10V, and reduces the number of slave station system construction.
4. The slave station controller designed by the invention has the advantages that the cost of components is lower, the cost of the system is greatly reduced compared with the cost of the conventional product, and the cost of the whole system can be effectively reduced.
Drawings
FIG. 1 is a block diagram of a circuit implementation of the present invention;
FIG. 2 is a schematic diagram of an analog acquisition module of the present invention;
FIG. 3 is a schematic diagram of the main controller module of the present invention;
FIG. 4 is a schematic diagram of a network communication module of the present invention;
FIG. 5 is a schematic diagram of the power module of the present invention;
reference numerals: 10-analog quantity acquisition module, 20-main controller module, 30-network communication module and 40-power module.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, the present invention provides an analog quantity acquisition slave station system based on EtherCAT bus, including: the analog quantity acquisition module 10, the main controller module 20, the network communication module 30 and the power supply module 40; the analog quantity acquisition module 10 is used for acquiring 16 paths of analog quantity voltage signals of +/-10V; the main controller module 20 and the analog quantity acquisition module 10 perform data transmission through a 16-bit parallel bus; and transmits the voltage data signal to the network communication module 30 through the SPI interface; the network communication module 30 converts the voltage data signal into an EtherCAT bus data signal, and exchanges data with a master station or a slave station controller on the EtherCAT bus network; the power supply module 40 is configured to provide power for the slave station system.
As shown in fig. 2, specifically, the analog acquisition module 10 includes a first connector XS1, an analog-to-digital conversion chip U1, and first to ninth capacitors C1 to C9.
The first connector XS1 has 32 pins in total, 16 odd-numbered pins 1-31 are connected with 16 collected analog quantity voltage signals input at +/-10V, and 16 even-numbered pins 2-32 are connected with GND; the analog-to-digital conversion chip U1 is used to convert the input analog voltage signal into a digital voltage signal, and simultaneously performs data transmission with the main controller module 20 through the 16-bit data buses 41-48 and 53-60, and connects functional pins such as chip selection, hardware/software mode selection, sampling channel selection, reset and the like with control pins of the main controller module 20; the first to ninth capacitors C1-C9 are connected to power supply pins of the analog-to-digital conversion chip U1 for ensuring normal operation of the chip.
As shown in fig. 3, the main controller module 20 is specifically composed of a microcontroller U2, a first crystal oscillator Y1, tenth to twelfth capacitors C10 to C12, and a configuration interface J1.
The microcontroller U2 is connected with the analog quantity acquisition module 10 through a 16-bit data bus and is connected with the network communication module 30 through an SPI interface of pins 19-22; the first crystal oscillator Y1 is connected with the microcontroller U2 and is used for providing oscillation frequency required by work; the tenth capacitor C10 and the eleventh capacitor C11 are used for providing load capacitance for the normal operation of the first crystal oscillator Y1; interface J1 is configured to program microcontroller U2.
As shown in fig. 4, the network communication module 30 is specifically composed of a slave station controller U3 (in the figure, U3A and U3B are combined together as a schematic illustration of U3), a memory chip U4, network transformer chips U5 and U6, a second crystal oscillator Y2, first and second inductors L1 and L2, thirteenth to twentieth capacitors C13 to C20, first to sixteenth resistors R1 to R16, a second connector XS2, and a third connector XS 3.
The slave station controller U3 is used to decode the voltage data signal processed by the master controller module 20, convert it into EtherCAT bus signal and transmit it to the network transformer chip; the memory chip U4 is used to store configuration information of the slave station controller U3; the network transformer chips U5 and U6 are used for receiving EtherCAT bus signals converted by the slave station controller U3 and exchanging data with a master station/other slave stations in the EtherCAT network; the second crystal oscillator Y2 is used for providing the slave station controller U3 with the oscillation frequency required by the work; the first and second inductors L1 and L2 are used for filtering the +3.3V power supply; a thirteenth capacitor C13 and a sixteenth capacitor C16 are filter capacitors of a +3.3V power supply, a fourteenth capacitor, a fifteenth capacitor C14 and a C15 are load capacitors of a second crystal oscillator Y2 which normally works, and seventeenth to twentieth capacitors C17-C20 are filter capacitors of network transformer chips U5 and U6; the first to ninth resistors R1-R9 are signal current limiting resistors, the tenth and eleventh resistors R10 and R11 are IIC interface pull-up resistors of the memory chip U4, and the thirteenth to sixteenth resistors R13-R16 are filter resistors of the network transformer chips U5 and U6; the second connector XS2 is connected with the network transformer chip U5, is an input interface of an EtherCAT bus, and can receive data of other slave stations in the EtherCAT network; the third connector XS3 is connected with the network transformer chip U6, is an output interface of an EtherCAT bus, and can transmit data to a master station in the EtherCAT network.
As shown in fig. 5, the power module 40 is specifically composed of a power chip U7, a power chip U8, a first diode D1, a third inductor L3, twenty-first to twenty-eighth capacitors C21 to C28, seventeenth to nineteenth resistors R17 to R19, and a fourth connector XS 4.
The fourth connector XS4 is connected to an externally input 6-26V power supply. The power chip U7 converts the input 6V-26V power into + 5V; the power supply chip U8 converts the +5V voltage into + 3.3V; the first diode D1 is a protection diode of the input power supply; the third inductor L3 is the filter inductor of the +5V power supply; the twenty-first capacitor C21 is a driving capacitor of a power supply chip U7, the twenty-seventh capacitor C27 and the twenty-eighth capacitor C28 are filter capacitors of an input power supply, the twenty-second capacitor C22, the twenty-third capacitor C23 and the twenty-fifth capacitor C25 are filter capacitors of a +5V power supply, and the twenty-fourth capacitor C24 and the twenty-sixth capacitor C26 are filter capacitors of a +3.3V power supply; seventeenth to nineteenth resistors R17 to R19 are voltage output configuration resistors of the power supply chip U7.
The slave station system has the advantages of simple circuit, wide application range, low cost, high reliability and the like. The EtherCAT bus network is adopted, the data transmission rate is high, the performance is stable, and the EtherCAT bus network is very suitable for large-scale system cascade application in various automatic production lines, robot control and environments where real-time bus network data transmission is needed.
In the above embodiments, the specific circuit may be replaced according to actual requirements, and the specific circuit of the present application does not represent all embodiments of the technical solution of the present application.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (10)
1. An analog quantity acquisition slave station system based on an EtherCAT bus is characterized by comprising: the system comprises an analog quantity acquisition module (10), a main controller module (20), a network communication module (30) and a power supply module (40); wherein the content of the first and second substances,
the analog quantity acquisition module (10) is used for acquiring 16 paths of analog quantity voltage signals of +/-10V;
the main controller module (20) and the analog quantity acquisition module (10) carry out data transmission through a 16-bit parallel bus; and transmitting the voltage data signal to the network communication module (30) through the SPI interface;
the network communication module (30) converts the voltage data signal into an EtherCAT bus data signal and exchanges data with a master station or a slave station controller on an EtherCAT bus network;
the power supply module (40) is used for providing power supply for the slave station system.
2. The analog quantity collecting slave station system according to claim 1, wherein the analog quantity collecting module (10) comprises a first connector XS1 and an analog-to-digital conversion chip U1; the first connector XS1 is connected with 16 paths of +/-10V analog quantity voltage signals to be acquired; the analog-to-digital conversion chip U1 is used for converting the collected analog voltage signal into a digital voltage signal and simultaneously carrying out data transmission with the main controller module (20) through a 16-bit data bus.
3. The analog quantity collecting slave station system according to claim 2, wherein the first connector XS1 has 32 pins in total, odd pins are connected with collected 16 paths of analog quantity signals with +/-10V input, and even pins are connected with GND.
4. The analog-collecting slave station system of claim 1, wherein the master controller module (20) includes a microcontroller U2; the microcontroller U2 is connected with the analog quantity acquisition module (10) through a 16-bit data bus and connected with the network communication module (30) through an SPI interface.
5. The analog collecting slave station system of claim 4, wherein the master controller module (20) further comprises a configuration interface J1, the configuration interface J1 being used to program the microcontroller U2.
6. The analog-collecting slave station system of claim 1, wherein the network communication module (30) includes a slave station controller U3, the slave station controller U3 being adapted to convert voltage data signals received from the master controller module (20) into EtherCAT bus signals.
7. The analog quantity collecting slave station system as set forth in claim 6, wherein the network communication module (30) further comprises a memory chip U4, a network transformer chip U5 and U6, the memory chip U4 is used for storing configuration information of the slave station controller U3, and the network transformer chip U5 and U6 are used for receiving EtherCAT bus signals converted from the slave station controller U3 and exchanging data with master/other slave stations in the network.
8. The analog acquisition slave system according to claim 6, characterized in that the network communication module (30) further comprises a second connector XS2 and a third connector XS3, the second connector XS2 being an input interface of an EtherCAT bus; the third connector XS3 is an output interface of an EtherCAT bus.
9. The analog quantity collecting slave station system according to claim 1, wherein the power supply module (40) comprises a power supply chip U7 and a power supply chip U8, and the power supply chip U7 converts an input 6V-26V power supply into + 5V; the power chip U8 converts the +5V voltage to + 3.3V.
10. The analog collecting slave station system according to claim 9, wherein the power supply module (40) further comprises a fourth connector XS4, the fourth connector XS4 being connected to an externally input 6V-26V power supply.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111358389.3A CN113791569A (en) | 2021-11-17 | 2021-11-17 | Analog acquisition slave station system based on EtherCAT bus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111358389.3A CN113791569A (en) | 2021-11-17 | 2021-11-17 | Analog acquisition slave station system based on EtherCAT bus |
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| CN111290337A (en) * | 2020-04-28 | 2020-06-16 | 佛山市宏石激光技术有限公司 | Intelligent numerical control IO device based on EtherCAT bus |
| CN112099419A (en) * | 2020-10-24 | 2020-12-18 | 西安热工研究院有限公司 | DCS analog input acquisition AI fastener |
| CN112099418A (en) * | 2020-10-24 | 2020-12-18 | 西安热工研究院有限公司 | DCS switching value input detection clamping piece |
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2021
- 2021-11-17 CN CN202111358389.3A patent/CN113791569A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102346453A (en) * | 2011-07-22 | 2012-02-08 | 中环天仪股份有限公司 | Analog data collection module based on industrial Ethernet |
| US20140016289A1 (en) * | 2012-07-06 | 2014-01-16 | Cyntec Co., Ltd | Network communication device |
| CN107707447A (en) * | 2017-09-22 | 2018-02-16 | 中科新松有限公司 | A kind of slave station system and control method based on EtherCAT |
| CN107918325A (en) * | 2017-12-05 | 2018-04-17 | 中国电子信息产业集团有限公司第六研究所 | Multi-channel analog acquisition card |
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Application publication date: 20211214 |
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