CN107679002B - Main control circuit of data caching type communication device - Google Patents
Main control circuit of data caching type communication device Download PDFInfo
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- CN107679002B CN107679002B CN201711200469.XA CN201711200469A CN107679002B CN 107679002 B CN107679002 B CN 107679002B CN 201711200469 A CN201711200469 A CN 201711200469A CN 107679002 B CN107679002 B CN 107679002B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4004—Coupling between buses
- G06F13/4027—Coupling between buses using bus bridges
- G06F13/405—Coupling between buses using bus bridges where the bridge performs a synchronising function
- G06F13/4059—Coupling between buses using bus bridges where the bridge performs a synchronising function where the synchronisation uses buffers, e.g. for speed matching between buses
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/568—Storing data temporarily at an intermediate stage, e.g. caching
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Abstract
The invention discloses a data cache type communication device, which comprises a main control circuit, wherein the main control circuit is connected with a communication interface circuit, a data cache circuit and a USB interface, and the communication device is externally connected with a 3G/4G communication module through the USB interface to realize data exchange with a cloud server; the communication device exchanges data with an external industrial control equipment main controller through a communication interface circuit; the data transmitted to the communication device by the cloud server and the industrial control equipment main controller are converted into data packets by the main control circuit through a self-adaptive dictionary compression method and cached in the data cache circuit, so that the capacity of the data packets is effectively compressed, and meanwhile, the data loss caused by the fact that the communication device and the cloud server are disconnected can be avoided, and the data transmission of the data cache type communication device is more reliable.
Description
Technical Field
The present invention relates to a control circuit of a communication device, and more particularly, to a main control circuit of a data buffer type communication device.
Background
Along with the popularization of the application of current big data, more and more industrial control field data transmission is in the internet, but the master controller in many industrial control fields self does not usually carry the communication function, will pass through master controller control communication module and upload data to the high in the clouds server on, however, industrial control communication module's operational environment is generally comparatively abominable, communication module and high in the clouds server communication ability are weak, the off-line phenomenon often can appear, can take place the data loss, the condition that can't upload.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the control circuit of the data cache type communication device, which has high reliability, strong practicability and simple circuit structure.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a master control circuit of a data cache type communication device comprises a control circuit, wherein the control circuit is connected with a communication interface circuit, a data cache circuit and a USB interface, and the master control circuit is externally connected with a communication module through the USB interface to realize data exchange with a cloud server; the main control circuit exchanges data with an external industrial control device main controller through the communication interface circuit, and data transmitted to the main control circuit by the cloud server and the industrial control device main controller are converted into data packets by the control circuit and cached in the data cache circuit.
The model of the memory chip used by the data cache circuit is W25N01 GVZEIG.
The control circuit comprises a main control chip U1A and a main control chip U1B, wherein the chip models of the main control chip U1A and the main control chip U1B are V3S.
The communication interface circuit comprises an RS485 interface circuit; the RS485 interface circuit comprises an RS485 chip U4, a common mode inductor L4, a capacitor C15, a bidirectional voltage regulator tube ZD4, a bidirectional voltage regulator tube ZD5, a resistor R9, a resistor R10, a resistor R11 and a connector J6; the pin 1 and the pin 4 of the RS485 chip U4 are respectively connected with the pin 40 and the pin 39 of the main control chip U1B; pins 2 and 3 of the RS485 chip U4 are connected with pins 41 of the main control chip U1B; the 5 pins of the RS485 chip U4 are grounded; 8 pins of the RS485 chip U4 are grounded through the capacitor C15, and 5V voltage is connected to the node of 5 pins of the RS485 chip U4 and the capacitor C15; the 6 pins of the RS485 chip U4 are divided into two paths, one path is grounded through the resistor R11, and the other path is connected with the 1 pin of the common-mode inductor L4; the 7 pins of the RS485 chip U4 are divided into two paths, one path is grounded through the resistor R10, and the other path is connected with the 3 pins of the common-mode inductor L4; the pin 1 and the pin 2 of the common mode inductor L4 are respectively connected with the pin 1 and the pin 2 of the connector J6; one end of the resistor R9 is connected with the node of the resistor R10 and the 3 pins of the common mode inductor L4, and the other end is connected with the node of the resistor R11 and the 1 pin of the common mode inductor L4; one end of the bidirectional voltage regulator tube ZD4 is connected with the node of the resistor R11 and the 1 pin of the common mode inductor L4, and the other end is grounded; one end of the bidirectional voltage regulator tube ZD5 is connected with the node of the resistor R10 and the 3 pins of the common mode inductor L4, and the other end is grounded.
The communication interface circuit comprises an RS232 interface circuit; the RS232 interface circuit comprises an RS232 chip U3, a bidirectional voltage regulator tube ZD1, a bidirectional voltage regulator tube ZD2, a bidirectional voltage regulator tube ZD3, a diode D1, a resistor R8, a capacitor C10, a capacitor C11, a capacitor C12, a capacitor C13 and a capacitor C14; the pin 1 of the RS232 chip U3 is connected with the pin 3 of the RS232 chip U3 through the capacitor C10; the 4 pins of the RS232 chip U3 are connected with the 5 pins of the RS232 chip U3 through the capacitor C11; the 2 pins of the RS232 chip U3 are connected with the 15 pins of the RS232 chip U3 through the capacitor C13; the 6 pins of the RS232 chip U3 are connected with the 15 pins of the RS232 chip U3 through the capacitor C14; the 16 pins of the RS232 chip U3 are divided into two paths, one path is connected with 5V voltage, and the other path is connected with the 15 pins of the RS232 chip U3 through the capacitor C12; a pin 9 of the RS232 chip U3 is connected with a cathode of the diode D1, an anode of the diode D1 is divided into two paths, one path is connected with 5V voltage through the resistor R8, and the other path is connected with a pin 8 of the main control chip U1A; the 10 pins of the RS232 chip U3 are connected with the 9 pins of the main control chip U1A; the 7 pins of the RS232 chip U3 are grounded through the bidirectional voltage regulator tube ZD 3; the 8 pins of the RS232 chip U3 are grounded through the bidirectional voltage regulator tube ZD 1; one end of the bidirectional voltage regulator tube ZD2 is connected with a node of 8 pins of the bidirectional voltage regulator tube ZD1 and an RS232 chip U3, and the other end of the bidirectional voltage regulator tube ZD3 is connected with a node of 7 pins of the RS232 chip U3; pins 11, 12, 13 and 14 of the RS232 chip U3 are suspended.
The invention has the beneficial effects that: the cloud server control circuit comprises a control circuit, wherein the control circuit is connected with a communication interface circuit, a data cache circuit and a USB interface, and a main control circuit is externally connected with a communication module through the USB interface to realize data exchange with a cloud server; the main control circuit exchanges data with an external industrial control equipment main controller through the communication interface circuit; the RS485 chip U4 and the RS232 chip U3 of communication interface circuit inside cooperate with internal configuration circuit, can the filtering outside industrial control equipment's signal interference, reinforcing control circuit's reliability, data cache formula communication device's master control circuit can carry out data interchange with industrial control equipment master controller with different transmission rate through communication interface circuit, can carry out data transmission according to the different distance selection interface modes between with industrial control equipment master controller, reinforcing control circuit's practicality. .
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic block diagram of the circuit of the present invention;
FIG. 2 is a first portion of a circuit schematic of the present invention;
FIG. 3 is a second portion of the circuit schematic of the present invention;
FIG. 4 is a third portion of the circuit schematic of the present invention;
FIG. 5 is a fourth portion of the circuit schematic of the present invention;
FIG. 6 is a fifth portion of the circuit schematic of the present invention;
fig. 7 is a sixth portion of the circuit schematic of the present invention.
Detailed Description
Referring to fig. 1 to 7, a main control circuit of a data caching type communication device includes a control circuit, the control circuit is connected with a communication interface circuit, a data caching circuit and a USB interface, and the main control circuit is externally connected with a communication module through the USB interface to implement data exchange with a cloud server; the main control circuit exchanges data with an external industrial control device main controller through the communication interface circuit, and data transmitted to the main control circuit by the cloud server and the industrial control device main controller are converted into data packets by the control circuit and cached in the data cache circuit; the data cache circuit stores or extracts the data packet in a first-in first-out management mode, and the type of a storage chip used by the data cache circuit is W25N01 GVZEIG.
The data caching type communication device receives and transmits data in an asynchronous data processing mode; when the industrial control equipment main controller transmits sending data to the communication device, the control circuit packs the transmission data into data packets according to time intervals, then stores the data packets in a cache region of the data cache circuit according to a first-in first-out data management mode, simultaneously detects whether the cache region contains the data packets from the cloud server, and extracts and sends the data packets sent by the cloud server to the industrial control equipment main controller if the data packets exist; on the other hand, the data cache type communication device constantly detects communication with the cloud server, when connection with the cloud server is established and data are transmitted, the data packets are copied from the cache region according to a first-in first-out data management mode, the data packets are uploaded to the cloud server, then the cloud server is accessed to confirm the receiving state of the data packets, the copied data packets are deleted after confirmation is completed, and the data packets from the cloud server are stored in the cache region of the data cache circuit after the data packets are received by the main control circuit.
The control circuit comprises a main control chip U1A and a main control chip U1B, wherein the chip models of the main control chip U1A and the main control chip U1B are V3S. The communication interface circuit comprises an RS485 interface circuit; the RS485 interface circuit comprises an RS485 chip U4, a common mode inductor L4, a capacitor C15, a bidirectional voltage regulator tube ZD4, a bidirectional voltage regulator tube ZD5, a resistor R9, a resistor R10, a resistor R11 and a connector J6; the pin 1 and the pin 4 of the RS485 chip U4 are respectively connected with the pin 40 and the pin 39 of the main control chip U1B; pins 2 and 3 of the RS485 chip U4 are connected with pins 41 of the main control chip U1B; the 5 pins of the RS485 chip U4 are grounded; 8 pins of the RS485 chip U4 are grounded through the capacitor C15, and 5V voltage is connected to the node of 5 pins of the RS485 chip U4 and the capacitor C15; the 6 pins of the RS485 chip U4 are divided into two paths, one path is grounded through the resistor R11, and the other path is connected with the 1 pin of the common-mode inductor L4; the 7 pins of the RS485 chip U4 are divided into two paths, one path is grounded through the resistor R10, and the other path is connected with the 3 pins of the common-mode inductor L4; the pin 1 and the pin 2 of the common mode inductor L4 are respectively connected with the pin 1 and the pin 2 of the connector J6; one end of the resistor R9 is connected with the node of the resistor R10 and the 3 pins of the common mode inductor L4, and the other end is connected with the node of the resistor R11 and the 1 pin of the common mode inductor L4; one end of the bidirectional voltage regulator tube ZD4 is connected with the node of the resistor R11 and the 1 pin of the common mode inductor L4, and the other end is grounded; one end of the bidirectional voltage regulator tube ZD5 is connected with the node of the resistor R10 and the 3 pins of the common mode inductor L4, and the other end is grounded. The communication interface circuit comprises an RS232 interface circuit; the RS232 interface circuit comprises an RS232 chip U3, a bidirectional voltage regulator tube ZD1, a bidirectional voltage regulator tube ZD2, a bidirectional voltage regulator tube ZD3, a diode D1, a resistor R8, a capacitor C10, a capacitor C11, a capacitor C12, a capacitor C13 and a capacitor C14; the pin 1 of the RS232 chip U3 is connected with the pin 3 of the RS232 chip U3 through the capacitor C10; the 4 pins of the RS232 chip U3 are connected with the 5 pins of the RS232 chip U3 through the capacitor C11; the 2 pins of the RS232 chip U3 are connected with the 15 pins of the RS232 chip U3 through the capacitor C13; the 6 pins of the RS232 chip U3 are connected with the 15 pins of the RS232 chip U3 through the capacitor C14; the 16 pins of the RS232 chip U3 are divided into two paths, one path is connected with 5V voltage, and the other path is connected with the 15 pins of the RS232 chip U3 through the capacitor C12; a pin 9 of the RS232 chip U3 is connected with a cathode of the diode D1, an anode of the diode D1 is divided into two paths, one path is connected with 5V voltage through the resistor R8, and the other path is connected with a pin 8 of the main control chip U1A; the 10 pins of the RS232 chip U3 are connected with the 9 pins of the main control chip U1A; the 7 pins of the RS232 chip U3 are grounded through the bidirectional voltage regulator tube ZD 3; the 8 pins of the RS232 chip U3 are grounded through the bidirectional voltage regulator tube ZD 1; one end of the bidirectional voltage regulator tube ZD2 is connected with a node of 8 pins of the bidirectional voltage regulator tube ZD1 and an RS232 chip U3, and the other end of the bidirectional voltage regulator tube ZD3 is connected with a node of 7 pins of the RS232 chip U3; pins 11, 12, 13 and 14 of the RS232 chip U3 are floating. The RS232 chip U3 adopts a chip model SP3232E, the RS485 chip U4 adopts a chip model SP485EEN, the capacitor C11, the capacitor C12, the capacitor C13 and the capacitor C15 are filter capacitors, the RS485 chip U4 and the RS232 chip U3 are matched to filter signal interference of external industrial control equipment, the transmission reliability of the data cache type communication device is enhanced, a main control circuit of the data cache type communication device can exchange data with an industrial control equipment main controller at different transmission rates through the communication interface circuit, an interface mode can be selected to carry out data transmission according to different distances between the main control circuit and the industrial control equipment main controller, the communication device is arranged on the surface of the industrial control equipment under the normal condition, when working environment signals of the industrial control equipment are weak, a transmission lead with proper length can be replaced, then the communication device is arranged in a service area with good signal environment to establish connection with a cloud server, the data buffer type communication device has good environmental adaptability.
The above embodiments do not limit the scope of the present invention, and those skilled in the art can make equivalent modifications and variations without departing from the overall concept of the present invention.
Claims (3)
1. A master control circuit of a data cache type communication device comprises a control circuit, and is characterized in that the control circuit is connected with a communication interface circuit, a data cache circuit and a USB interface, and the master control circuit is externally connected with a communication module through the USB interface to realize data exchange with a cloud server; the main control circuit exchanges data with an external industrial control device main controller through the communication interface circuit, and data transmitted to the main control circuit by the cloud server and the industrial control device main controller are converted into data packets by the control circuit and cached in the data cache circuit; the control circuit comprises a main control chip U1A and a main control chip U1B, wherein the chip models of the main control chip U1A and the main control chip U1B are V3S; the communication interface circuit comprises an RS485 interface circuit; the RS485 interface circuit comprises an RS485 chip U4, a common mode inductor L4, a capacitor C15, a bidirectional voltage regulator tube ZD4, a bidirectional voltage regulator tube ZD5, a resistor R9, a resistor R10, a resistor R11 and a connector J6; the pin 1 and the pin 4 of the RS485 chip U4 are respectively connected with the pin 40 and the pin 39 of the main control chip U1B; pins 2 and 3 of the RS485 chip U4 are connected with pins 41 of the main control chip U1B; the 5 pins of the RS485 chip U4 are grounded; 8 pins of the RS485 chip U4 are grounded through the capacitor C15, and 5V voltage is connected to the node of 5 pins of the RS485 chip U4 and the capacitor C15; the 6 pins of the RS485 chip U4 are divided into two paths, one path is grounded through the resistor R11, and the other path is connected with the 1 pin of the common-mode inductor L4; the 7 pins of the RS485 chip U4 are divided into two paths, one path is grounded through the resistor R10, and the other path is connected with the 3 pins of the common-mode inductor L4; the pin 1 and the pin 2 of the common mode inductor L4 are respectively connected with the pin 1 and the pin 2 of the connector J6; one end of the resistor R9 is connected with the node of the resistor R10 and the 3 pins of the common mode inductor L4, and the other end is connected with the node of the resistor R11 and the 1 pin of the common mode inductor L4; one end of the bidirectional voltage regulator tube ZD4 is connected with the node of the resistor R11 and the 1 pin of the common mode inductor L4, and the other end is grounded; one end of the bidirectional voltage regulator tube ZD5 is connected with the node of the resistor R10 and the 3 pins of the common mode inductor L4, and the other end is grounded.
2. The host circuit of claim 1, wherein the data cache circuit uses a memory chip of W25N01 GVZEIG.
3. The main control circuit of the data-buffered communication device as claimed in claim 1, wherein the communication interface circuit comprises an RS232 interface circuit; the RS232 interface circuit comprises an RS232 chip U3, a bidirectional voltage regulator tube ZD1, a bidirectional voltage regulator tube ZD2, a bidirectional voltage regulator tube ZD3, a diode D1, a resistor R8, a capacitor C10, a capacitor C11, a capacitor C12, a capacitor C13 and a capacitor C14; the pin 1 of the RS232 chip U3 is connected with the pin 3 of the RS232 chip U3 through the capacitor C10; the 4 pins of the RS232 chip U3 are connected with the 5 pins of the RS232 chip U3 through the capacitor C11; the 2 pins of the RS232 chip U3 are connected with the 15 pins of the RS232 chip U3 through the capacitor C13; the 6 pins of the RS232 chip U3 are connected with the 15 pins of the RS232 chip U3 through the capacitor C14; the 16 pins of the RS232 chip U3 are divided into two paths, one path is connected with 5V voltage, and the other path is connected with the 15 pins of the RS232 chip U3 through the capacitor C12; a pin 9 of the RS232 chip U3 is connected with a cathode of the diode D1, an anode of the diode D1 is divided into two paths, one path is connected with 5V voltage through the resistor R8, and the other path is connected with a pin 8 of the main control chip U1A; the 10 pins of the RS232 chip U3 are connected with the 9 pins of the main control chip U1A; the 7 pins of the RS232 chip U3 are grounded through the bidirectional voltage regulator tube ZD 3; the 8 pins of the RS232 chip U3 are grounded through the bidirectional voltage regulator tube ZD 1; one end of the bidirectional voltage regulator tube ZD2 is connected with a node of 8 pins of the bidirectional voltage regulator tube ZD1 and an RS232 chip U3, and the other end of the bidirectional voltage regulator tube ZD3 is connected with a node of 7 pins of the RS232 chip U3; pins 11, 12, 13 and 14 of the RS232 chip U3 are suspended.
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| CN201711200469.XA CN107679002B (en) | 2017-11-27 | 2017-11-27 | Main control circuit of data caching type communication device |
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| CN201711200469.XA CN107679002B (en) | 2017-11-27 | 2017-11-27 | Main control circuit of data caching type communication device |
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| CN107679002A CN107679002A (en) | 2018-02-09 |
| CN107679002B true CN107679002B (en) | 2020-04-10 |
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Address after: 528400 4th floor, building 1, Daling Industrial Zone, Torch Development Zone, Zhongshan City, Guangdong Province Patentee after: Guangdong ludes Environmental Technology Co.,Ltd. Address before: 528400 4th floor, building 1, Daling Industrial Zone, Torch Development Zone, Zhongshan City, Guangdong Province Patentee before: ZHONGSHAN LOTUSAIR Co.,Ltd. |