CN110647121A - Transmitter signal acquisition and analysis system based on LORA - Google Patents
Transmitter signal acquisition and analysis system based on LORA Download PDFInfo
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- CN110647121A CN110647121A CN201910936820.4A CN201910936820A CN110647121A CN 110647121 A CN110647121 A CN 110647121A CN 201910936820 A CN201910936820 A CN 201910936820A CN 110647121 A CN110647121 A CN 110647121A
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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
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM]
- G05B19/4183—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM] characterised by data acquisition, e.g. workpiece identification
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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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
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/31—From computer integrated manufacturing till monitoring
- G05B2219/31282—Data acquisition, BDE MDE
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
A transmitter signal acquisition and analysis system based on an LORA comprises an LORA wireless acquisition module, an LORA communication base station and a data processing center, wherein the LORA wireless acquisition module acquires a monitoring signal generated by a transmitter arranged on target equipment and generates equipment monitoring information according to the monitoring signal, pre-stored identification information of the LORA wireless acquisition module and identification information of the transmitter; the LORA communication base station provides the received equipment monitoring information sent by each LORA wireless acquisition module for the data processing center, the data processing center converts the monitoring signals in the equipment monitoring information into output current values, obtains corresponding transmitter type data, range data and current output range values from a prestored transmitter information table according to the identification information of the transmitter in the equipment monitoring information, and calculates the running state data corresponding to the target equipment.
Description
Technical Field
The invention relates to the technical field of industrial Internet of things, in particular to a transmitter signal acquisition and analysis system based on LORA.
Background art:
safety, environmental protection, product quality are chemical industry enterprise's lifeline, and chemical plant equipment type is numerous, equipment quantity is huge, in case production facility breaks down and can lead to safety risk, environmental protection risk or product quality not up to standard.
The development of the internet of things technology enables the problems to be solved: the method comprises the steps of setting a corresponding transmitter on equipment to be monitored, collecting operation parameters of the equipment by using the transmitter, and transmitting collected operation parameter signals to a monitoring center for analysis so as to realize equipment monitoring in a factory.
However, because the number of devices in a factory is huge, and the transmitter models adopted by each device are different, a corresponding acquisition device needs to be configured to analyze the transmitter, so that the equipment cost during data acquisition is increased, and the acquisition process is complicated.
Disclosure of Invention
In view of the above, it is desirable to provide a transmitter signal acquisition and analysis system based on LORA.
A transmitter signal acquisition and analysis system based on an LORA comprises an LORA wireless acquisition module, an LORA communication base station and a data processing center, wherein the LORA wireless acquisition module is used for acquiring monitoring signals generated by a transmitter arranged on target equipment and generating equipment monitoring information according to the monitoring signals, prestored identification information of the LORA wireless acquisition module and identification information of the transmitter, and the LORA wireless acquisition module is also used for wirelessly transmitting the generated equipment monitoring information to the LORA communication base station; the LORA communication base station is used for receiving equipment monitoring information sent by each LORA wireless acquisition module and sending the equipment monitoring information to the data processing center, the data processing center is used for receiving the equipment monitoring information, converting monitoring signals in the equipment monitoring information into output current values, obtaining corresponding transmitter type data, range data and current output range values from a prestored transmitter information table according to identification information of a transmitter in the equipment monitoring information, and calculating running state data corresponding to target equipment according to the obtained corresponding transmitter type data, range data, current output range values and the converted output current values.
Preferably, the LORA wireless acquisition module comprises an explosion-proof accommodating device, an LORA communication and control unit, an RS485 signal conversion unit, an LORA wireless signal transceiving unit, a power supply unit and a first input/output unit, wherein the LORA communication and control unit, the RS485 signal conversion unit and the power supply unit are arranged in the explosion-proof accommodating device; the RS485 signal conversion unit is electrically connected with the first input/output unit, the first input/output unit penetrates out of a second explosion-proof clamping joint of the explosion-proof accommodating device to be connected with a transmitter arranged on target equipment, the monitoring signal generated by the transmitter is acquired and provided to the RS485 signal conversion unit by the first input/output unit, the monitoring signal is converted into a digital monitoring signal by the RS485 signal conversion unit and then provided to the LORA communication and control unit, and the LORA communication and control unit generates the equipment monitoring information according to the monitoring signal provided by the RS485 signal conversion unit, the pre-stored identification information of the LORA wireless acquisition module and the identification information of the transmitter; the LORA communication and control unit also controls the first input/output unit to output electric energy in a timing mode so as to supply power to the transmitter connected with the first input/output unit; the power supply unit supplies power for the LORA communication and control unit.
Preferably, the first input/output unit is an 8-core shielded cable, the AI1, AI2, AI3 and AI4 leads of the RS485 signal conversion unit are correspondingly connected with 1, 2, 3 and 4 cores in the 8-core shielded cable, the GND lead of the RS485 signal conversion unit is connected with the 8 th core of the 8-core shielded cable, and the free ends of the 1, 2, 3 and 4 cores in the 8-core shielded cable are used for being electrically connected with the transmitter; PWD, GND pin and the two core electric connection of 5 in the 8 core cables, 6 in the LORA communication and the control unit, the free end of the two cores of 5 in the 8 core cables, 6 is used for with changer electric connection to the realization is to the power supply of changer.
Preferably, the RS485 signal conversion unit receives the analog monitoring signal provided by the transmitter and transmitted by the first input/output unit, and generates a corresponding digital monitoring signal according to the received analog monitoring signal.
Preferably, the data processing center comprises a second input/output unit, an analysis unit, a transmitter unit range calculation unit, a target device operation parameter calculation unit and an operation state data generation unit; the second input/output unit is used for receiving equipment monitoring information; the analysis unit is used for analyzing the equipment monitoring information so as to obtain a monitoring signal and identification information of the transmitter from the equipment monitoring information; the transmitter unit range calculation unit acquires prestored range data and current output range values of the corresponding transmitters according to the analyzed identification information of the transmitters, and calculates the transmitter unit range values according to the acquired current output range values of the corresponding transmitters; the target equipment operation parameter calculation unit calculates a corresponding target equipment operation parameter value according to the analyzed monitoring signal, the range data of the transmitter and the unit range value of the transmitter; and the running state data generating unit generates the running state data according to the running parameter value of the target equipment and the identification information of the transmitter.
Preferably, the second input/output unit further sends the generated operating state data to a receiving device corresponding to the address information according to pre-stored address information.
Preferably, the second input/output unit further compares the generated operation state data with a pre-stored alarm threshold, generates alarm information when the operation state data is compared to match the pre-stored alarm threshold, and sends the generated alarm information to the receiving device corresponding to the address information according to the pre-stored address information.
In the transmitter signal acquisition and analysis system based on the LORA, the LORA wireless acquisition module acquires a monitoring signal generated by a transmitter arranged on target equipment, generates equipment monitoring information according to the monitoring signal, prestored identification information of the LORA wireless acquisition module and the identification information of the transmitter, sends the equipment monitoring information sent by each LORA wireless acquisition module to a data processing center through an LORA communication base station, the data processing center receives each piece of equipment monitoring information, converts the monitoring signal in the equipment monitoring information into an output current value, obtains corresponding transmitter type data, range data and a current output range value from a prestored transmitter information table according to the identification information of the transmitter in the equipment monitoring information, and calculates running state data corresponding to the target equipment according to the obtained corresponding transmitter type data, range data, current output range value and the converted output current value, therefore, monitoring signals generated by the transmitters are transmitted to the data processing center in a centralized mode for analysis, and each transmitter does not need to be matched with one device for analysis, so that the equipment cost is reduced, and the complexity of the acquisition process is reduced.
Drawings
FIG. 1 is a schematic diagram of an application of a LORA-based transmitter signal acquisition and analysis system according to a preferred embodiment.
Fig. 2 is a schematic diagram of a functional module of the LORA wireless acquisition module in fig. 1.
Fig. 3 is a schematic diagram of a functional unit of the data processing center in fig. 1.
In the figure: the LORA-based transmitter signal acquisition and analysis system comprises a LORA-based transmitter signal acquisition and analysis system 10, a LORA wireless acquisition module 20, an explosion-proof accommodating device 21, a LORA communication and control unit 22, an RS485 signal conversion unit 23, a LORA wireless signal transceiver unit 24, a power supply unit 25, a first input/output unit 26, a LORA communication base station 30, a data processing center 40, a second input/output unit 41, an analysis unit 42, a transmitter unit range calculation unit 43, a target device operation parameter calculation unit 44 and an operation state data generation unit 45.
Detailed Description
The LORA wireless acquisition module is arranged at an equipment end needing to be monitored, the LORA wireless acquisition module directly acquires analog quantity signals of the transmitter, converts AI analog quantity signals into digital signals and then generates equipment monitoring information, and transmits the equipment monitoring information to the LORA communication base station, the LORA communication base station is internally provided with a 4G internet of things card, data are uploaded to a data processing center through the 4G network, the equipment monitoring information is stored and analyzed in the data processing center, early warning is carried out according to a set warning threshold value, and data are checked through a PC end computer or a mobile phone end.
The following describes the above-mentioned transducer signal acquisition and analysis system based on LORA in detail, please refer to fig. 1 at the same time, the transducer signal acquisition and analysis system 10 based on LORA includes a wireless acquisition module 20 of LORA, a communication base station 30 of LORA, a data processing center 40, the wireless acquisition module 20 of LORA is used for acquiring monitoring signals generated by a transducer installed on a target device, and generating device monitoring information according to the monitoring signals, pre-stored identification information of the wireless acquisition module of LORA and identification information of the transducer, the wireless acquisition module 20 of LORA is further used for sending the generated device monitoring information to the communication base station 30 of LORA in a wireless manner; the LORA communication base station 30 is configured to receive device monitoring information sent by each LORA wireless acquisition module 20, and send the device monitoring information to the data processing center 40, the data processing center 40 is configured to receive the device monitoring information, convert a monitoring signal in the device monitoring information into an output current value, obtain corresponding transmitter type data, range data, and a current output range value from a prestored transmitter information table according to identification information of a transmitter in the device monitoring information, and calculate operating state data corresponding to a target device according to the obtained corresponding transmitter type data, range data, current output range value, and the converted output current value.
Please refer to fig. 2, wherein the LORA wireless acquisition module 20 includes an explosion-proof storage device 21, and an LORA communication and control unit 22, an RS485 signal conversion unit 23, an LORA wireless signal transceiver unit 24, a power supply unit 25, and a first input/output unit 26 disposed inside the explosion-proof storage device 21, the LORA communication and control unit 22 is electrically connected to the LORA wireless signal transceiver unit 24, the first input/output unit 26, the RS485 signal conversion unit 23, and the power supply unit 25, and an output end of the ORA wireless signal transceiver unit 24 penetrates out of a first explosion-proof clamping joint of the explosion-proof storage device 21 to transmit device monitoring information; the RS485 signal conversion unit 23 is also electrically connected with the first input/output unit 26, the first input/output unit 26 also penetrates out of the second explosion-proof clamping joint of the explosion-proof accommodating device 21 to be connected with a transmitter arranged on target equipment, the first input/output unit 26 acquires a monitoring signal generated by the transmitter to be provided for the RS485 signal conversion unit 23, the RS485 signal conversion unit 23 converts the monitoring signal into a digital monitoring signal and provides the digital monitoring signal to the LORA communication and control unit 22, and the LORA communication and control unit 22 generates the equipment monitoring information according to the monitoring signal provided by the RS485 signal conversion unit 23, the pre-stored identification information of the LORA wireless acquisition module and the identification information of the transmitter; the LORA communication and control unit 22 also controls the first input/output unit 26 to output power in a timed manner to supply power to the transmitter connected to the first input/output unit 26; the power supply unit 25 supplies power to the LORA communication and control unit.
In this embodiment, the first input/output unit 26 is an 8-core shielded cable, the AI1, AI2, AI3 and AI4 leads of the RS485 signal conversion unit 23 are correspondingly connected with 1, 2, 3 and 4 cores of the 8-core shielded cable, the GND lead of the RS485 signal conversion unit 23 is connected with the 8 th core of the 8-core shielded cable, and the free ends of the 1, 2, 3 and 4 cores of the 8-core shielded cable are used for electrically connecting with the transmitter; the PWD and GND pins of the LORA communication and control unit 22 are electrically connected with the 5 core and the 6 core of the 8-core cable, and the free ends of the 5 core and the 6 core of the 8-core cable are electrically connected with the transmitter to realize power supply of the transmitter. The RS485 signal conversion unit 23 receives the analog monitoring signal provided by the transmitter and transmitted by the first input/output unit 26, and generates a corresponding digital monitoring signal according to the received analog monitoring signal.
The data processing center 40 may be a cloud server running a set of computer applications, wherein the computer applications are used to complete the running state data calculation function. After running the computer application, the data processing center 40 generates the following functional units, please refer to fig. 3 at the same time: a second input/output unit 41, an analysis unit 42, a transmitter unit range calculation unit 43, a target device operation parameter calculation unit 44, and an operation state data generation unit 45; the second input/output unit 41 is used for receiving device monitoring information; the analyzing unit 42 is configured to analyze the device monitoring information to obtain a digital monitoring signal and identification information of the transmitter from the device monitoring information; the transmitter unit range calculation unit 43 obtains prestored range data and current output range values of the corresponding transmitters according to the analyzed identification information of the transmitters, and calculates the transmitter unit range value according to the obtained corresponding transmitter current output range values; the target equipment operation parameter calculation unit 44 calculates a corresponding target equipment operation parameter value according to the analyzed monitoring signal, the range data of the transmitter and the unit range value of the transmitter; the operation state data generation unit 45 generates the operation state data according to the target device operation parameter value and the identification information of the transmitter.
The following describes, by way of example, a process of generating the operating state data by the second input/output unit 41, the parsing unit 42, the transmitter unit range calculating unit 43, the target device operating parameter calculating unit 44, and the operating state data generating unit 45, please refer to table 1:
TABLE 1
| 01 | 03 | 10 | 2C F2 45 B3 00 00 45 7A 00 00 45 7A 00 00 45 7A | 18 3C |
| Slave device address | Function code | Data length | Data of | CRC check code |
Table 1 shows a device monitoring information table, where the digital monitoring signal analyzed by the analyzing unit 42 in the device monitoring information is "2C F245B 30000457A 0000457 a 0000457 a", and is a four-way analog AI signal received by AI1, AI2, AI3, and AI4 of the RS485 signal conversion unit 23, where 2C F245B 3 corresponds to a signal value of AI1, a first 0000457 a corresponds to AI2, a second 0000457 a corresponds to AI3, and a fourth 0000457 a corresponds to AI 4; the signal values adopt hexadecimal systems, the transmitter unit range calculation unit 43 converts the signal values into floating point numbers, 2C F245B 3 is inverted front and back to obtain 45B 32C F2, a floating point number conversion tool (IEEE-754 standard) of the transmitter unit range calculation unit 43 converts 45B 32C F2 to obtain a floating point number 5733.618 which is a current value, and the transmitter unit range calculation unit 43 divides the 5733.618 current value by 1000 to obtain a result 5.7336 which is a current milliampere; the unit measuring range calculating unit 43 of the transmitter obtains the prestored measuring range data of the corresponding transmitter to be 200 ℃ and the current output range value to be 4-20 mA, wherein the transmitter which is transmitted to an AI1 lead of the RS485 signal conversion unit 23 is a temperature sensor, and the current output range value of the transmitter is 4-20 mA, so that 4 needs to be subtracted from the unit measuring range calculating unit 43 of the transmitter, namely, 5.7336-4 is used for obtaining a current value of 1.7336mA, namely, the AI1 analog current value is 1.7336mA, and finally, the current output range value is 4mA after conversion and calculation by the method; the range of the transmitter is 0-200 ℃, 4-20 mA current signals are output, 16 current signals are arranged in the middle of 4-20 mA at intervals, and a unit range calculation unit 43 of the transmitter divides 16 signals by 200 to obtain a unit range value of the transmitter, namely 12.5 ℃/grid; the target device operation parameter calculation unit 44 multiplies the AI1 analog current value generated by the transmitter unit range calculation unit 43 to 1.7336mA and the transmitter unit range value to 12.5 ℃/grid to obtain a target device operation parameter value of 21.67 ℃; the operation state data generation unit 45 generates the operation state data 21.67 deg.c from the target device operation parameter value 21.67 deg.c and identification information of the transmitter (temperature sensor unit is (° c)).
Further, the second input/output unit 41 further sends the generated operating state data to a receiving device corresponding to the address information according to pre-stored address information; the second input/output unit 41 further compares the generated operation state data with a pre-stored alarm threshold, generates alarm information when the operation state data is compared to match the pre-stored alarm threshold, and sends the generated alarm information to a receiving device corresponding to the address information according to the pre-stored address information. For example, the receiving device may be a PC-end computer or a mobile phone end, and of course, the user may actively access the data processing center 40 through the receiving device to view the generated operating status data.
The transmitter signal acquisition and analysis system based on the LORA meets the requirements of a chemical plant area on safety and explosion prevention, and has feasibility of landing implementation; the transmitter has strong universality, and can realize wireless acquisition, transmission and analysis no matter what equipment, brand, type and model, as long as the transmitter outputs a standard 4-20 mA current signal, thereby reducing the workload of communicating with a third party and analyzing a third party RS485 protocol; the flexibility is strong, only need install the wireless collection module of LORA additional at equipment end and dock with the changer, through the range and the data unit of software configuration changer, can satisfy different enterprise's individualized monitoring and early warning demand through this system.
Claims (7)
1. The utility model provides a changer signal acquisition analytic system based on LORA which characterized in that: the system comprises an LORA wireless acquisition module, an LORA communication base station and a data processing center, wherein the LORA wireless acquisition module is used for acquiring monitoring signals generated by a transmitter arranged on target equipment and generating equipment monitoring information according to the monitoring signals, prestored identification information of the LORA wireless acquisition module and identification information of the transmitter, and the LORA wireless acquisition module is also used for sending the generated equipment monitoring information to the LORA communication base station in a wireless mode; the LORA communication base station is used for receiving equipment monitoring information sent by each LORA wireless acquisition module and sending the equipment monitoring information to the data processing center, the data processing center is used for receiving the equipment monitoring information, converting monitoring signals in the equipment monitoring information into output current values, obtaining corresponding transmitter type data, range data and current output range values from a prestored transmitter information table according to identification information of a transmitter in the equipment monitoring information, and calculating running state data corresponding to target equipment according to the obtained corresponding transmitter type data, range data, current output range values and the converted output current values.
2. The LORA-based transmitter signal acquisition and interpretation system of claim 1, wherein: the LORA wireless acquisition module comprises an explosion-proof accommodating device, an LORA communication and control unit, an RS485 signal conversion unit, an LORA wireless signal receiving and transmitting unit, a power supply unit and a first input/output unit, wherein the LORA communication and control unit is arranged in the explosion-proof accommodating device and is electrically connected with the LORA wireless signal receiving and transmitting unit, the first input/output unit, the RS485 signal conversion unit and the power supply unit; the RS485 signal conversion unit is electrically connected with the first input/output unit, the first input/output unit penetrates out of a second explosion-proof clamping joint of the explosion-proof accommodating device to be connected with a transmitter arranged on target equipment, the monitoring signal generated by the transmitter is acquired and provided to the RS485 signal conversion unit by the first input/output unit, the monitoring signal is converted into a digital monitoring signal by the RS485 signal conversion unit and then provided to the LORA communication and control unit, and the LORA communication and control unit generates the equipment monitoring information according to the monitoring signal provided by the RS485 signal conversion unit, the pre-stored identification information of the LORA wireless acquisition module and the identification information of the transmitter; the LORA communication and control unit also controls the first input/output unit to output electric energy in a timing mode so as to supply power to the transmitter connected with the first input/output unit; the power supply unit supplies power for the LORA communication and control unit.
3. The LORA-based transmitter signal acquisition and interpretation system of claim 2, wherein: the first input and output unit is an 8-core shielding cable, leading wires of AI1, AI2, AI3 and AI4 of the RS485 signal conversion unit are correspondingly connected with 1, 2, 3 and 4 cores in the 8-core shielding cable, a GND leading wire of the RS485 signal conversion unit is connected with the 8 th core of the 8-core shielding cable, and free ends of the 1, 2, 3 and 4 cores in the 8-core shielding cable are used for being electrically connected with the transmitter; PWD, GND pin and the two core electric connection of 5 in the 8 core cables, 6 in the LORA communication and the control unit, the free end of the two cores of 5 in the 8 core cables, 6 is used for with changer electric connection to the realization is to the power supply of changer.
4. The LORA-based transmitter signal acquisition and interpretation system of claim 3, wherein: the RS485 signal conversion unit receives the analog monitoring signal transmitted by the first input/output unit and provided by the transmitter, and generates a corresponding digital monitoring signal according to the received analog monitoring signal.
5. The LORA-based transmitter signal acquisition and interpretation system of claim 1 or claim 2, wherein: the data processing center comprises a second input/output unit, an analysis unit, a transmitter unit range calculation unit, a target equipment operation parameter calculation unit and an operation state data generation unit; the second input/output unit is used for receiving equipment monitoring information; the analysis unit is used for analyzing the equipment monitoring information so as to obtain a monitoring signal and identification information of the transmitter from the equipment monitoring information; the transmitter unit range calculation unit acquires prestored range data and current output range values of the corresponding transmitters according to the analyzed identification information of the transmitters, and calculates the transmitter unit range values according to the acquired current output range values of the corresponding transmitters; the target equipment operation parameter calculation unit calculates a corresponding target equipment operation parameter value according to the analyzed monitoring signal, the range data of the transmitter and the unit range value of the transmitter; and the running state data generating unit generates the running state data according to the running parameter value of the target equipment and the identification information of the transmitter.
6. The LORA-based transmitter signal acquisition and interpretation system of claim 5, wherein: the second input and output unit also sends the generated running state data to a receiving device corresponding to the address information according to the prestored address information.
7. The LORA-based transmitter signal acquisition and interpretation system of claim 6, wherein: the second input and output unit also compares the generated running state data with a pre-stored alarm threshold value, generates alarm information when the running state data is matched with the pre-stored alarm threshold value, and sends the generated alarm information to a receiving device corresponding to the address information according to the pre-stored address information.
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