CN211604295U - Acquisition module of RS485 interface sensor - Google Patents
Acquisition module of RS485 interface sensor Download PDFInfo
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- CN211604295U CN211604295U CN201922470636.3U CN201922470636U CN211604295U CN 211604295 U CN211604295 U CN 211604295U CN 201922470636 U CN201922470636 U CN 201922470636U CN 211604295 U CN211604295 U CN 211604295U
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Abstract
The utility model relates to a collection module of RS485 interface sensor belongs to the industrial communication engineering field, is applied to structure safety health monitoring trade. The device comprises a communication module, a multi-serial-port microcontroller module, an isolated RS485 driver module, an interface protection module, a power management module, an isolated power module, a current sampling monitoring module, a data storage module, a power shunt module and an RS485 bus driver; the patent of the utility model provides a solve unable remote monitoring running state of RS485 network device in the present trade, unable online upgrade, unable self-diagnosis scheduling problem, realized RS485 network device's intellectuality, improved reliability and convenience that work RS485 field system is integrated to and low maintenance cost, the ability of quick location trouble.
Description
Technical Field
The utility model relates to a collection module of RS485 interface sensor belongs to the industrial communication engineering field, is applied to structure safety health monitoring trade.
Background
The prior art is as follows: at present, an RS485 type sensor data acquisition device is being applied to various industrial fields on a large scale as industrial bus network equipment. The RS485 type sensor data acquisition unit mainly optimizes the network structure of an RS485 bus and improves the interface isolation type, thereby improving the reliability of the whole network. The reliability of the RS485 type sensor data collector plays an important role in the stability and reliability of the whole system. If a certain RS485 type sensor data collector in the network breaks down, the data of the sensor mounted on the data collector cannot be read, and serious consequences are caused. At present, the RS485 type sensor data acquisition unit is mostly a single-machine system, namely, a module which is an independent function exists, if the module is only responsible for logic control, transceiving control, channel expansion and the like of a communication interface, real-time monitoring on the running state and faults of the module cannot be carried out, when the module is abnormal, remote restarting or resetting cannot be carried out, system running firmware cannot be upgraded remotely, and module function expansion and integration are not facilitated. Therefore, as a key network communication module in the industrial field, the reliability of hardware is far from ensuring the reliable operation and maintenance of the whole system. The fault operation state of the current RS485 type sensor data acquisition unit can only observe the operation state of the module on site through a state operation indicator lamp configured on the module, personnel is required to reach the site for fault troubleshooting, and the labor cost and the time for solving the fault are indirectly increased.
SUMMERY OF THE UTILITY MODEL
The utility model is directed to foretell problem, the unable remote monitoring of purpose in order to solve present RS485 type sensor data collection station and control module, when breaking down, can't implement the place and the time that obtain the trouble and take place, need personnel to arrive the problem that the on-the-spot investigation could fix a position.
The utility model discloses a realize above-mentioned purpose, adopt following technical scheme:
an acquisition module of an RS485 interface sensor comprises a communication module, a multi-serial-port microcontroller module, an isolated RS485 driver module, an interface protection module, a power management module, an isolated power module, a current sampling monitoring module, a data storage module, a power shunt module and an RS485 bus driver;
the multi-serial-port microcontroller module is respectively connected with the communication module, the current sampling monitoring module, the isolated RS485 driver module, the data storage module and the RS485 bus driver;
the communication module is connected with the power supply management module, and the power supply management module is respectively connected with the current sampling monitoring module and the isolation power supply module;
the isolation power supply module is connected with the power supply shunt module, the power supply shunt module is connected with the isolation type RS485 driver module, and the isolation type RS485 driver module is connected with the interface protection module.
Further, the RS485 network host is connected with the RS485 type sensor through an RS485 cloud intelligent acquisition module;
the cloud monitoring platform communicates with the RS485 cloud intelligent acquisition module through the communication module.
Further, the cloud monitoring platform is connected with the RS485 cloud intelligent acquisition module through the communication base station.
Furthermore, the multi-serial-port microcontroller comprises 5 serial ports, wherein 1 serial port is used as a main serial port for communicating with the RS485 bus, namely, the RS485 bus driver is connected, and the other 4 serial ports are used as extension communication interfaces and connected with an external isolation type RS485 driver module.
The acquisition method of the acquisition module comprises the following steps:
the communication module is communicated with the multi-serial-port microcontroller through a CMOS level serial port, the working state of the RS485 cloud intelligent acquisition module is sent to the monitoring platform, and meanwhile, a control command, a diagnostic information query command and a system upgrading command are actively sent by the monitoring platform to remotely monitor and control the RS485 cloud intelligent acquisition module;
the multi-serial-port microcontroller module is provided with a plurality of serial-port microcontrollers, and the multi-serial-port microcontroller has the advantages that the system can be flexibly upgraded and configured, and protocol conversion is carried out on RS485 interface sensors of different protocol types mounted on the RS485 cloud intelligent acquisition module, so that communication protocols are unified, protocol conflicts are reduced, and the reliability of a network is indirectly improved;
the isolation type RS485 driver module adopts an integrated isolation module;
the interface protection module is used for anti-surge protection of an RS485 interface and an external power supply interface, wherein the RS485 signal is a differential signal and adopts differential anti-surge protection, the external power supply adopts single-ended anti-surge protection, the anti-surge protection of the two interfaces adopts a secondary protection circuit, the first stage adopts a TVS tube in the second stage after GDT passes through a decoupling device;
the power supply management module is responsible for providing energy for the communication module, the multi-serial port MCU, the isolation power supply and the analog circuit and converting an externally provided primary power supply into a secondary power supply required by the system;
the isolation power supply module externally provides power for the RS485 type sensor;
the current sampling monitoring module monitors the current consumption condition of an external RS485 type sensor load in real time, and when an abnormality occurs, the RS485 cloud intelligent acquisition module can perform data conversion through an analog-to-digital converter inside the current sampling monitoring module, recognize the data through the microcontroller, convert the data into a fault diagnosis message and send the fault diagnosis message to the communication module;
the data storage module sends data measured by the RS485 type sensor to the RS485 bus, and the RS485 cloud intelligent acquisition module also performs synchronous backup so as to avoid that under extreme conditions, the RS485 cloud intelligent acquisition module can automatically acquire data at regular time according to a fault-tolerant mechanism configured by a system, temporarily replaces the action of an RS485 network host, sends the data in the data storage module to the host on the RS485 bus one by one after the RS485 bus is recovered to be normal, and simultaneously reports the abnormal fault of the RS485 bus to the cloud monitoring platform;
the power supply shunting module is used for dividing the power supply provided by the isolation power supply module into multiple paths and providing the multiple paths to the external RS485 type sensor, and each path adopts an independent self-recovery fuse and a sampling resistor, so that when an external circuit fails, the power supply of other circuits cannot be influenced by the failed circuit, and meanwhile, the method can also reduce the power supply module and reduce the cost and the volume;
the RS485 bus driver is responsible for driving an RS485 signal at the RS485 bus side, and mainly receives a command from the RS485 network host and is responsible for returning a data packet of the collected RS485 type sensor;
the RS485 network host is mainly responsible for sending data acquisition command frames and receiving data packets returned by the sensors;
the cloud monitoring platform is mainly used for collecting the diagnostic information reported by the RS485 cloud intelligent acquisition module and the running state parameters of the RS485 cloud intelligent acquisition module in real time, and meanwhile, when the RS485 cloud intelligent acquisition module needs function upgrading, the upgrading firmware is issued through the cloud monitoring platform, OTA (over the air) aerial remote online upgrading is realized, and the intelligence of the RS485 cloud intelligent acquisition module is realized.
The communication module adopts a built-in real-time clock type and is set to be in a state of timing work and timing dormancy, so that the power consumption of the system is reduced to the maximum extent.
The utility model has the advantages that:
the utility model discloses a solve in the present trade unable remote monitoring running state of RS485 network equipment (like RS485 concentrator), unable online upgrade, unable self-diagnosis scheduling problem, realized RS485 network equipment's intellectuality, improved the integrated reliability and the convenience of work RS485 field system to and low maintenance cost, the ability of quick location trouble.
Drawings
FIG. 1 is a block diagram of the module connection of the present invention;
fig. 2 is a schematic diagram of the networking of the present invention;
fig. 3 is the utility model discloses whole monitored control system network deployment picture.
Detailed Description
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.
An acquisition module of an RS485 interface sensor comprises a communication module 1, a multi-serial-port microcontroller module 2, an isolated RS485 driver module 3, an interface protection module 4, a power management module 5, an isolated power module 6, a current sampling monitoring module 7, a data storage module 8, a power shunt module 9 and an RS485 bus driver 10;
the multi-serial-port microcontroller module 2 is respectively connected with the communication module 1, the current sampling monitoring module 7, the isolation type RS485 driver module 3, the data storage module 8 and the RS485 bus driver 10;
the communication module 1 is connected with a power supply management module 5, and the power supply management module 5 is respectively connected with a current sampling monitoring module 7 and an isolation power supply module 6;
the isolation power supply module 6 is connected with the power supply shunt module 9, the power supply shunt module 9 is connected with the isolation type RS485 driver module 3, and the isolation type RS485 driver module 3 is connected with the interface protection module 4.
The RS485 network host 13 is connected with the RS485 type sensor 12 through an RS485 cloud intelligent acquisition module 11;
the cloud monitoring platform 15 communicates with the RS485 cloud intelligent acquisition module 11 through the communication module 1.
The cloud monitoring platform 15 is connected with the RS485 cloud intelligent acquisition module 11 through the communication base station 14.
The multi-serial-port microcontroller 2 comprises 5 serial ports, wherein 1 serial port is used as a main serial port for communicating with the RS485 bus, namely, the RS485 bus driver 10 is connected, and the other 4 serial ports are used as expansion communication interfaces and connected with the external isolation type RS485 driver module 3.
The acquisition method of the acquisition module of the RS485 interface sensor comprises the following steps:
the communication module 1 is communicated with the multi-serial-port microcontroller through a CMOS level serial port, the working state of the RS485 cloud intelligent acquisition module is sent to the monitoring platform, and meanwhile, a control command, a diagnostic information query command and a system upgrading command are actively sent by the monitoring platform to remotely monitor and control the RS485 cloud intelligent acquisition module;
the multi-serial-port microcontroller module 2 is provided with a plurality of serial-port microcontrollers, and the multi-serial-port microcontroller has the advantages that the system can be flexibly upgraded and configured, and protocol conversion is carried out on RS485 interface sensors of different protocol types mounted on the RS485 cloud intelligent acquisition module, so that communication protocols are unified, protocol conflicts are reduced, and the reliability of a network is indirectly improved;
the isolation type RS485 driver module 3 adopts an integrated isolation module;
the interface protection module 4 is used for anti-surge protection of an RS485 interface and an external power supply interface, wherein the RS485 signal is a differential signal and adopts differential anti-surge protection, the external power supply adopts single-ended anti-surge protection, the two interfaces adopt two-stage protection circuits for anti-surge protection, the first stage adopts a TVS tube in the second stage after GDT passes through a decoupling device;
the power management module 5 is responsible for providing energy for the communication module, the multi-serial port MCU, the isolation power supply and the analog circuit, and converting an externally provided primary power supply into a secondary power supply required by the system;
the isolation power supply module 6 externally provides power for the RS485 type sensor;
the current sampling monitoring module 7 monitors the current consumption condition of the external RS485 type sensor load in real time, and when an abnormality occurs, the RS485 cloud intelligent acquisition module can perform data conversion through an analog-to-digital converter inside the current sampling monitoring module, recognize the data through a microcontroller, convert the data into a fault diagnosis message and send the fault diagnosis message to the communication module;
the data storage module 8 sends data measured by the RS485 type sensor to the RS485 bus, and the RS485 cloud intelligent acquisition module 11 also performs synchronous backup, so that the RS485 cloud intelligent acquisition module can automatically acquire data at regular time according to a fault-tolerant mechanism configured by a system under extreme conditions, temporarily replaces the function of the RS485 network host 13, sends the data in the data storage module to the host on the RS485 bus one by one after the RS485 bus is recovered to be normal, and simultaneously reports the abnormal fault of the RS485 bus to the cloud monitoring platform;
the power supply shunting module 9 is used for dividing the power supply provided by the isolation power supply module 6 into multiple paths and providing the multiple paths to an external RS485 type sensor, and each path adopts an independent self-recovery fuse and a sampling resistor, so that when an external circuit fails, the power supply of other circuits cannot be influenced by the failed circuit, and meanwhile, the method can also reduce the power supply modules and reduce the cost and the volume;
the RS485 bus driver 10 is responsible for driving an RS485 signal at the RS485 bus side, and mainly receives a command from the RS485 network host 13 and is responsible for returning a data packet of the collected RS485 type sensor;
the RS485 network host 13 is mainly responsible for sending data acquisition command frames and receiving data packets returned by the sensors;
the cloud monitoring platform 15 is mainly used for collecting the diagnostic information reported by the RS485 cloud intelligent acquisition module and the operating state parameters of the RS485 cloud intelligent acquisition module in real time, and meanwhile, when the RS485 cloud intelligent acquisition module needs function upgrading, upgrading firmware is issued through the cloud monitoring platform, OTA (over the air) aerial remote online upgrading is achieved, and the RS485 cloud intelligent acquisition module is intelligent.
The communication module 1 adopts a built-in real-time clock type and is set to be in a state of timing work and timing dormancy, so that the system power consumption is reduced to the maximum extent.
The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by replacing or changing the technical solution and the improvement concept of the present invention with equivalents and modifications within the technical scope of the present invention.
Claims (4)
1. The utility model provides an acquisition module of RS485 interface sensor which characterized in that: the system comprises a communication module (1), a multi-serial-port microcontroller module (2), an isolated RS485 driver module (3), an interface protection module (4), a power management module (5), an isolated power module (6), a current sampling monitoring module (7), a data storage module (8), a power shunt module (9) and an RS485 bus driver (10);
the multi-serial-port microcontroller module (2) is respectively connected with the communication module (1), the current sampling monitoring module (7), the isolation type RS485 driver module (3), the data storage module (8) and the RS485 bus driver (10);
the communication module (1) is connected with a power supply management module (5), and the power supply management module (5) is respectively connected with a current sampling monitoring module (7) and an isolation power supply module (6);
the isolation power supply module (6) is connected with the power shunt module (9), the power shunt module (9) is connected with the isolation type RS485 driver module (3), and the isolation type RS485 driver module (3) is connected with the interface protection module (4).
2. The acquisition module of the RS485 interface sensor of claim 1, wherein: the RS485 network host (13) is connected with the RS485 type sensor (12) through an RS485 cloud intelligent acquisition module (11);
the cloud monitoring platform (15) communicates the RS485 cloud intelligent acquisition module (11) through the communication module (1).
3. The acquisition module of the RS485 interface sensor of claim 2, wherein: the cloud monitoring platform (15) is connected with the RS485 cloud intelligent acquisition module (11) through the communication base station (14).
4. The acquisition module of the RS485 interface sensor of claim 1, wherein: the multi-serial-port microcontroller module (2) comprises 5 serial ports, wherein 1 serial port is used as a main serial port for communicating with the RS485 bus, namely, the RS485 bus driver (10) is connected, and the other 4 serial ports are used as extension communication interfaces and connected with an external isolation type RS485 driver module (3).
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| CN201922470636.3U CN211604295U (en) | 2019-12-31 | 2019-12-31 | Acquisition module of RS485 interface sensor |
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| CN201922470636.3U CN211604295U (en) | 2019-12-31 | 2019-12-31 | Acquisition module of RS485 interface sensor |
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